K. M. Khalequzzaman, Samima Naznin, Abul Khair


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. 


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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