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Okra (Abelmoschus esculentus L.) is susceptible to number of diseases like Yellow Vein Mosaic Virus
disease, Damping Off, Fusarium wilt, Powdery Mildew and Enation Leaf Curl. The Okra is favorite host
of whitefly which transmits the okra Yellow Vein Mosaic Virus (OYVMV). OYVMV disease causes
considerable yield losses in Okra. Experiment was conducted to check the efficacy of organic matter
(poultry manure, leaves) and insecticides (Acetamiprid, Diafenthiuron, Pyridine Carboxamide) against
OYVMV and its whitefly vector. In this experiment, ten okra varieties were sown in randomized
complete block design (RCBD). Organic matter and insecticides were applied at recommended doses
(@5ml/L) on weekly intervals. Among insecticides, Acetamiprid showed the best result to manage
whitefly infestation with 60.01% mortality and OYVMV disease severity with 53.98% efficiency. Polo
(Diafenthiuron) also showed good results to manage whitefly (56.36%) and OYVMVD (46.34%), but
Ulala (Pyridine Carboxamide) insecticide was least effective to control whitefly population (47.27%)
and to manage the infection of OYVMV disease (43.91%). Leaf manure was more effective with
61.16% efficiency as compared to poultry manure (56.01%) against OYVMV disease severity. New
chemistry insecticide (acetamiprid) gave the most effective control of whitefly and transmission of
OYVMV and could be used in place of conventional insecticides. Leaf manure proved significant
defense activator in okra plants with effective control of disease and could be used as eco-friendly
management approach.
A. Munir, S. Ali, M. A. Zeshan, M. U. Ghani, A. A. Khan. (2020) EVALUATION OF ORGANIC AMENDMENTS AND INSECTICIDES AGAINST OKRA YELLOW VEIN MOSAIC VIRUS AND ITS VECTOR, Pakistan Journal of Agriculture, Agriculture Engineering & Veterinary Sciences, Volume 36, Issue 1.
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