[Identification of integrated pest control of soybean]
1990
Marwoto (Balai Penelitian Tanaman Pangan Malang (Indonesia))
Till present, pests of soybean usually are controlled by insecticide application, because other pest management strategies, such as the use of resistant varieties and biological control, are not yet available. As pesticides have become expensive and as pesticides have negative side effects, other ways of soybean pest management have to be found. In 1989, the use of chemical control combined with the use of biological insecticide and trapcrops was studied at sub station Mojosari, Mojokerto during dry season. Results were: leaffolder population Hedylepta was low so the effect of the treatments on this pest did not become clear. Leaf beetle Phaedonia inclusa and stemboring beanfly Melanogromyza sojae could only be controlled chemically, biological insecticide and trapcrops was not effective. Pod damaging pest populations were low and no significant difference was found in the treatment effect on the pod borers and suckers. The treatments which included trapcrops yielded not significantly different from the non sprayed check. Full protection yielded best: 1.79 t/ha. Yield under supervised control was not significantly different from yield under full protection but only three sprays were required while full protection was six sprays.
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