Survey of Bean Pod Borer (Maruca testulalis), Whitefly and Aphids and their Natural Enemies on Country Bean (Lablab purpureus)
BARI (Bangladesh); Penn State, Virginia Tech (US)
Mozammal Hoque, Selim Reza Mollik, M. Nazimuddin, S. N. Alam, M. Khorsheduzzaman (BARI), H. S.Jasmine, Nazneen A. Sultana, Mahbubur Rahman, Bahauddin Ahmed (IPM CRSP/Virginia Tech), E. Rajotte (Penn State), and G. Luther (Virginia Tech)
The bean pod borer, whitefly and aphids have appeared as serious pests of country beans in Bangladesh. The bean pod borer and aphids damage the bean pods directly, while whitefly acts as a transmitter of virus diseases. To control the pests, farmers apply poisonous insecticides indiscriminately without success and this practice has led to a serious issue of potential hazards to human health and the environment. A baseline survey on population dynamics of these pests and their natural enemies through this project was designed to help to develop researchable issues for employing suitable control measures that can minimize pesticide use.
To obtain baseline information on the population dynamics of bean pod borer, whitefly and aphids and their natural enemies on bean crops and identify necessary researchable issues to develop IPM practices.
Researchers found that the bean pod borer (Maruca testulalis) is a damaging pest in country bean crops is evident from fairly high infestation levels, particularly in Jessore area. The farmers, in order to control the pest through indiscriminate pesticide use, have evidently complicated the management of the pest that has seriously hindered the natural control systems of the natural enemies and probably has caused rise of other pests like the whitefly and aphids. Lower pest infestations in fields that received no pesticide applications indicate that a biological control strategy will be more suitable to solve pest problems in country bean crops.