Santoshkumar C. Kedar | Chaudhary Charan Singh Haryana Agricultural University - Hisar (INDIA) (original) (raw)

Uploads

Papers by Santoshkumar C. Kedar

The occurrence of Trilocha varians (Bombycidae: Lepidoptera) larvae damaging the leaves of Ficus ... more The occurrence of Trilocha varians (Bombycidae: Lepidoptera) larvae damaging the leaves of Ficus religiosa, Ficus infectoria, Ficus benjamina, Ficus elastica and Ficus benghalensis is reported for the first time from Hisar, Haryana. T. varians larvae caused 80-90 per cent defoliation in Ficus spp., trees. Information on morphology of different life stages of T. varians is highlighted in this report. The larvae and pupae were parasitized by ichneumonid wasps, Enicospilus sp. and Goryphus sp. respectively. Further studies on T. varians biology, management, host range and natural enemies associated with it is necessary to avoid future outbreak.

Studies on impact of weather parameters on coccinellids population in cotton (var. H-1117) was st... more Studies on impact of weather parameters on coccinellids population in cotton (var. H-1117) was
studied during 2011-12 and 2012-13 at Research Farm of Department of Entomology, Chaudhary Charan
Haryana Agricultural University, Hisar. The population of coccinellids reached peak twice during 29th and
41st standard week in 2011-12 ( 1.3 and 1.6 coccinellids/plant). During 2012-13 coccinellids population
reached its peak during 30th and 42nd standard week ( 1.6 and 1.7 coccinellids/plant). The
correlation studies revealed that the maximum temperature, minimum temperature and wind speed showed
highly significant negative correlation with coccinellids population. However, morning relative humidity
showed highly significant positive correlation with population buildup of coccinellids. The effects of other
Weather parameters, namely, evening relative humidity, sunshine hours and rainfall was positive but nonsignificant.
All the weather parameters together explained 70.6 and 60.0 per cent variation in the coccinellids
population in cotton during 2011-12 and 2012-13, respectively.

Surveys at Hisar (Haryana) and nearby areas conducted at fortnightly intervals from 2011 to 2014 ... more Surveys at Hisar (Haryana) and nearby areas conducted at fortnightly intervals from 2011 to 2014 identified the host plants of whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) and evaluated its populations on them. The results revealed that among the 114 host plants (belonging to 32 families) identified, 35 were weeds, 25 ornamentals, 20 field crops, 17 vegetables, 13 medicinal plants and 4 fruit crops. Based on number of species/family serving as hosts and population density, it was observed that plants belonging to the family Fabaceae, Asteraceae, Solanaceae, Malvaceae and Cucurbitaceae were the most preferred and important families. Host plants supporting it during spring, summer and winter seasons are also categorised. Implications with respect to management are discussed.

Studies on seasonal abundance of S. parcesetosum and its predatory potential on whitefly in cotto... more Studies on seasonal abundance of S. parcesetosum and its predatory potential on whitefly in cotton were carried out in field and laboratory conditions. The peak activity of B. tabaci nymphs and S. parcesetosum
larvae and adults were observed in cotton fields in mid growing season. Development duration of S. parcesetosum averaged 21.9 days and it was longest for pupa and shortest in first instar. The mean prey consumption increased with growth of the predator, being maximum in the fourth instar. On an average, a single S. parcesetosum larva consumed a mean of 560.2 nymphs of B. tabaci during its entire larval period of 12.8 days. The predator was active for most part of the cotton season. Which indicated it to be a potential biological control agent for B. tabaci.

Studies on seasonal incidence of B. tabaci nymphs and adults on Bt cotton hybrid RCH 134 BG II in... more Studies on seasonal incidence of B. tabaci nymphs and adults on Bt cotton hybrid RCH 134 BG II indicated that the pest reached its peak twice in the cotton growing season first two years (28 th to 30 th SW and 40 th to 41 st SW). But, in 3 rd year only single peak was observed (30 th SW). Among the weather parameters, minimum temperature, evening relative humidity and wind speed had significant negative correlation with whitefly population. The multiple regression analysis revealed the combined effects of weather parameters explained 39-59 per cent (R 2 ) and 47-52 per cent (R 2 ) variability in B. tabaci nymphal and adult population on Bt cotton.

Surveys were carried out during 2008-2011 to study the seasonal occurrence Solenopsis mealybug, P... more Surveys were carried out during 2008-2011 to study the seasonal occurrence Solenopsis
mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) on different host plants in cotton
growing areas around Hisar. The pest was recorded to colonize 51 plant species belonging to 19 families.
Greater preference of the pest, based on number of plant species attacked, as well as maximum damage
by the pest (injury Grade IV symptoms) was recorded on the plants belonging to family Malvaceae,
Solanaceae and Asteraceae. Important host plants supporting P. solenopsis throughout the year included
Achyranthes aspera, Conyza canadensis, Parthenium hysterophorus, Codiaeum variegatum, Abutilon indicum,
Hibiscus rosa sinensis, Hibiscus schizopitalus, Hibiscus syriacus, Withania somnifera, Corchorus trilocularis
and Lantana camara. Prominent host plants supporting the pest during off season were Chrysanthemum
indicum, Tagetes erecta, Tagetes patula, Azadirachta indica, Lycopersicon esculentum, Helianthus annus and
Verbena hybrida.

Journal of Entomological Research, Jun 1, 2014

Studies on biology of cotton whitefly, Bemisia tabaci were carried out under screen house conditi... more Studies on biology of cotton whitefly, Bemisia tabaci were carried out under screen house conditions on cotton (variety H-1117 and hybrid RCH 134 BG II). Whitefly exhibited three nymphal instars and a pupal stage before reaching the adult stage. The fecundity varied from 34-49 and 45-69 eggs per female on cotton variety and cotton hybrid, respectively. Total life cycle from egg to adult was varied from 19-28 and 18-27 days on cotton variety and hybrid, respectively.

Journal of Biopesticides , Jun 2, 2014

The whitefly, Bemisia tabaci (Gennadius) is a worldwide pest in diverse agroecosystems. There are... more The whitefly, Bemisia tabaci (Gennadius) is a worldwide pest in diverse agroecosystems. There are numerous species of predators and parasitoids that are associated with this pest. A field survey was
conducted to determine the natural enemies of B. tabaci in 14 cultivated crops in Hisar, Haryana. Six species of natural enemies of B. tabaci were observed, including 5 species of predators and one species of parasitoid. Serangium parcesetosum Sicard, Cheilomenes sexmaculata (Fabricius) and
Brumoides suturalis (Fabricius) were the most commonly found predators. Encarsia lutea was the only nymphal parasitoid reported on seven crops. S. parcesetosum was reported for the first time from Haryana on B. tabaci on cotton.

Journal of Entomological Research, Aug 1, 2013

outbreak of Amaranthus caterpillar, Spoladea recurvalis was observed on weed, Trianthema portulac... more outbreak of Amaranthus caterpillar, Spoladea recurvalis was observed on weed, Trianthema portulacastrum, in cotton, pigeon pea, okra, gaur and black gram fields during July and August 2012. Caterpillar were observed feeding voraciously on leaves and caused complete destruction of weed. The caterpillar also showed parasitization by Apanteles sp.

Journal of Cotton Research and Development , Jan 2013

Journal of Insect Science, Apr 2011

Journal of Entomological Research, Mar 31, 2013

on different host plants, 120 crawlers of mealybug, Phenacoccus solenopsis were released under ca... more on different host plants, 120 crawlers of mealybug, Phenacoccus solenopsis were released under caged condition and observations on different parameters were recorded. Survival of the pest was significantly higher on Parthenium hysterophorus (80.8%) and cotton (80%) than on Solanum melongena (35.8%). development duration was significantly lower on cotton (19.9 days) and P. hysterophorus (20.5 days) as compared to egg plant (22.7 days). body length, width and weight of the pest was maximum on cotton, being 4.66 mm, 2.70 mm and 9.28 mg, respectively.

the results indicated that mealy bug survival was higher under caged conditions, and the rate of ... more the results indicated that mealy bug survival was higher under caged conditions, and the rate of decline of mealy bug population was also quite slow. the ambient conditions of temperature and relative humidity did not seem to have much effect on mealy bug population. However, sharp reductions in mealy bug populations were observed after heavy rains. It signified the role of heavy rains in suppressing mealy bug population. Among the biotic factors, the mealy bug parasitoid, Aenasius bambawalei Hayat, was found to be active on mealy bug colonies through out the observation period (i.e. July to October) and caused on an average 32.6, 42.4, 6.6 and 16 per cent reduction in the mealy bug population during July, August, september and October, respectively, when observed after 20 days of release of crawlers.

Journal of Entomological Research, Sep 2011

Surveys on coccinellid predators associated with solenopsis mealybug, Phenacoccus solenopsis Tins... more Surveys on coccinellid predators associated with solenopsis mealybug, Phenacoccus solenopsis Tinsley, infesting cotton and other host plants in and around Hisar, Haryana revealed that six species of coccinellids i.e. Scymnus coccivora Ayyar, Nephus regularis Sicard, Brumoides suturalis Fabricius, Hippodamia variegata Goeze, Cheilomenes sexmaculata Fabricius and Coccinella septempunctata L. were associated with P. solenopsis. 246 mealybug, Phenacoccus solani Ferris (Hemiptera: Pseudococcidae), its parasitoid and predator complex, reproductive potential and utilization as laboratory prey for rearing the ladybird and green lacewing predators. J. ent. Res., 31(3):

Annals of Plant Protection Sciences, Sep 2011

Journal of insect science, Apr 2011

The occurrence of Trilocha varians (Bombycidae: Lepidoptera) larvae damaging the leaves of Ficus ... more The occurrence of Trilocha varians (Bombycidae: Lepidoptera) larvae damaging the leaves of Ficus religiosa, Ficus infectoria, Ficus benjamina, Ficus elastica and Ficus benghalensis is reported for the first time from Hisar, Haryana. T. varians larvae caused 80-90 per cent defoliation in Ficus spp., trees. Information on morphology of different life stages of T. varians is highlighted in this report. The larvae and pupae were parasitized by ichneumonid wasps, Enicospilus sp. and Goryphus sp. respectively. Further studies on T. varians biology, management, host range and natural enemies associated with it is necessary to avoid future outbreak.

Studies on impact of weather parameters on coccinellids population in cotton (var. H-1117) was st... more Studies on impact of weather parameters on coccinellids population in cotton (var. H-1117) was
studied during 2011-12 and 2012-13 at Research Farm of Department of Entomology, Chaudhary Charan
Haryana Agricultural University, Hisar. The population of coccinellids reached peak twice during 29th and
41st standard week in 2011-12 ( 1.3 and 1.6 coccinellids/plant). During 2012-13 coccinellids population
reached its peak during 30th and 42nd standard week ( 1.6 and 1.7 coccinellids/plant). The
correlation studies revealed that the maximum temperature, minimum temperature and wind speed showed
highly significant negative correlation with coccinellids population. However, morning relative humidity
showed highly significant positive correlation with population buildup of coccinellids. The effects of other
Weather parameters, namely, evening relative humidity, sunshine hours and rainfall was positive but nonsignificant.
All the weather parameters together explained 70.6 and 60.0 per cent variation in the coccinellids
population in cotton during 2011-12 and 2012-13, respectively.

Surveys at Hisar (Haryana) and nearby areas conducted at fortnightly intervals from 2011 to 2014 ... more Surveys at Hisar (Haryana) and nearby areas conducted at fortnightly intervals from 2011 to 2014 identified the host plants of whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) and evaluated its populations on them. The results revealed that among the 114 host plants (belonging to 32 families) identified, 35 were weeds, 25 ornamentals, 20 field crops, 17 vegetables, 13 medicinal plants and 4 fruit crops. Based on number of species/family serving as hosts and population density, it was observed that plants belonging to the family Fabaceae, Asteraceae, Solanaceae, Malvaceae and Cucurbitaceae were the most preferred and important families. Host plants supporting it during spring, summer and winter seasons are also categorised. Implications with respect to management are discussed.

Studies on seasonal abundance of S. parcesetosum and its predatory potential on whitefly in cotto... more Studies on seasonal abundance of S. parcesetosum and its predatory potential on whitefly in cotton were carried out in field and laboratory conditions. The peak activity of B. tabaci nymphs and S. parcesetosum
larvae and adults were observed in cotton fields in mid growing season. Development duration of S. parcesetosum averaged 21.9 days and it was longest for pupa and shortest in first instar. The mean prey consumption increased with growth of the predator, being maximum in the fourth instar. On an average, a single S. parcesetosum larva consumed a mean of 560.2 nymphs of B. tabaci during its entire larval period of 12.8 days. The predator was active for most part of the cotton season. Which indicated it to be a potential biological control agent for B. tabaci.

Studies on seasonal incidence of B. tabaci nymphs and adults on Bt cotton hybrid RCH 134 BG II in... more Studies on seasonal incidence of B. tabaci nymphs and adults on Bt cotton hybrid RCH 134 BG II indicated that the pest reached its peak twice in the cotton growing season first two years (28 th to 30 th SW and 40 th to 41 st SW). But, in 3 rd year only single peak was observed (30 th SW). Among the weather parameters, minimum temperature, evening relative humidity and wind speed had significant negative correlation with whitefly population. The multiple regression analysis revealed the combined effects of weather parameters explained 39-59 per cent (R 2 ) and 47-52 per cent (R 2 ) variability in B. tabaci nymphal and adult population on Bt cotton.

Surveys were carried out during 2008-2011 to study the seasonal occurrence Solenopsis mealybug, P... more Surveys were carried out during 2008-2011 to study the seasonal occurrence Solenopsis
mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) on different host plants in cotton
growing areas around Hisar. The pest was recorded to colonize 51 plant species belonging to 19 families.
Greater preference of the pest, based on number of plant species attacked, as well as maximum damage
by the pest (injury Grade IV symptoms) was recorded on the plants belonging to family Malvaceae,
Solanaceae and Asteraceae. Important host plants supporting P. solenopsis throughout the year included
Achyranthes aspera, Conyza canadensis, Parthenium hysterophorus, Codiaeum variegatum, Abutilon indicum,
Hibiscus rosa sinensis, Hibiscus schizopitalus, Hibiscus syriacus, Withania somnifera, Corchorus trilocularis
and Lantana camara. Prominent host plants supporting the pest during off season were Chrysanthemum
indicum, Tagetes erecta, Tagetes patula, Azadirachta indica, Lycopersicon esculentum, Helianthus annus and
Verbena hybrida.

Journal of Entomological Research, Jun 1, 2014

Studies on biology of cotton whitefly, Bemisia tabaci were carried out under screen house conditi... more Studies on biology of cotton whitefly, Bemisia tabaci were carried out under screen house conditions on cotton (variety H-1117 and hybrid RCH 134 BG II). Whitefly exhibited three nymphal instars and a pupal stage before reaching the adult stage. The fecundity varied from 34-49 and 45-69 eggs per female on cotton variety and cotton hybrid, respectively. Total life cycle from egg to adult was varied from 19-28 and 18-27 days on cotton variety and hybrid, respectively.

Journal of Biopesticides , Jun 2, 2014

The whitefly, Bemisia tabaci (Gennadius) is a worldwide pest in diverse agroecosystems. There are... more The whitefly, Bemisia tabaci (Gennadius) is a worldwide pest in diverse agroecosystems. There are numerous species of predators and parasitoids that are associated with this pest. A field survey was
conducted to determine the natural enemies of B. tabaci in 14 cultivated crops in Hisar, Haryana. Six species of natural enemies of B. tabaci were observed, including 5 species of predators and one species of parasitoid. Serangium parcesetosum Sicard, Cheilomenes sexmaculata (Fabricius) and
Brumoides suturalis (Fabricius) were the most commonly found predators. Encarsia lutea was the only nymphal parasitoid reported on seven crops. S. parcesetosum was reported for the first time from Haryana on B. tabaci on cotton.

Journal of Entomological Research, Aug 1, 2013

outbreak of Amaranthus caterpillar, Spoladea recurvalis was observed on weed, Trianthema portulac... more outbreak of Amaranthus caterpillar, Spoladea recurvalis was observed on weed, Trianthema portulacastrum, in cotton, pigeon pea, okra, gaur and black gram fields during July and August 2012. Caterpillar were observed feeding voraciously on leaves and caused complete destruction of weed. The caterpillar also showed parasitization by Apanteles sp.

Journal of Cotton Research and Development , Jan 2013

Journal of Insect Science, Apr 2011

Journal of Entomological Research, Mar 31, 2013

on different host plants, 120 crawlers of mealybug, Phenacoccus solenopsis were released under ca... more on different host plants, 120 crawlers of mealybug, Phenacoccus solenopsis were released under caged condition and observations on different parameters were recorded. Survival of the pest was significantly higher on Parthenium hysterophorus (80.8%) and cotton (80%) than on Solanum melongena (35.8%). development duration was significantly lower on cotton (19.9 days) and P. hysterophorus (20.5 days) as compared to egg plant (22.7 days). body length, width and weight of the pest was maximum on cotton, being 4.66 mm, 2.70 mm and 9.28 mg, respectively.

the results indicated that mealy bug survival was higher under caged conditions, and the rate of ... more the results indicated that mealy bug survival was higher under caged conditions, and the rate of decline of mealy bug population was also quite slow. the ambient conditions of temperature and relative humidity did not seem to have much effect on mealy bug population. However, sharp reductions in mealy bug populations were observed after heavy rains. It signified the role of heavy rains in suppressing mealy bug population. Among the biotic factors, the mealy bug parasitoid, Aenasius bambawalei Hayat, was found to be active on mealy bug colonies through out the observation period (i.e. July to October) and caused on an average 32.6, 42.4, 6.6 and 16 per cent reduction in the mealy bug population during July, August, september and October, respectively, when observed after 20 days of release of crawlers.

Journal of Entomological Research, Sep 2011

Surveys on coccinellid predators associated with solenopsis mealybug, Phenacoccus solenopsis Tins... more Surveys on coccinellid predators associated with solenopsis mealybug, Phenacoccus solenopsis Tinsley, infesting cotton and other host plants in and around Hisar, Haryana revealed that six species of coccinellids i.e. Scymnus coccivora Ayyar, Nephus regularis Sicard, Brumoides suturalis Fabricius, Hippodamia variegata Goeze, Cheilomenes sexmaculata Fabricius and Coccinella septempunctata L. were associated with P. solenopsis. 246 mealybug, Phenacoccus solani Ferris (Hemiptera: Pseudococcidae), its parasitoid and predator complex, reproductive potential and utilization as laboratory prey for rearing the ladybird and green lacewing predators. J. ent. Res., 31(3):

Annals of Plant Protection Sciences, Sep 2011

Journal of insect science, Apr 2011

Book Chapter, Feb 28, 2013

Crucifers are important commercially cultivated vegetable crops and are widely grown in many part... more Crucifers are important commercially cultivated vegetable crops and are widely grown in many parts of the world, including the highlands in most tropical countries. They are frequently attacked by a number of important insect pests. Some have been a problem for a long time while others have become important only recently. The present article gives emphasis on the identification, life cycle, nature of damage and sustainable management of major insect pests of the cruciferous vegetables.

Popular Kheti, 2014

Okra (Abelmoschus esculentus), is an important vegetable crop grown throughout the year in India.... more Okra (Abelmoschus esculentus), is an important vegetable crop grown throughout the year in India. The crop is attacked by number of pests of which shoot and fruit borer, leafhopper, whitefly, red spider mite, solenopsis mealy bug and root-knot nematode are most serious causing substantial reduction in crop growth and yield. In the present document the identification, life-history, nature of damage, management and various IPM practices have been discussed to save the crop from pests’ damage.

Popular Kheti, Dec 31, 2013

Okra crop under ecological conditions of India is severely infested by sucking pests like leafhop... more Okra crop under ecological conditions of India is severely infested by sucking pests like leafhopper, Amrasca biguttula biguttula (Ishida), whitefly, Bemisia tabaci (Gennadius), two spotted spider mite, Tetranychus urticae Koch and shoot and fruit borers, Earias vittella (Fabricius) and Earias insulana. This practical manual contains information on the major insect pests damaging okra. The identification and management of each species is discussed in this book. The detailed photographs showing damage symptoms allow for rapid identification of insect pest problems. For each pest, integrated pest management practices is also described in this book. The book on Practical manual of insect pests on okra: a field guide for identification and management would prove useful to okra growers, extension workers, students and researchers worldwide to help them for identification of insect pest problems and their management.