Abstract:
Hemipterans insect pests such as green leafhopper and rice black bug a serious problem in the rice field in the Philippines. A study on botanical extracts was conducted to explore its potentials as natural insecticides for the control of hemipterans insect pests. The study carried out in Complete Randomized Design (CRD) with six treatments replicated three times. All data were subjected to Analysis of Variance (ANOVA) and Tukey's Honest Significant Difference (HSD) Test as a mean comparison using statistical tools for agriculture research (STAR) software. Derris roots, neem leaves compound, and thiamethoxam application offered effective control against GLH as reflected by a higher percentage of mortality. Derris roots alone, 50% control efficacy against rice black bug. A compound from lantana leaf offered a toxic-insecticidal effect against rice black bug with 36.67% survival and 63.33% mortality rate. Hence, it is interesting to note that compound from Derris roots applied at the rate of 20 ml for 10- 30 hours offered toxic effect while compound from Lantana leaves effectively controlled rice bug at 10, 20, 30, 40, and 50 hours.
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