EFFECT OF BIOPESTICIDS IN CONTROLLING LEAF CURL VIRUS OF CHILLI

K. M. Khalequzzaman, Samima Naznin, Abul Khair

Abstract


The experiment was conducted in the field laboratory of Spices Research Center, BARI, Shibganj, Bogra, Bangladesh during Rabi season of 2014-15 to find out the effect of biopesticides in controlling vector as well as leaf curl virus of chilli. The maximum infected plants (26.85%) were recorded in untreated control and the minimum infected plants (14.75%) were in Malathion (0.2%) which was statistically identical to all other biopesticides except cow urine (1:2). The highest disease reduction (45.13%) over untreated control was obtained from Malathion (0.2%) followed by cow urine (1:1) and neem leaf extract (1:2), and the lowest (26.37%) was obtained from cow milk (1:2). The highest yield (18.33 t/ha) was recorded in Malathion (0.2%) and the lowest (11.28 t/ha) was recorded in untreated control. All the biopesticides resulted least disease incidence and more yield compared to control. Among the biopesticides, cow urine (1:1), cow milk (1:1) and neem extract (1:2) showed comparatively better results against control. So, Melathion or biopesticides, cow urine (1:1), cow milk (1:1) and neem leaf extract (1:2) may be sprayed for controlling vector as well as leaf curl virus and increasing yield of chilli. 


Keywords


Malathion, cow milk, cow urine, neem leaf extract, leaf curl virus, chilli

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DOI: http://dx.doi.org/10.18034/apjee.v3i1.875

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