Seasonal Incidence of Brinjal Fruit and Shoot Borer , Leucinodes Orbonalis Guen . ( Lepidoptera : Crambidae ) Under Agro Climatic Conditions of Allahabad , India (original) (raw)
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Journal of entomology and zoology studies, 2020
To study the pest incidence of shoot and fruit borer, Leucinodes orbonalis, Guenee on brinjal during kharif season of 2019. Studies on the incidence of shoot infestation of Leucinodes orbonalis Guenee 2019 Kharif season was commenced from 32 standard week (August first week) on shoot with an average 0.32% infestation. The borer population increased and gradually reached peak level of 34.62% of larval population at 42 standard week (October third week) and decline in the trend was noticed this may be due to fail in congenial weather parameters. The pest builds up was correlating with max temperature and declined as it falls followed by the incidence of fruit infestation of Leucinodes orbonalis Guenee 2019 Kharif season commenced from 35 standard week (Last week of August) on shoot with an average 0.83% infestation. The borer population increased and gradually reached peak level of 41.28% of larval population at 46 standard week (second week of November) and decline in the trend was n...
Journal of Entomology and Zoology Studies, 2020
The present investigation was carried out during the Kharif season, 2017-18 at Student's Instructional Farm, N. D. University of Agriculture and Technology, Kumarganj, Faizabad (U.P.). The incidence of brinjal shoot and fruit borer (Leucinodes orbonalis) were recorded. Maximum and minimum shoot infestation was recorded in 48 th SW and 4 th SW i.e. 7.42 and 0.13 shoot damage/plant respectively. Maximum and minimum fruit infestation was recorded in 48 th SW and 4 th SW i.e. 8.04 and 0.81 fruit damage/plant respectively. Correlation coefficient was worked out between the incidence of insect pests and abiotic factors. In case of shoot infestation by brinjal shoot and fruit borer, the correlation was positive with maximum temperature while it was negative with minimum temperature, RH and rainfall. In case of fruit infestation by brinjal shoot and fruit borer, the correlation was negative with minimum and maximum temperature as well as with RH and rainfall.
Journal of entomology and zoology studies, 2020
The present study entitled, “To study the seasonal incidence of shoot and fruit borer, (Leucinodes orbonalis Guenee) on brinjal during Kharif season of 2016 in Trans Yamuna region of Allahabad” was undertaken at the Central Research Farm, SHUATS, Allahabad. The data so obtained through observation on various aspects were subjected to statistical analysis wherever necessary and the data was compiled. Results, thus obtained are presented aspect wise as the occurrence of Leucinodes orbonalis Guenee in Per cent shoot infestation was recorded in 2016 Kharif season was commenced from 34rd standard week (August third week) on shoot with an average 3.85 % infestation. The borer population increased and gradually reached peak level of 33.5% of larval population at 42nd standard week (October third week) and decline in the trend was noticed this may be due to fall in congenial weather parameters and the per cent fruit data showed that from 39th standard week (third week of September) on shoot...
Biological studies on brinjal shoot and fruit borer, Leucinodes orbonalis Guenee
Journal of entomology and zoology studies, 2018
The biology of brinjal shoot and fruit borer, Leucinodes orbonalis, was studied on brinjal variety Punjab Sada bahar. The different parameters of biology viz. incubation period, larval period, pupal period, oviposition, fecundity, adult longevity and sex ratio were studied during different months i.e. June, August and October. The results revealed that there was significant difference in duration of all the biological parameters during three different seasons and minimum duration of incubation period (3.19 days), larval period (11.31 days), pupal period (7.11 days) was observed during August when mean temperature and relative humidity was 29.5 oC and 79.25 per cent respectively. The total life span was observed to be short during August followed by June and October.
Journal of entomology and zoology studies, 2017
The present studies on biology of brinjal shoot and fruit borer (Leucinodes orbonalis Guenee) on brinjal cvs. 'Neelkanth' and 'Pusa Purple Long' was carried out during 2016 in the laboratory conditions in the Department of Entomology, Dr. Y S Parmar University of Horticulture and Forestry, Nauni, Solan. From studies it was found that the incubation period was 3.72 and 3.51 days on 'Neelkanth' and 'Pusa Purple Long' whereas the larval period was found 13.52 and 14.39 days on 'Pusa Purple Long' and 'Neelkanth'. The total developmental period was 24.52 and 26.41 days on 'Pusa Purple Long' and 'Neelkanth' cultivars, respectively. The fecundity was more on 'Pusa Purple Long' (210.20 eggs per female), as compared to 'Neelkanth' cultivar (193.40 eggs per female). From studies, it was also found that developmental biology was shorter in 'Pusa Purple Long' whereas longer in 'Neelkanth'.
International Journal of Bio-resource and Stress Management, 2014
Article History Correspondence to Keywords Manuscript No. AR691 The study on the variation in larval population of brinjal shoot and fruit borer (BSFB), Leucinodes orbonalis Guene was carried out during rainy, winter and summer seasons of 2009-10 and 2010-11 at Keonjhar district of Odisha under field conditions. During rainy season, the larval infestation initiated in last week of June and increased progressively with two distinct peak level. The first peak was observed during 2 nd and 3 rd week of August and the second one was attained during 3 rd week of September and 1 st week of October, respectively in 2009 and 2010. In the winter season, the larvae of BSFB appeared for the first time 4 th week of October with two subsequent peak population level during the crop growth period. The initial peak was attained during 3 rd and 1 st week of December for 2009-10 and 2010-11, respectively and the subsequent peak was observed at 3 rd week of February for both the years of study. In contrast, in the summer season the larvae of BSFB first appeared on 4 th week of January during both the years of trial and registered an increasing trend to attain two well defined peaks during the crop growth period. The first peak larval population was observed during 1 st fortnight of April followed by the second peak during 3 rd week of May. Among the ecological parameters temperature exerted positive and relative humidity had negative influence on the pattern of larval population variation. These two weather variable had maximum contribution towards the variation in larval intensity. *
Among the vegetable crops grown in India, brinjal occupies largest area and plays a vital role in total vegetable production. Brinjal is more vulnerable to the damage caused by shoot and fruit borer, Leucinodes orbonalis Guenee which acts as a major pest and cause heavy economic loss to the farmers. To avoid ill effects of insecticides, bio-intensive integrated pest management strategies have been promoted through front line demonstrations in 10 farmers field at Thirupathisaram, Kanyakumari district, Tamil Nadu, India. The results of ten demonstrations conducted during the year 2015-16 and 2016-17 revealed that shoot and fruit borer damage at vegetative phase was 2.98 per cent in recommended practice and 19.35 in farmers practice. Fruit damage was found to be low in recommended practice (7.71 per cent) while in farmers practice, it was 36.53 per cent. Fruit yield was found to be high (30.45/ha) in IPM field when compared to farmers practice (23.24 t/ha). Benefit Cost Ratio also was found to be high (3.74) in IPM field where as the ratio is low (2.10) in farmers practice.