Abstract
Abstract Nineteen insecticides applied as seed treatments at 10 g aiAg seed were tested at IRRI (Los Banos, Laguna, Philippines) for control of preflowering mung bean insect pests. Mung bean seeds (33 kg/ha) were agitated in a plastic bag with each insecticide and 25% gum arable before sowing to 5-m2 plots in a randomized complete block design with 3 replications on Mar 10. The Santa Rita series soil (clayey amorphos isohyperthermic Typic Hapludolls), pH = 6.5, 52% pore space, 2.7% organic matter, 34% clay, 36% silt, 30% sand, averaged 37° and 28°C for daily maximum and minimum temperatures at 5 cm depth, respectively, the first 14 days after sowing. There was no rainfall during this dry season trial, but the plots were irrigated with overhead sprinklers. In each plot at 21 days after crop emergence, 20 random plants were dissected for evidence of beanfly damage and 20 leaf buds were removed from random plants, placed in 70% ethyl alcohol for counting thrips under a stereoscope.
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