Field Evaluation of Botanicals on Pest Complex of Solanum nigrum Linn.

摘要

Field experiments were carried out in farmer's holdings at Coimbatore and Tirupur districts of Tamil Nadu during June, 2012 to September, 2012 to assess the efficacy of botanical pesticides against sucking pests and defoliators infesting Solanum nigrum. Foliar application of profenophos @ 2 ml per litre was effective against sucking pests as well as defoliators with maximum leaf yield of 22.40 kg/12m~2 harvest as against 11.45 kg/12m~2 harvest in untreated control. Azadirachtin one per cent and aqueous leaf extract of Andrographis paniculata 2% recorded maximum reduction in pest population and also conserved more number of predatory coccinellids.