Field Evaluation of Virtako 2.4 DT an insecticidal tablet against certain key pests on rice
G Balamurugan, V Suhasini, S Arivudainambi
Application of Virtako 2.4 DT @ 2.5 kg/ha at 20 days after transplantation of rice was found effective in reducing green leafhopper (Nephotettix virescens), stem borer (Scirpophaga incertulas), leaf folder (Cnaphalocrocis medinalis) and brown plant hopper (Nilaparvata lugens) and recorded 1.80 hill-1, 1.83% white ear, 3.47% leaf damage and 0.99 hill-1 respectively as compared with untreated check where 9.33 hill-1, 16.66% white ear, 15.42% leaf damage and 7.66 hill-1 were seen. There was no reduction in the natural enemies population in the field and no phytotoxicity recorded. The treatment with Virtako 2.4 DT @ 2.5 kg/ha recorded the highest rice grain yield of 4.53 t ha-1 as compared to untreated check 2.23 t ha-1.