Effect of neem kernal aqueous extract (NKAE) in Tea Mosquito Bug, Helopeltis theivora (Waterhouse, 1886) (Heteroptera: Miridae)

Abstract :

Aqueous extract of neem seed kernel (NKAE) was tested in laboratory condition to evaluate its antifeedant, ovicidal, nymphl duration and hatching performance on tea mosquito bug (Helopeltis theivora).Different concentrations of NKAE used were 1,2,3,4and 5%. In F1 population NKAE was significantly superior in antifeedant activity, hatching percentage ,oviposition period and nymphal duration @ 5% (248.2), (50%) , (8days) (5 day in 4th inster). The number of eggs laid by female was significantly less in 5% (23.33 Nos.) compared to other treatments

Keyword :

Antifeedant, Ovicidal, Helopeltis theivora

Author(s) : Dutta, P., Reddy, S. G. E., Borthakur, B. K.
Downloads : 1831
Published Issue : 2013 Vol. 8 Number 1

2013 Vol. 8 Number 1