Fruit borer on okra

Fruit borer, Helicoverpa armigera (Hubner) is a persistent pest on okra among fruit borer complex throughout India. Experiments were undertaken to investigate the persistence of spinetoram 12 SC against larval stage of H. armigera in the laboratory and to evaluate the effectiveness in the field in two seasons.

9p cothumenhmong9 18-01-2021 15 2   Download

The present field studies were conducted during kharif 2016 to determine the field efficacy of selected insecticides and neem products against shoot and fruit borer [Earias vittella (Fabricius)] on okra [Abelmoschus esculentus (L.) Moench]” at Central agriculture field, SHUATS (Sam Higgin bottom University of Agriculture, Technology and Sciences), Allahabad, Uttar Pradesh (India).

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An experiment was conducted on bioefficacy of newer and biorational insecticides against shoot and fruit borer on okra. Efficacy of insecticides tested against Earias spp on okra indicated that the minimum per cent infestation of shoot and fruit borer was found in the treatment of indoxacarb (1.36%) followed by spinosad (1.75%), emamectin benzoate (2.57%) and fipronil (2.98%). The acetamiprid, acephate, dimethoate/ malathion and NSKE registered 3.25, 4.23, 4.81 and 5.28 per cent infestation of shoot and fruit borer and existed in moderate group of efficacy. The treatments of B.

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The experiment was conducted in the Student’s Instructional farm of NDUAT, Faizabad during Kharif, 2012 and 2013 to evaluate the effects of various biophysical plant characters on twenty four okra germplasm against shoot and fruit borer, Earias spp. The results indicated that all the tested germplasm were significantly differed in relation to shoot and fruit borer population at shoot and fruit stages of the crop.

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A field experiment was conducted during kharif season of 2017-18 at Central Research Field, Department of Entomology, SHUATS, Allahabad, (U.P) to study the seasonal incidence of shoot and fruit borer [Earias vittella (Fab)]on okra during kharif season of 2017 in Allahabad region. The incidence of shoot and fruit borer recorded during 2017- 2018 in the kharif season of okra crop variety Kashi Pragathi (VRO-6) has been presented in table 4.1 and fig. 4.1 (a) along with key abiotic factors viz., maximum and minimum temperatures, relative humidity and rainfall.

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The present investigation was carried out at Horticulture Research Station, Dr. Y. S. R Horticultural University, Venkataramannagudem, West Godavari district during kharif season, 2018.Based on D2 values, the twenty-nine hybrids of okra grouped into six clusters. Among the sixclusters, cluster III comprised the maximum number of hybrids (6) followed by cluster II (5), cluster V (5), cluster VI (5), cluster I (4) and cluster IV (4). The maximum inter cluster distance was observed between clusters I and VI (D2 =65.06) followed by clusters II and VI (D2 =62.51).

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A field experiment on “Effect of INM on growth, yield and quality of Okra [Abelmoschus esculentus (L.) Moench]” was conducted at the instructional farm of Krishi Vigyan Kendra Jajpur situated at Badachana. The experiment was conducted to find out the best suited integrated nutrient management practices for reducing incidence of disease and pest. The experiment was laid out in randomized block design (RBD) with three replications and twelve treatments.

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Experimentation was done to observe the efficacy of some insecticides against shoot and fruit borer, Earias vittella (Fabricius) of okra during kharif season 2016 at the Horticulture farm, Department of Horticulture, College of Agriculture, Indira Gandhi Krishi Vishwavidyalaya (IGKV) Raipur, Chhattisgarh. The insecticidal treatments BAS 450 01 I 300 SC @18.5g.a.i./ha was found to be most effective as it recorded minimum fruit damage (14.29%) followed by Chlorantraniliprole 18.5% SC@ 25g.a.i./ha (15.68%). BAS 450 01 I 300 SC @12.5g.a.i./ha (16.33%) and BAS 450 01 I 300 SC @6.5g.a.i./ha (18.

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Investigations on evaluation of effect of different nitrogen sources on major insect pests infesting okra was carried out at the Department of Entomology, Rajasthan Agricultural Research Institute, Durgapura, Jaipur during kharif 2016 and 2017. The major insect pests infesting okra observed during two consecutive seasons were leaf hopper, A. biguttula biguttula; whitefly, B. tabaci and okra shoot and fruit borer and E. vittella. Different sources of nitrogen were applied as different treatments to the okra crop.

8p cothumenhmong1 11-12-2019 32 0   Download