Abstracts Lemon is one of the economically important plants in the local market and jicama plant is an important economic district of Maha sarakham in the jicama seeds, borabue, Chang WAT are toxic to other animals which the worm is considered a type of pest damage the lime trees. So the Manager has experimented by removing the seeds, jicama for extraction by using three kinds of solvents, ethanol, hexane and water volume 500 ml per 50 g jicama seeds found that hexane extraction of active compounds from the seed Yam root best. Afterward, leading to volatile substance filter in Water Bath so that the hexane evaporates completely. When a substance can then be tested to get rid of the worms in the lemon tree. Found that the extracts have concentrated 1000 ppm when using the average worm removal injection 06.07 min.
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