...added expenses not to mention the bad effects of these chemicals to health and environment. Dr. Alfredo R. Rabena, head of the Research and Development Office of the University of Northern Philippines in Vigan City, Ilocos, has discovered a solution. He found that the leaves of kakawate tree or Mexican Lilac (Glinicidia sepium) contains coumarins, an effective botanopesticide. To prepare the solution, chop the kakawate leaves and let these soak overnight to extract coumarins. Using a strainer, separate the leaves from the solution. Spray the solution to the ricefields. The best time to apply it is from eight o’ clock to nine o’clock in the morning and from five o’clock to six o’clock in the afternoon as worms and pests are coming out from the leaves at these times. So the solution would be more effective to use. If applied early, it wouldn’t be that effective as pests are still hibernating. And if used when the sun’s heat is too hot, it wouldn’t be that effective also as pest would hide. Since kakawate is a legume, says Rabena, its leaves are rich in nitrogen, an important soil nutrient. Hence, the discarded leaves can be applied to the field as an organic fertilizer. He also recommends fanners to put several leafy branches of kakawate tree in between rice plants two days after planting to prevent pests from attacking the crop. To prove this research finding, Rabena and Flora Cely Rodilias did a demonstration in Naglaoa-an, Sto. Domingo, Ilocus Sur as well as in Vigan City and...
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