Okra fruit borer

Screening of okra genotypes was carried out under four different environments for shoot and fruit borer, yellow vein mosaic virus disease and enation leaf curl virus disease. The genotypes responded differently to different environments against different insect-pests and diseases. None of the genotype was found free from shoot and fruit borer infection, YVMV and ELCV incidence. However the genotypes that were found with some degree of resistance might be used for future breeding programmes.

11p trinhthamhodang11 27-04-2021 12 1   Download

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.

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The infestation to okra accounted for nearly 22.5% in Uttar Pradesh (Verma et al., 1985). Earias vittella causes considerable damage at vegetative and reproductive stages and acts as major constraints in the production of marketable fruits of okra.

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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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Insect pest is one of the major Earias vittella is one of the important pest of okra and its management is also difficult for its insecticidal resistance mechanism though few chemical and bioagent are effective against fruit borer. Insecticidal like quinalphos, monocrotophos, fenvalerate, deltamethrin, Flubendiamide etc. are effective to manage this insect. Combination of these insecticides is also effective and also able to overcome Insecticidal resistance mechanism.

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he field experiment was conducted to study the varietal preference of okra shoot and fruit borer, Earias vittella (Fab.) under field condition in Konkan region during summer 2016 and 2017 at RARS, Karjat. There were eight varieties viz., ArkaAnamika, Akola 10, Akola Bahar, PhuleUtakarsh, GOA-5, ParbhaniKranti, Panjab, Padmini, and VarshaUpahar (as a check) were screened for their relative susceptibility to okra shoot and fruit borer under field conditions. Among the eight genotypes/varieties of okra, none of the cultivars was found to be free from pest infestation in the year 2016 and 2017.

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The present investigation entitles “Population dynamics shoot and fruit borer Earias vitella of okra, Abelmoschus esculentus (L.) Moench during kharif 2016.’’ cultivar komal conducted during August, to November, 2016 at field of Entomology SHUATS Allahabad. The occurrence of shoot and fruit borer (Earias vittella) in 2016 kharif season was commenced from 36th standard week with an average 2.758 % infestation.

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A field experiment was conducted to study the bio efficacy of seven plant extracts viz., neem oil 0.3%, neem seed kernel extract 5%, azadirachtin 0.15 EC 0.0006%, Aloe vera extract 1%, Citrulluscolo cynthis leaf extract 1%, garlic bulb extract 3% and neem leaf extract 10% against fruit borers during summer and kharif, 2016 at Main Vegetable Research Station, Anand Agricultural University, Anand (Gujarat).

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A field experiment was conducted during the Kharif seasons 2012 and 2013 at Students Instructional Farm and Vegetable Research Farm, NDUA&T, Kumarganj, Faizabad (UP) to find out the natural enemies of shoot and fruit borer in okra. The eggs parasitoids Trichogramma chilonis, parasitized 6.25 and 7.40% egg of Earias spp Kharif, 2012 and Kharif, 2012 respectively. Among predators, maximum population of Coccinellids 4.36 and 4.05 adult per 5 plants was recorded in third week of August.

6p cothumenhmong4 25-03-2020 7 1   Download

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