The objectives of this study were: 1) to analyze contributing factors affecting selection of optimal vegetable
yield distribution channels in keeping with good agricultural practice (GAP) standards, and 2) to find the relations of
contributing factors affecting the selection of each channel for distributing GAP vegetable yield. A sample used in
study was 166 households whose occupation was GAP vegetable farmers in Chiang Mai province. The instrument
used was an open-ended and close-ended questionnaire with a rating scale as well as a check list. The entire
reliability coefficient of the questionnaire according to Cronbach’s was 0.80.The study was analyzed by means of
factor analysis on contributing factors and multinomial logit model.
Findings of the study revealed as follows. The contributing factors affecting selection of a distribution channel
consisted of institution, economics, and farmer characteristics. 2) The contributing factors of an access to receiving
service of production knowledge for farmers and of an increase in other agricultural income would increase the
opportunities for the sale of the royal project or the processing company. Similarly, the adequacy of funding sources
for loans as well as the amount of loans for GAP vegetable production, the increase in the number of household
workers, and the ability to produce GAP vegetables among experienced and educated farmers would increase sales
opportunities in department stores and non-toxic flea markets. Furthermore, the adequacy of funding sources for
producing GAP vegetables as well as the amount of loans, and the increasing total income from sources outside
agriculture, thus increased sales opportunities in the local market. However, changing in adequacy of funding sources
and the loan amount for GAP vegetable production, increasing the total income from sources outside agriculture,
increasing the household workers, and earning their own income among aging farmers’ households turned out to
reduce the opportunities to sell in the royal project channel or the processing company. Likewise, changing in receiving
service of production knowledge for farmers and increasing in income from sources outside agriculture, turned out
to reduce the opportunities to sell in the local market. Hence, the contributing factors that increased the distribution
opportunities should be maintained, while the contributing factors that decreased the distribution opportunities
should be maintained, while the contributing factors that decreased the distribution opportunities must be improved in order to bring to a competitive advantage.