Helban: a biological insecticide

Nirmal Seeds Ltd., Pachora has introduces Helban, the biological insecticide which works on the principle of IPM. Nuclear Polyhydrosis Virus (NPV) has been effectively used to eliminate Helocovarsha armiyera commonly called as American Pod Borer.

Herlban has been effective on gram, cotton, tomato, etc. The NPV virus being harmless to mammals, fishes, birds, silk worms and other useful parasites is effectively used to kill caterpillars on various crops. Caterpillars feeding on sprayed crop is infected with virus through digestive system and spreads all over the body killing small caterpillars within span of 3-4 days and big ones in 7-10 days. 1000 LE per ha NPV should be used to get the desired results. It should be spread immediately on spotting the caterpillars. Second spraying should be done at an interval of 7 –10 days. Spraying should be done in early hours of the day or in the afternoon. Cloudy atmosphere is also suitable for spraying.

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