Abd el satar abd el kareim (original) (raw)

Papers by Abd el satar abd el kareim

Journal of Plant Protection and Pathology, 2009

The present study was conducted Aga district El-Dakhlia governorate, throughout 2006 and 2007cott... more The present study was conducted Aga district El-Dakhlia governorate, throughout 2006 and 2007cotton seasons. During the course of this study, three strains (I, II and III strains) of entomopathogenic bacteria belonging to Bacillus thurengeinsis Berl. were isolated from the pink (PBW), Pectinophora. gossypiella (Saund.), spiny (SBW), Earias. insulana (Boisd.) and American (ABW), Helicoverpa. armigera (Hub.) bollworms. In addition, two bacterial pathogens namely, (Streptomyces avermecti and Micrococcus sp.) were isolated from the previously bollworm larvae. The pathogenicity of each pathogen suspension was evaluated under laboratory conditions against the fourth larval instars of ABW, SBW and PBW. Statistical analysis indicated that B. thurigiensis strains (especially strain I) induced the highest pathogenicity to ABW, SBW and PBW larvae, while S. avermecti ranked second in the order of activity. Micrococcus sp. induced the lowest pathogenicity. The efficiency of the local strain (I) of B. thurigiensis in comparison with the commercial isolate (Agerin) was evaluated under field conditions. The In the first season (2006), the mean reduction percentages of infestation caused by PBW, SBW and ABW were 61.8, 65.5 and 74.2% in cotton fields treated with the local isolate (B. thurengeinsis strain I), while, the mean reduction percentages of infestation in Agerin treatment were 48. 5, 56.9 and 66.1%, respectively in comparison with control. In the second season (2007), the mean reduction percentages of infestation were 60.4, 55.6 & 63.5% for local isolate of B. thurigiensis and 47.7, 46.0 & 52.4 % for Agerin treatment, respectively.

J. Agric. Sci. Mansoura Univ., 34 (10):, 2009, 2009

The present study was conducted Aga district El-Dakhlia governorate, throughout 2006 and 2007cott... more The present study was conducted Aga district El-Dakhlia governorate, throughout 2006 and 2007cotton seasons. During the course of this study, three strains (I, II and III strains) of entomopathogenic bacteria belonging to Bacillus thurengeinsis Berl. were isolated from the pink (PBW), Pectinophora. gossypiella (Saund.), spiny (SBW), Earias. insulana (Boisd.) and American (ABW), Helicoverpa. armigera (Hub.) bollworms. In addition, two bacterial pathogens namely, (Streptomyces avermecti and Micrococcus sp.) were isolated from the previously bollworm larvae. The pathogenicity of each pathogen suspension was evaluated under laboratory conditions against the fourth larval instars of ABW, SBW and PBW. Statistical analysis indicated that B. thurigiensis strains (especially strain I) induced the highest pathogenicity to ABW, SBW and PBW larvae, while S. avermecti ranked second in the order of activity. Micrococcus sp. induced the lowest pathogenicity. The efficiency of the local strain (I) of B. thurigiensis in comparison with the commercial isolate (Agerin) was evaluated under field conditions. The In the first season (2006), the mean reduction percentages of infestation caused by PBW, SBW and ABW were 61.8, 65.5 and 74.2% in cotton fields treated with the local isolate (B. thurengeinsis strain I), while, the mean reduction percentages of infestation in Agerin treatment were 48. 5, 56.9 and 66.1%, respectively in comparison with control. In the second season (2007), the mean reduction percentages of infestation were 60.4, 55.6 & 63.5% for local isolate of B. thurigiensis and 47.7, 46.0 & 52.4 % for Agerin treatment, respectively.

Journal of Plant Protection and Pathology, 2007

A survey of the hymenopterus parasitoids, associated with, the larvae of sugar cane corn borer, S... more A survey of the hymenopterus parasitoids, associated with, the larvae of sugar cane corn borer, Sesamia cretica Led., in Sakha Agriculatural Research Station Farm at Kafr El-Sheikh Governorate during the two successive seasons 2004 and 2005. Four parasitoids species belonging to the Order and Family (Hymenoptera: Braconidae), were recorded. These parasitoids namely: Meterous sp, Apanteles sp, Cotesia sp and Gleptoapantelas africanus Haliday., as internal lavrval parasitoids of S. cretica. The highest percentages of parasitism by Meterous sp, was recorded on the first week of July (23.6%) during 2004 season, while in the second season 2005 was recorded in the third week of July (24.8%) with an average percentage of parasitism 11.54 and 14.37% during the two successive seasons, respectively. The highest percentages of parasitism by Apanteles sp, was recorded on the second week of August (33.3%) in the first season and the first week of July (28.8%) in the second season. On the other hand the average percentage of parasitism was 13.79 and 19.16% during the two seasons 2004 and 2005, respectively. The highest percentages of parasitism by Cotesia sp. was recorded in the first week of August which reached 30.0 and 31.1% in season 2004 and 2005, respectively. While the average percentage of parasitism were 19.13 and 13.9% in the two seasons, respectively. Regarding to the parasitoid, G. africanus which considers as first record in Egypt as larvae parasitoid on S. cretica, The highest percentages of parasitism were recorded in the second and third week on July (17.7 and 18.0%) during 2004 and 2005 seasons, respectively. On the other hand, the average percentages of parasitism were 4.31 and 4.69% respectively.

Journal of Plant Protection and Pathology, 2013

The relative attractiveness of some olfactory stimulant materials to the oriental hornet wasp, Ve... more The relative attractiveness of some olfactory stimulant materials to the oriental hornet wasp, Vespa orientalis L. was evaluated under laboratory and field conditions. Olfactory stimulant materials included some volatile oils (cinnamon, bananas, camphor and mint) and other natural materials (yeast, chicken litter, asber fermented grapes and sugar syrup as control). The obtained results revealed that the oriental wasp exhibited different degrees of selectivity in response to the tested olfactory stimulant materials. V.orientalis adults exposed to different volatile oils showed the highest attractiveness to cinnamon followed by camphor and mint oils with significant differences. The wasps exhibited the lowest preferability to bananas. The present study indicated that the oriental hornet wasp exhibited significantly positive response to asber fermented grape and chicken litter in comparison with yeast and sugar syrup. So, asber fermented grape and chicken litter successfully attracted the wasp; these materials can be used in monitoring populations of Vespa orientalis. Traps baited with cinnamon oil proved to be good bio control agent against the oriental wasps as they strongly attractive to them. The oriental wasps, V. orientalis population was considerably decreased in treated apiary in comparison with untreated one. Therefore, cinnamon oil could be used against the oriental wasps in IPM programs.

Journal of Plant Protection and Pathology, 2013

The present study was conducted at Kafr El-Sheikh governorate, Sakha district, throughout the pea... more The present study was conducted at Kafr El-Sheikh governorate, Sakha district, throughout the peak of the oriental wasp, Vespa orientalis L. during seasons of 2011 and 2012. The efficacies of a modified Abou El-Enain traps with different height (0.6, o.85, 1.15 and 1.50 m) and new trap desin, wooden shish window traps were evaluated in an apiary and date palm orchard. The obtained results revealed that shish window trap significantly attracted more numerous hornet wasps than those captured by using all heights of modified Abou El-Enain trap. The oriental wasp, V.orientalis population was relatively higher in the second season than those captured in the first one. On the other hand, the weekly average number of the hornet fluctuated all over the experimental period in the apiary and date palm orchard. Relatively higher numbers of the honey bee, Apis mellifera were caught in the modified Abou El-Enian trap, especially at 0.6 m. On the contrary, no catches of honey bee were recorded using wooden shishwindow trap in both seasons.

Lebenstafeln des idiobiotischen Ektoparasitoiden Aphytis diaspidis und seiner beiden Wirte Hemibe... more Lebenstafeln des idiobiotischen Ektoparasitoiden Aphytis diaspidis und seiner beiden Wirte Hemiberlesia lataniae und Quadraspidiotus perniciosus wurden unter Zuhilfenahme der Entwicklungszeit, der altersspezifischen Überlebensrate sowie der Fekundität der Weibchen bei 19 ± 2 °C, 60 ± 10 % rF und 10h:14h L:D konstruiert. Obwohl die beiden Wirtsarten keine dramatischen Unterschiede in den Populationswachstumsparametern (intrinsische (rm) und finite (λ) Zuwachsrate) aufweisen, scheint Q. perniciosus günstiger für die Zucht von A. diaspidis zu sein, da sie eine höhere Netto- (R0) und Bruttoreproduktionsrate (GRR) sowie eine längere Generationsdauer (T) hat. Entsprechend kann sich der Parasitoid in Q. perniciosus-Populationen rascher vermehren als in H. lataniae-Populationen. Die hohe Überlebensrate von A. diaspidis in der frühen Reproduktionsphase und die kurze Generationsdauer tragen signifikant zum Populationswachstum bei und lassen die intrinsische Zuwachsrate (rm) ihrer Wirte um das...

Journal of Applied Entomology, 1988

Fenoxycarb, hydroprene, kinoprene and methoprene have been sprayed on Epidiaspis leperii and its ... more Fenoxycarb, hydroprene, kinoprene and methoprene have been sprayed on Epidiaspis leperii and its ectoparasitoid, Aphytis mytilaspidis. These juvenoids (JHAs) were applied at the time of the peak in larval migration of E. leperii and when the second generation of A. mytilaspidis larvae were overwintering on E. leperii females.

Journal of Applied Entomology, 1994

ABSTRACT While Insegar and the sulfenylated carbamate juvenoid NKI-43049 totally inhibited the eg... more ABSTRACT While Insegar and the sulfenylated carbamate juvenoid NKI-43049 totally inhibited the egg production of Carulaspis juniperi (Hom., Diaspididae), only approximately 1% of the Applaud or NKI-35120 treated females laid eggs. Applaud and the sulfinylated carbamate derivative NKI-35120 resulted a very low egg-production (16% and 4% of the untreated control, respectively). Importantly, the tested fenoxycarb-related compounds did not reduce the rate of parasitization caused by Aphytis mytilaspidis (Hym., Aphelinidae), Applaud, however, had a moderately adverse effect on it.NKI-35120 gave an excellent result at a concentration of 0.1 a.i.% on Lepidosaphes beckii (Hom., Diaspididae). Insegar (0.1 a.i. %) and Applaud (0.05 a.i%) had good activity as well. Males were more sensitive than females for the treatments. NKI-35120 and Insegar strongly reduced the egg production of the females. The treatments did not reduce significantly the rate of parasitization caused by Aphytis lepidosaphes (Hym., Aphelinidae).NKI-35120 and Insegar at a concentration of 0.025 a.i. % strongly affected Ceroplastes japonicus (Hom., Coccidae) development since none of the treated larvae could develop to female. Surprisingly, Applaud had only moderate affectivity on C. japonicus.

Entomologia Experimentalis et Applicata, 1988

The sex pheromone of Epidiaspis leperii Sign, females was extracted by immersing virgin females i... more The sex pheromone of Epidiaspis leperii Sign, females was extracted by immersing virgin females in five different solvents. Chloroform showed to be the best solvent. Bioassay in the field was carried out by using plastic cup traps baited with chloroform and acetone extracts. Chloroform extracts lured the highest number of E. leperii males as well as the red pear scale ectoparasite Aphytis mytilaspidis (Le Baron). Chloroform extracts became inactive after one day. The plastic cup trap was very effective for collecting the wingless males.

Acta Phytopathologica et Entomologica Hungarica, 2013

ABSTRACT

Journal of Plant Protection and Pathology

Gray mold is a serious rot in postharvest tomato fruits caused by the fungal pathogen Botrytis ci... more Gray mold is a serious rot in postharvest tomato fruits caused by the fungal pathogen Botrytis cinerea. Botrytis is the most prevalent postharvest fungi that cause major losses in fresh fruits, vegetables, and ornamentals as well as can infect more than 500 plant species. This investigation was designed to evaluate the effect of Trichoderma culture filtrate on the fungal pathogen in vitro and in vivo conditions. The culture filtrate significantly reduced B. cinerea growth by 94.6, and 73.7% at concentrations of 70, and 60%, respectively. Moreover, the culture filtrate of T. reesei at 70% concentration caused an enormous reduction in incidence and severity of the disease by 80.5, and 90.5% in comparison with the untreated group respectively. The secondary metabolites of several species of Trichoderma had great antifungal activity on the pathogen B. cinerea, thereby might be a promising and eco-friendly strategy for controlling gray mold in tomatoes and various postharvest fruits and vegetables.

Journal of Plant Protection and Pathology

The present investigation was carried out at Aga district (El-Dakhalia Governorate) during 2005/2... more The present investigation was carried out at Aga district (El-Dakhalia Governorate) during 2005/2006 and 2006/2007 seasons to evaluate the seasonal activity of the ectoparasitoids; Exeristes roborator (F.) and Parasierola sp. on the diapausing pink bollworm (PBW), Pectinophora gossypiella (Saunders) larvae. Studies on the factors causing mortality among the diapausing pink bollworm. P. gossypiella larvae indicated that E. roborator (Fam., Ichneumonidae) and Parasierola sp. (Fam., Bethylidae) were mainly observed associated with the (PBW) larvae. The total mortality fluctuated considerably from one month to another during diapausing period. The key factor analysis suggested that E. roborator exhibited a positive density-dependent responses. However, Key-values of E. roborator were more correlated with the host density than the other mortality factors. On the contrary, the parasitoid Parasierola sp. showed no density dependent response. Predatism by the predacious mites and natural mortality are in most cases able to cause high percentage of mortality at all host population level, but no densitydependent responses to increase host populations have been recorded.

Journal of Union of Arab Biologists Cairo A Zoology, Dec 13, 2002

Journal of Plant Protection and Pathology, 2007

Field studies were conducted at the Experimental Research Station, Faculty of Agriculture, Mansou... more Field studies were conducted at the Experimental Research Station, Faculty of Agriculture, Mansoura University, to determine if Matricaria chamomilla is a beneficial insectary plant. The relative attractiveness of insect predators (aphidophagous) and their preys (aphids) to M. chamomilla were evaluated throughout two successive seasons (2005/206 and 2006/2007). The obtained results indicated that M. chamomilla was visited by several insect predators. A total of ten species of aphidophagous were collected. Although species varied somewhat among the two seasons, the most common aphidophagous species in sweep net were belonging to four families namely Coccinellidae, Syrphidae, Staphelinidae and Chrysopidae. Attractiveness of insect predators to M. chamomilla differed by dates and seasons. Chamomile flowers appear to be strongly attractive to aphidophagous species of hoverflies and the coccinellid, Coccinella undecimpunctata L. To test the hypothesis that regulation of aphid population would be improved by providing floral resources (M. chamomilla) for adult natural enemies, an experimental field plots each containing a central bed of pea plants Pisum satavium. A set of plots encircled either by chamomile plants or no forbs. Aphidophagous were more abundant in pea plots encircled by chamomile plants compared to those having no floral plants. Densities of aphid were typically lower in plots containing floral resource plants than in plots without them. On the other hand, the percentage of parasitism was significantly higher on aphid population within plots surrounded with chamomile plants than those without floral resource. These results suggest that M. chamomilla is an insectary plant with facultative mutualist predator-parasitoid visitors.

Journal of Plant Protection and Pathology, 2021

The study was carried out in a greenhouse at Plant Pathology Research Institute, "Agricultural Re... more The study was carried out in a greenhouse at Plant Pathology Research Institute, "Agricultural Research Center, Giza, Egypt" to evaluate bio-char applications of potato scab controlling caused by Streptomyces scabies in sandy and clayey textured soil. Water dressing of potting soils was discussed with the influence of bio-char application to both kinds of infested and non-infested soils. The results showed that the application of bio-char for potato seed bed and the regular irrigation (every 3 days) caused an increase in organic carbon in both sterilized soils. While, the bio-char application in state under seedbed for infested sandy soil caused low nitrogen content at both watering treatments. In this preliminary study similar results were shown in clayey infested soil. Which soil porosity that is being inversely related to disease and it is positively correlated to soil bulk density (bd). Also, the results showed that bio-char application decreased the interspaces between particles consequentially minimizing soil bulk density for watering treatments in concern. The soil reaction (pH) was increased with the application of bio-char to infested soil under both watering system. Biochar amended sandy and clayey soils expressed decreased incidence of scabby tubers especially at higher dose regular watering. This preliminary study reveals that the necessity of bio-char field treatments, to explain in depth the physiological, histological and changes in soil edaphic factors as related to Streptomyces scabies infections.

Journal of Plant Protection and Pathology, 2010

Investigations of life and fertility tables of San Jose Scale (SJS), Quadraspidiotus perniciosus ... more Investigations of life and fertility tables of San Jose Scale (SJS), Quadraspidiotus perniciosus Comstock were conducted to study some of its biological aspects on different host plants (apple, plum and pear). The stage duration, mortality percentage, the net reproductive rate and the intrinsic rate of natural increase were examined. The developmental periods were significantly affected by host plant. The mean duration of the first instar nymph on apple, plum and pear seedlings were 15.8±1.0, 17.5±0.9 and 18.2±0.9 days, respectively. The 2 nd instar female lasted by 18.4±1.5, 19.5±1.8 and 21.7±1.2 days; while the 2 nd instar male lased 12.2±0.6, 13.4±0.5 and 14.1±0.7 days, respectively. The duration of prepupal and pupal stages reared on apple, plum and pear seedlings lasted 7.5±0.9, 6.3±1.2 and 6.5±0.8 days, respectively. The stage specific mortality of life table data indicated that the death factors operated mainly during first and second instar nymph. The fertility of Q. perniciosus females was relatively high on pear followed by plum and apple. The net reproductive rate was 21.7, 29.5 and 30.9 females/ female on apple, plum and pear, respectively. The intrinsic rate of increase (rm) was 0.043, 0.049 and 0.051 females/ female/ day, respectively. In the same order, the time of generation was 71.7, 69.4 and 67.7 days, respectively.

Journal of Plant Protection and Pathology, 2010

The population dynamics of Quadraspidiotus perniciosus Comstock was studied on three host plants ... more The population dynamics of Quadraspidiotus perniciosus Comstock was studied on three host plants (apple, plum and pear). It proved that host plant was an important factor. Changes in the developmental period from settling crawlers to newly adult female ranged 28.4-34.8 days on apple , 32.6-43.9 days on pear and 30.1-39.7 days on plum trees. The construction of life table for Q. perniciosus indicated that the total mortality from settling crawlers to the reproducing stage was considerably fluctuating between host plants and generations. On twigs of apple, plum and pear, it ranged 73.1-87.8, 81.5-87.6 and 86.0-96.4%, respectively. This value was extremely high (87.8, 87.6 and 96.4%) in the 4 th generation (winter generation) on apple, plum and pear, respectively. Analysis of the stage specific mortality of life table indicated that mortality of 2 nd instar female is the Key-stage specific mortality, which can induce population changes in comparison with other specific stage mortalities.

Journal of Plant Protection and Pathology, 2012

The present study was carried out at the experimental farm of Faculty of Agriculture, Mansoura Un... more The present study was carried out at the experimental farm of Faculty of Agriculture, Mansoura University during the two seasons; 2010 and 2011 to evaluate the of (blood orange, loquat and mango) to Florida wax scale, Ceroplastes floridensis (Comst). C. floridensis Population fluctuation exhibited three peaks of abundance in blood orange, Loquat and mango orchards. The more favourable host for C. floridensis was blood orange followed by loquat then mango. However, C. floridensis population showed the highest density on blood orange trees and the lowest on mango trees. The average population density of C. floridensis population was (4.53 ± 3.15, 1.36 ± 0.34 and 1.58± 0.36) and (3.28 ± 1.0, 1.44 ± 0.16 and 1.07 ± 0.10) on blood orange, Lquat and mango leaves, respectively. Chemical analysis indicated that loquat and mandarin leaves had the highest percentage of total protein in comparison with blood orange leaves. On the contrary, the pest exhibited the highest population density on Orange leaves. Statistical analysis indicated that there was a significant positive correlation between the changes of total protein contents and C. floridensis population density in all tested host plants. While, there was correlation with the carbohydrates percent.

Journal of Plant Protection and Pathology, 2016

The present experiments were conducted under laboratory conditions to study the effect of differe... more The present experiments were conducted under laboratory conditions to study the effect of different constant temperatures (25, 30 and 35 0 C) on the development and mortality of the different stages of tomato leafminer, Tuta absoluta (Meyrick) , and to determine the thermal units required for T.absoluta development in relation with degree-days (DD's). The incubation period lasted 5.0 ± 0.6, 4.0 ± 0.6 and 3 ± 0.6 days for eggs at constant temperatures 25, 30 and 35 o C, respectively. The duration of the larval stage was 18.1± 0.2, 12± 0.2 and 8.5± 0.2 days at 25, 30 and 35 o C, respectively. The pupal average durations were 8.5± 3.1, 5.8± 1.4 and 5.2 ± 1.4 days at 25, 30 and 35 o C, respectively. The total developmental periods from egg to adult emergence were 31.6 ±4.5, 21.9 ±1.8 and 16.7 ±1.2 days for 25,30 and 35 o C, respectively. These results proved that all the developmental periods decreased with increasing temperature. The thresholds of development (t 0) were 10.4, 16.3, 8.6 and 13.8 for eggs, larvae, pupae and all immature stages, respectively. The mean thermal constant required for development of T. absoluta eggs, larvae and pupal stages was 75.5 DD's, 160.8 and 182.3 degree-days, respectively

Journal of Plant Protection and Pathology, 2017

Foraging behavior of some coccinellid predators (coccinella. Undecinpunctata L,, Coccinella septe... more Foraging behavior of some coccinellid predators (coccinella. Undecinpunctata L,, Coccinella septempunctata L. and Cydoina vicina isis L.) in response to different host plants (cowpea, white bean and broad bean) and prey species (Aphis gossypii (Glover.) , Myzus persicae (Sultzer.) and Aphis fabae (Scop.)) were evaluated under laboratory conditions. The lady beetles exhibited different searching rate and matual interferace values in response to differant host plant and prey species. However , the searching rate of C. undecimpunctata adults was higher on A. gossypii than on M. persicae and A. fabae especially those reread on cowpea plants. While, C. septumpunctata showed the higher searching rate on M. persicae than A. fabae and A. gossypii ,especially on white bean .On contrary, the highest searching rate of the black lady beetles was recorded on A. fabae and M. persicae reared on white bean (0.769, 0.701)or broad bean (0.746, 0.708) in comparison with A. gossypii. The eleven spotted lady beetles recorded relatively higher mutual interference values in comparison with those of seven-spotted or black lady beetle adults, especially on cowpea plants. The present study revealed that the highest searching rate with relatively low mutual interference value for C. undecimpunctata (0.763, 1.881), C. septumpunctata (0.781, 1.626) and C. vicina isis (0.769, 1.684) were recorded on (A. gossypii reared on cowpea), (M. persicae reared on white bean) and (A. fabae reared on white bean), respectively.

Journal of Plant Protection and Pathology, 2009

The present study was conducted Aga district El-Dakhlia governorate, throughout 2006 and 2007cott... more The present study was conducted Aga district El-Dakhlia governorate, throughout 2006 and 2007cotton seasons. During the course of this study, three strains (I, II and III strains) of entomopathogenic bacteria belonging to Bacillus thurengeinsis Berl. were isolated from the pink (PBW), Pectinophora. gossypiella (Saund.), spiny (SBW), Earias. insulana (Boisd.) and American (ABW), Helicoverpa. armigera (Hub.) bollworms. In addition, two bacterial pathogens namely, (Streptomyces avermecti and Micrococcus sp.) were isolated from the previously bollworm larvae. The pathogenicity of each pathogen suspension was evaluated under laboratory conditions against the fourth larval instars of ABW, SBW and PBW. Statistical analysis indicated that B. thurigiensis strains (especially strain I) induced the highest pathogenicity to ABW, SBW and PBW larvae, while S. avermecti ranked second in the order of activity. Micrococcus sp. induced the lowest pathogenicity. The efficiency of the local strain (I) of B. thurigiensis in comparison with the commercial isolate (Agerin) was evaluated under field conditions. The In the first season (2006), the mean reduction percentages of infestation caused by PBW, SBW and ABW were 61.8, 65.5 and 74.2% in cotton fields treated with the local isolate (B. thurengeinsis strain I), while, the mean reduction percentages of infestation in Agerin treatment were 48. 5, 56.9 and 66.1%, respectively in comparison with control. In the second season (2007), the mean reduction percentages of infestation were 60.4, 55.6 & 63.5% for local isolate of B. thurigiensis and 47.7, 46.0 & 52.4 % for Agerin treatment, respectively.

J. Agric. Sci. Mansoura Univ., 34 (10):, 2009, 2009

The present study was conducted Aga district El-Dakhlia governorate, throughout 2006 and 2007cott... more The present study was conducted Aga district El-Dakhlia governorate, throughout 2006 and 2007cotton seasons. During the course of this study, three strains (I, II and III strains) of entomopathogenic bacteria belonging to Bacillus thurengeinsis Berl. were isolated from the pink (PBW), Pectinophora. gossypiella (Saund.), spiny (SBW), Earias. insulana (Boisd.) and American (ABW), Helicoverpa. armigera (Hub.) bollworms. In addition, two bacterial pathogens namely, (Streptomyces avermecti and Micrococcus sp.) were isolated from the previously bollworm larvae. The pathogenicity of each pathogen suspension was evaluated under laboratory conditions against the fourth larval instars of ABW, SBW and PBW. Statistical analysis indicated that B. thurigiensis strains (especially strain I) induced the highest pathogenicity to ABW, SBW and PBW larvae, while S. avermecti ranked second in the order of activity. Micrococcus sp. induced the lowest pathogenicity. The efficiency of the local strain (I) of B. thurigiensis in comparison with the commercial isolate (Agerin) was evaluated under field conditions. The In the first season (2006), the mean reduction percentages of infestation caused by PBW, SBW and ABW were 61.8, 65.5 and 74.2% in cotton fields treated with the local isolate (B. thurengeinsis strain I), while, the mean reduction percentages of infestation in Agerin treatment were 48. 5, 56.9 and 66.1%, respectively in comparison with control. In the second season (2007), the mean reduction percentages of infestation were 60.4, 55.6 & 63.5% for local isolate of B. thurigiensis and 47.7, 46.0 & 52.4 % for Agerin treatment, respectively.

Journal of Plant Protection and Pathology, 2007

A survey of the hymenopterus parasitoids, associated with, the larvae of sugar cane corn borer, S... more A survey of the hymenopterus parasitoids, associated with, the larvae of sugar cane corn borer, Sesamia cretica Led., in Sakha Agriculatural Research Station Farm at Kafr El-Sheikh Governorate during the two successive seasons 2004 and 2005. Four parasitoids species belonging to the Order and Family (Hymenoptera: Braconidae), were recorded. These parasitoids namely: Meterous sp, Apanteles sp, Cotesia sp and Gleptoapantelas africanus Haliday., as internal lavrval parasitoids of S. cretica. The highest percentages of parasitism by Meterous sp, was recorded on the first week of July (23.6%) during 2004 season, while in the second season 2005 was recorded in the third week of July (24.8%) with an average percentage of parasitism 11.54 and 14.37% during the two successive seasons, respectively. The highest percentages of parasitism by Apanteles sp, was recorded on the second week of August (33.3%) in the first season and the first week of July (28.8%) in the second season. On the other hand the average percentage of parasitism was 13.79 and 19.16% during the two seasons 2004 and 2005, respectively. The highest percentages of parasitism by Cotesia sp. was recorded in the first week of August which reached 30.0 and 31.1% in season 2004 and 2005, respectively. While the average percentage of parasitism were 19.13 and 13.9% in the two seasons, respectively. Regarding to the parasitoid, G. africanus which considers as first record in Egypt as larvae parasitoid on S. cretica, The highest percentages of parasitism were recorded in the second and third week on July (17.7 and 18.0%) during 2004 and 2005 seasons, respectively. On the other hand, the average percentages of parasitism were 4.31 and 4.69% respectively.

Journal of Plant Protection and Pathology, 2013

The relative attractiveness of some olfactory stimulant materials to the oriental hornet wasp, Ve... more The relative attractiveness of some olfactory stimulant materials to the oriental hornet wasp, Vespa orientalis L. was evaluated under laboratory and field conditions. Olfactory stimulant materials included some volatile oils (cinnamon, bananas, camphor and mint) and other natural materials (yeast, chicken litter, asber fermented grapes and sugar syrup as control). The obtained results revealed that the oriental wasp exhibited different degrees of selectivity in response to the tested olfactory stimulant materials. V.orientalis adults exposed to different volatile oils showed the highest attractiveness to cinnamon followed by camphor and mint oils with significant differences. The wasps exhibited the lowest preferability to bananas. The present study indicated that the oriental hornet wasp exhibited significantly positive response to asber fermented grape and chicken litter in comparison with yeast and sugar syrup. So, asber fermented grape and chicken litter successfully attracted the wasp; these materials can be used in monitoring populations of Vespa orientalis. Traps baited with cinnamon oil proved to be good bio control agent against the oriental wasps as they strongly attractive to them. The oriental wasps, V. orientalis population was considerably decreased in treated apiary in comparison with untreated one. Therefore, cinnamon oil could be used against the oriental wasps in IPM programs.

Journal of Plant Protection and Pathology, 2013

The present study was conducted at Kafr El-Sheikh governorate, Sakha district, throughout the pea... more The present study was conducted at Kafr El-Sheikh governorate, Sakha district, throughout the peak of the oriental wasp, Vespa orientalis L. during seasons of 2011 and 2012. The efficacies of a modified Abou El-Enain traps with different height (0.6, o.85, 1.15 and 1.50 m) and new trap desin, wooden shish window traps were evaluated in an apiary and date palm orchard. The obtained results revealed that shish window trap significantly attracted more numerous hornet wasps than those captured by using all heights of modified Abou El-Enain trap. The oriental wasp, V.orientalis population was relatively higher in the second season than those captured in the first one. On the other hand, the weekly average number of the hornet fluctuated all over the experimental period in the apiary and date palm orchard. Relatively higher numbers of the honey bee, Apis mellifera were caught in the modified Abou El-Enian trap, especially at 0.6 m. On the contrary, no catches of honey bee were recorded using wooden shishwindow trap in both seasons.

Lebenstafeln des idiobiotischen Ektoparasitoiden Aphytis diaspidis und seiner beiden Wirte Hemibe... more Lebenstafeln des idiobiotischen Ektoparasitoiden Aphytis diaspidis und seiner beiden Wirte Hemiberlesia lataniae und Quadraspidiotus perniciosus wurden unter Zuhilfenahme der Entwicklungszeit, der altersspezifischen Überlebensrate sowie der Fekundität der Weibchen bei 19 ± 2 °C, 60 ± 10 % rF und 10h:14h L:D konstruiert. Obwohl die beiden Wirtsarten keine dramatischen Unterschiede in den Populationswachstumsparametern (intrinsische (rm) und finite (λ) Zuwachsrate) aufweisen, scheint Q. perniciosus günstiger für die Zucht von A. diaspidis zu sein, da sie eine höhere Netto- (R0) und Bruttoreproduktionsrate (GRR) sowie eine längere Generationsdauer (T) hat. Entsprechend kann sich der Parasitoid in Q. perniciosus-Populationen rascher vermehren als in H. lataniae-Populationen. Die hohe Überlebensrate von A. diaspidis in der frühen Reproduktionsphase und die kurze Generationsdauer tragen signifikant zum Populationswachstum bei und lassen die intrinsische Zuwachsrate (rm) ihrer Wirte um das...

Journal of Applied Entomology, 1988

Fenoxycarb, hydroprene, kinoprene and methoprene have been sprayed on Epidiaspis leperii and its ... more Fenoxycarb, hydroprene, kinoprene and methoprene have been sprayed on Epidiaspis leperii and its ectoparasitoid, Aphytis mytilaspidis. These juvenoids (JHAs) were applied at the time of the peak in larval migration of E. leperii and when the second generation of A. mytilaspidis larvae were overwintering on E. leperii females.

Journal of Applied Entomology, 1994

ABSTRACT While Insegar and the sulfenylated carbamate juvenoid NKI-43049 totally inhibited the eg... more ABSTRACT While Insegar and the sulfenylated carbamate juvenoid NKI-43049 totally inhibited the egg production of Carulaspis juniperi (Hom., Diaspididae), only approximately 1% of the Applaud or NKI-35120 treated females laid eggs. Applaud and the sulfinylated carbamate derivative NKI-35120 resulted a very low egg-production (16% and 4% of the untreated control, respectively). Importantly, the tested fenoxycarb-related compounds did not reduce the rate of parasitization caused by Aphytis mytilaspidis (Hym., Aphelinidae), Applaud, however, had a moderately adverse effect on it.NKI-35120 gave an excellent result at a concentration of 0.1 a.i.% on Lepidosaphes beckii (Hom., Diaspididae). Insegar (0.1 a.i. %) and Applaud (0.05 a.i%) had good activity as well. Males were more sensitive than females for the treatments. NKI-35120 and Insegar strongly reduced the egg production of the females. The treatments did not reduce significantly the rate of parasitization caused by Aphytis lepidosaphes (Hym., Aphelinidae).NKI-35120 and Insegar at a concentration of 0.025 a.i. % strongly affected Ceroplastes japonicus (Hom., Coccidae) development since none of the treated larvae could develop to female. Surprisingly, Applaud had only moderate affectivity on C. japonicus.

Entomologia Experimentalis et Applicata, 1988

The sex pheromone of Epidiaspis leperii Sign, females was extracted by immersing virgin females i... more The sex pheromone of Epidiaspis leperii Sign, females was extracted by immersing virgin females in five different solvents. Chloroform showed to be the best solvent. Bioassay in the field was carried out by using plastic cup traps baited with chloroform and acetone extracts. Chloroform extracts lured the highest number of E. leperii males as well as the red pear scale ectoparasite Aphytis mytilaspidis (Le Baron). Chloroform extracts became inactive after one day. The plastic cup trap was very effective for collecting the wingless males.

Acta Phytopathologica et Entomologica Hungarica, 2013

ABSTRACT

Journal of Plant Protection and Pathology

Gray mold is a serious rot in postharvest tomato fruits caused by the fungal pathogen Botrytis ci... more Gray mold is a serious rot in postharvest tomato fruits caused by the fungal pathogen Botrytis cinerea. Botrytis is the most prevalent postharvest fungi that cause major losses in fresh fruits, vegetables, and ornamentals as well as can infect more than 500 plant species. This investigation was designed to evaluate the effect of Trichoderma culture filtrate on the fungal pathogen in vitro and in vivo conditions. The culture filtrate significantly reduced B. cinerea growth by 94.6, and 73.7% at concentrations of 70, and 60%, respectively. Moreover, the culture filtrate of T. reesei at 70% concentration caused an enormous reduction in incidence and severity of the disease by 80.5, and 90.5% in comparison with the untreated group respectively. The secondary metabolites of several species of Trichoderma had great antifungal activity on the pathogen B. cinerea, thereby might be a promising and eco-friendly strategy for controlling gray mold in tomatoes and various postharvest fruits and vegetables.

Journal of Plant Protection and Pathology

The present investigation was carried out at Aga district (El-Dakhalia Governorate) during 2005/2... more The present investigation was carried out at Aga district (El-Dakhalia Governorate) during 2005/2006 and 2006/2007 seasons to evaluate the seasonal activity of the ectoparasitoids; Exeristes roborator (F.) and Parasierola sp. on the diapausing pink bollworm (PBW), Pectinophora gossypiella (Saunders) larvae. Studies on the factors causing mortality among the diapausing pink bollworm. P. gossypiella larvae indicated that E. roborator (Fam., Ichneumonidae) and Parasierola sp. (Fam., Bethylidae) were mainly observed associated with the (PBW) larvae. The total mortality fluctuated considerably from one month to another during diapausing period. The key factor analysis suggested that E. roborator exhibited a positive density-dependent responses. However, Key-values of E. roborator were more correlated with the host density than the other mortality factors. On the contrary, the parasitoid Parasierola sp. showed no density dependent response. Predatism by the predacious mites and natural mortality are in most cases able to cause high percentage of mortality at all host population level, but no densitydependent responses to increase host populations have been recorded.

Journal of Union of Arab Biologists Cairo A Zoology, Dec 13, 2002

Journal of Plant Protection and Pathology, 2007

Field studies were conducted at the Experimental Research Station, Faculty of Agriculture, Mansou... more Field studies were conducted at the Experimental Research Station, Faculty of Agriculture, Mansoura University, to determine if Matricaria chamomilla is a beneficial insectary plant. The relative attractiveness of insect predators (aphidophagous) and their preys (aphids) to M. chamomilla were evaluated throughout two successive seasons (2005/206 and 2006/2007). The obtained results indicated that M. chamomilla was visited by several insect predators. A total of ten species of aphidophagous were collected. Although species varied somewhat among the two seasons, the most common aphidophagous species in sweep net were belonging to four families namely Coccinellidae, Syrphidae, Staphelinidae and Chrysopidae. Attractiveness of insect predators to M. chamomilla differed by dates and seasons. Chamomile flowers appear to be strongly attractive to aphidophagous species of hoverflies and the coccinellid, Coccinella undecimpunctata L. To test the hypothesis that regulation of aphid population would be improved by providing floral resources (M. chamomilla) for adult natural enemies, an experimental field plots each containing a central bed of pea plants Pisum satavium. A set of plots encircled either by chamomile plants or no forbs. Aphidophagous were more abundant in pea plots encircled by chamomile plants compared to those having no floral plants. Densities of aphid were typically lower in plots containing floral resource plants than in plots without them. On the other hand, the percentage of parasitism was significantly higher on aphid population within plots surrounded with chamomile plants than those without floral resource. These results suggest that M. chamomilla is an insectary plant with facultative mutualist predator-parasitoid visitors.

Journal of Plant Protection and Pathology, 2021

The study was carried out in a greenhouse at Plant Pathology Research Institute, "Agricultural Re... more The study was carried out in a greenhouse at Plant Pathology Research Institute, "Agricultural Research Center, Giza, Egypt" to evaluate bio-char applications of potato scab controlling caused by Streptomyces scabies in sandy and clayey textured soil. Water dressing of potting soils was discussed with the influence of bio-char application to both kinds of infested and non-infested soils. The results showed that the application of bio-char for potato seed bed and the regular irrigation (every 3 days) caused an increase in organic carbon in both sterilized soils. While, the bio-char application in state under seedbed for infested sandy soil caused low nitrogen content at both watering treatments. In this preliminary study similar results were shown in clayey infested soil. Which soil porosity that is being inversely related to disease and it is positively correlated to soil bulk density (bd). Also, the results showed that bio-char application decreased the interspaces between particles consequentially minimizing soil bulk density for watering treatments in concern. The soil reaction (pH) was increased with the application of bio-char to infested soil under both watering system. Biochar amended sandy and clayey soils expressed decreased incidence of scabby tubers especially at higher dose regular watering. This preliminary study reveals that the necessity of bio-char field treatments, to explain in depth the physiological, histological and changes in soil edaphic factors as related to Streptomyces scabies infections.

Journal of Plant Protection and Pathology, 2010

Investigations of life and fertility tables of San Jose Scale (SJS), Quadraspidiotus perniciosus ... more Investigations of life and fertility tables of San Jose Scale (SJS), Quadraspidiotus perniciosus Comstock were conducted to study some of its biological aspects on different host plants (apple, plum and pear). The stage duration, mortality percentage, the net reproductive rate and the intrinsic rate of natural increase were examined. The developmental periods were significantly affected by host plant. The mean duration of the first instar nymph on apple, plum and pear seedlings were 15.8±1.0, 17.5±0.9 and 18.2±0.9 days, respectively. The 2 nd instar female lasted by 18.4±1.5, 19.5±1.8 and 21.7±1.2 days; while the 2 nd instar male lased 12.2±0.6, 13.4±0.5 and 14.1±0.7 days, respectively. The duration of prepupal and pupal stages reared on apple, plum and pear seedlings lasted 7.5±0.9, 6.3±1.2 and 6.5±0.8 days, respectively. The stage specific mortality of life table data indicated that the death factors operated mainly during first and second instar nymph. The fertility of Q. perniciosus females was relatively high on pear followed by plum and apple. The net reproductive rate was 21.7, 29.5 and 30.9 females/ female on apple, plum and pear, respectively. The intrinsic rate of increase (rm) was 0.043, 0.049 and 0.051 females/ female/ day, respectively. In the same order, the time of generation was 71.7, 69.4 and 67.7 days, respectively.

Journal of Plant Protection and Pathology, 2010

The population dynamics of Quadraspidiotus perniciosus Comstock was studied on three host plants ... more The population dynamics of Quadraspidiotus perniciosus Comstock was studied on three host plants (apple, plum and pear). It proved that host plant was an important factor. Changes in the developmental period from settling crawlers to newly adult female ranged 28.4-34.8 days on apple , 32.6-43.9 days on pear and 30.1-39.7 days on plum trees. The construction of life table for Q. perniciosus indicated that the total mortality from settling crawlers to the reproducing stage was considerably fluctuating between host plants and generations. On twigs of apple, plum and pear, it ranged 73.1-87.8, 81.5-87.6 and 86.0-96.4%, respectively. This value was extremely high (87.8, 87.6 and 96.4%) in the 4 th generation (winter generation) on apple, plum and pear, respectively. Analysis of the stage specific mortality of life table indicated that mortality of 2 nd instar female is the Key-stage specific mortality, which can induce population changes in comparison with other specific stage mortalities.

Journal of Plant Protection and Pathology, 2012

The present study was carried out at the experimental farm of Faculty of Agriculture, Mansoura Un... more The present study was carried out at the experimental farm of Faculty of Agriculture, Mansoura University during the two seasons; 2010 and 2011 to evaluate the of (blood orange, loquat and mango) to Florida wax scale, Ceroplastes floridensis (Comst). C. floridensis Population fluctuation exhibited three peaks of abundance in blood orange, Loquat and mango orchards. The more favourable host for C. floridensis was blood orange followed by loquat then mango. However, C. floridensis population showed the highest density on blood orange trees and the lowest on mango trees. The average population density of C. floridensis population was (4.53 ± 3.15, 1.36 ± 0.34 and 1.58± 0.36) and (3.28 ± 1.0, 1.44 ± 0.16 and 1.07 ± 0.10) on blood orange, Lquat and mango leaves, respectively. Chemical analysis indicated that loquat and mandarin leaves had the highest percentage of total protein in comparison with blood orange leaves. On the contrary, the pest exhibited the highest population density on Orange leaves. Statistical analysis indicated that there was a significant positive correlation between the changes of total protein contents and C. floridensis population density in all tested host plants. While, there was correlation with the carbohydrates percent.

Journal of Plant Protection and Pathology, 2016

The present experiments were conducted under laboratory conditions to study the effect of differe... more The present experiments were conducted under laboratory conditions to study the effect of different constant temperatures (25, 30 and 35 0 C) on the development and mortality of the different stages of tomato leafminer, Tuta absoluta (Meyrick) , and to determine the thermal units required for T.absoluta development in relation with degree-days (DD's). The incubation period lasted 5.0 ± 0.6, 4.0 ± 0.6 and 3 ± 0.6 days for eggs at constant temperatures 25, 30 and 35 o C, respectively. The duration of the larval stage was 18.1± 0.2, 12± 0.2 and 8.5± 0.2 days at 25, 30 and 35 o C, respectively. The pupal average durations were 8.5± 3.1, 5.8± 1.4 and 5.2 ± 1.4 days at 25, 30 and 35 o C, respectively. The total developmental periods from egg to adult emergence were 31.6 ±4.5, 21.9 ±1.8 and 16.7 ±1.2 days for 25,30 and 35 o C, respectively. These results proved that all the developmental periods decreased with increasing temperature. The thresholds of development (t 0) were 10.4, 16.3, 8.6 and 13.8 for eggs, larvae, pupae and all immature stages, respectively. The mean thermal constant required for development of T. absoluta eggs, larvae and pupal stages was 75.5 DD's, 160.8 and 182.3 degree-days, respectively

Journal of Plant Protection and Pathology, 2017

Foraging behavior of some coccinellid predators (coccinella. Undecinpunctata L,, Coccinella septe... more Foraging behavior of some coccinellid predators (coccinella. Undecinpunctata L,, Coccinella septempunctata L. and Cydoina vicina isis L.) in response to different host plants (cowpea, white bean and broad bean) and prey species (Aphis gossypii (Glover.) , Myzus persicae (Sultzer.) and Aphis fabae (Scop.)) were evaluated under laboratory conditions. The lady beetles exhibited different searching rate and matual interferace values in response to differant host plant and prey species. However , the searching rate of C. undecimpunctata adults was higher on A. gossypii than on M. persicae and A. fabae especially those reread on cowpea plants. While, C. septumpunctata showed the higher searching rate on M. persicae than A. fabae and A. gossypii ,especially on white bean .On contrary, the highest searching rate of the black lady beetles was recorded on A. fabae and M. persicae reared on white bean (0.769, 0.701)or broad bean (0.746, 0.708) in comparison with A. gossypii. The eleven spotted lady beetles recorded relatively higher mutual interference values in comparison with those of seven-spotted or black lady beetle adults, especially on cowpea plants. The present study revealed that the highest searching rate with relatively low mutual interference value for C. undecimpunctata (0.763, 1.881), C. septumpunctata (0.781, 1.626) and C. vicina isis (0.769, 1.684) were recorded on (A. gossypii reared on cowpea), (M. persicae reared on white bean) and (A. fabae reared on white bean), respectively.