Insect pest management in food legumes: The future strategies uri icon

abstract

  • Food legumes such as chickpea, pigeonpea, cowpea, field pea, lentil, faba bean, blackgram,greengram, grasspea, and Phaseolus beans play an important role in the daily diets of peoplf1worldwide. These crops are damaged by a large number of insect pests, of which podborers, Helicoverpa armigera and H. punctigera; spotted pod borer, Maruca vitrata; spinypod borer, Etiella zinckenella; pod fly, Melanagromyza obtusa; leaf miner, Liriomyzacicerina; stem fly, Ophiomyia phaseoli; pea and bean weevil, Sitona spp.; aphids, Aphiscraccivora, Aphis fabae, and Acyrthosiphon pisum; white fly, Bemisia tabaci; defoliators,Spodoptera litura, S. exigua, and Amsacta spp.; leafhoppers, Empoasca spp., thrips,Megaleurothrips dorsalis, and Caliothrips indicus; blister beetles, Mylabris spp.; and thebruchids, Collasobruchus chinensis and Bruchus pisorum cause extensive losses worldwide.Because of development of resistance to insecticides in several insect species, there is a need to integrate different control tactics. Sources of resistance to insects in grain legumeshave been identified, but these have not been used effectively in crop improvement. Thereis a need to place greater emphasis on utilization of wild relatives of crops with differentresistance mecharusms, genetic engineering of plants for insect resistance, and identificatiorlof molecular markers associated with resistance to insect pests. Cultural manipulation of thecrop and its environment, population monitoring and pest forecasting, manipulation of thecrop environment to encourage the activity of natural enemies, use of natural plant productsand bio-pesticides alone or in combination with synthetic pesticides, deployment of insectresistantvarieties derived through conventional breeding, wide hybridization, or geneticengineering, and rational use of selective chemicals can be exploited for pest management infood legumes

publication date

  • 2005