Abstract
mealybug pests, there are many in the United States, and damage to crops of farmers. Thus, most farmers had to turn to pesticides. Which is filled with chemicals that are harmful to ourselves and the environment. The bulk of research and study, I have to question the wisdom of the people in the community found in wild yam extract one. The effect was to get rid of mealy bugs. It's a group I am very interested in doing project subject. "Liquid insecticides yam" which compares the performance of me getting rid of mealy bug during a dried yam and yam extract derived from fresh. The mealy bugs, aphids tested as in Dan Chang. Suphanburi And in front of Tower 1 Then, the yam, cut into small pieces to obtain 250 g split beaker 5 leaves and 50 grams of water measuring 100 cubic centimeters, then pour it into a beaker. Remove the beaker at first slip. Place in vibrating machine, ultrasonic France at 70 ° for 5 minutes, leaves the second set for 10 minutes, the 3rd placed for 15 minutes, the 4th placed for 20 minutes and leaves fifth place. On a normal temperature for 20 minutes and then put to the test. Yam, cut into thin slices Bring to a temperature of 70 degrees and then ground into a fine powder, mixed with water and then put to the test. Then compare Found that an extract made from yam Live effective in getting rid of mealybugs better type drying was 13.34% for the ultrasonic switch to extract extract the float out over the introduction of yam dried. dried When put to the test with mealybugs, thus effectively get rid of aphids better.
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