Rati Gon (2543 (2000)) study Knowledge and practice in the use of chemicals to agricultural production of small farmers in Amphoe hang chat, Lampang. Results from the study showed that every farmer household medicines kill plant diseases and gain information about the use of pests at the eradication of drugs, chemicals or agricultural cooperative store. Knowledge and practice in the use of chemicals to agricultural production, the variable cannot be found with the statistical relationship with knowledge and practice in the use of chemicals to agricultural production of the farmers. Problems and difficulties of the farmers in the use of protective chemicals to get rid of pests that have the problem with expensive chemicals. The problem with disease and pest resistant chemicals. The problem with wearing protective outfits, it deserves to be trained on using the chemicals correctly and safely to farmers. Suggestion on the research of public and private agencies are involved, training should be provided to convey knowledge about the use of pests pest protection chemicals properly and safely to farmers and agricultural cooperatives or chemicals.
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