Abstract
.There are a lot of aphids are pests in Thailand and damage to the fruit of the farmers. So most of the farmers have resorted to pesticides.The group then went to study research and inquire the wisdom of the people in the community, it was found that in the extracted species of yam Effects can get rid of aphids."Chemical insecticides from yam." A group of I will compare the removal efficiency of mealybugs between yam by drying and extracts from a live yam The aphids, thrips are tested in Dan Chang District.In front of the tower, and 1 After the yam to cut into small pieces to 250 g, divided into a beaker 5 leaf leaves each 50 g measure water 100 cc cool put into each beaker. The beaker 1 leaves.70 degrees for 5 minutes leaves 2 placed for 10 minutes leaves 3 placed for 15 minutes leaves 4 placed a time 20 minutes and leaf area 5 placed on normal temperature for 20 minutes and put it to the test. Shredded yam thin slices.70 degrees and were crushed into fine powder, and mixed with water, and then tested and compared. Found that the extract of fresh yam efficiencies of aphids, better type dryer แห้งอยู่ 13.Because the machine 34% ultra โซนิ x can pull in yam extract out instead of yam ไปอบ dry. When tested with aphids, the removal efficiency is better than the aphid
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