Research on insect pests of cool-season food legumes
1993
Kemal Ali (Institute of Agricultural Research, Addis Abeba (Ethiopia)) | Tibebu Habtewold
The cool-season food legumes are attacked by over 20 species of insect pests, but only a few are of economic importance. Pea aphid (Acyrthosiphon pisum), African bollworm (Helicoverpa armigera) and bean bruchid (Callosobruchus chinensis) have been the subject of research in Ethiopia. This paper reviews the work done for the control of these species, including insecticide screening trails to evaluate chemical control. Successful control of key insect pests has been achieved with a range of insecticides including botanicals. Some aspects of the biology and population dynamics have been studied for the most economically important species of insects and studies of economic threshold levels have been conducted for pea aphid on field pea and lentil. The influence of cultural practices on aphids and bollworm also has been investigated. Research on host resistance in field pea and lentils has been restricted to pea aphid. A few genotypes having some degree of tolerance have been identified. Future research should include surveys, monitoring, and studies on the population dynamics of these key pests, with the aim of developing effective integrated pest management.
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