1Department of Plant Protection, Hamelmalo Agricultural College, P.O. Box 397, Hamelmalo, Keren, Eritrea
2Syed Danish Yaseen Naqvi, Department of Agriculture, Mangalyatan University, Beswan, Aligarh
The experiment conducted at Shelshela, sub-region Shieb – Eritrea during November 2015 to February 2016 showed that the use of fenitrothion 96 per cent ULV and chlorpyrifos 45 per cent ULV to control locust led to significant reduction in arthropod population after 48 hrs of post-spray than the control plot. The fenitrothion treated plots generally showed more reduction in population count than chlorpyrifos. Fenitrothion treated plots recorded maximum reduction (89%) of formicids population. Whereas, chlorpyriphos recorded the lowest of carabids (52%). Population count of Gryllidae and Tenebrionidae showed slight improvement after a month of spray than others. Generally, a population reduction of 86.2 per cent in fenitrothion and 81.1 per cent in chlorpyrifos was recorded in first post-spray count of D3 as compared to pre-spray counts of D1 and D2. From the study it is also observed that Formicidae and Gryllidae can be used as bio-indicators during insecticide control of desert locust in the study areas.
Fenitrothion, Chlorpyrifos, Non-targeted arthropods, Desert Locust, Bio-indicator
