[Anthropoda population, plant damages, pod quantity and soybean seed quality, produced in integrated pest control trial plots vs conventional trial plots]
1996
Sudarsono, H. (Universitas Lampung, Bandar Lampung (Indonesia). Fakultas Pertanian)
A field experiment was conducted in a Central Lampung soybean field to study the impact of different insect control techniques (approaches) on number of arthropods, diversity of arthropod community, number of insect pests, number of natural enemies (parasites and predators), level of leaf damage, quantity of healthy pods, and dry weight of soybean seeds. Four different insect control techniques were examined during the study, i.e. (1) conventional technique or farmers' technique (intensively treated with insecticides), (2) IPM technique, (3) intercropping technique, and (4) no insecticide or no insect control. Results of the experiment indicate that the farmers' plots (plots intensively treated with insecticides) consistently had lower diversity index compared to the three other plots. Similar results were recorded on the variables of the number of insect pests and natural enemies. Eventhough leaf damage on intensively treated plots were consistently lower than that of IPM plots, the number of healthy pods and the dry weight of soybean seeds between the two plots were not significantly different. These results suggest that intensive treatment with insecticides for soybean plots were unnecessary
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