| Rice production potential zoning in Samutsakhon, Samutprakhran and Samutsongkhram provinces was conducted in wet season 2010. Research methodology consisted of general rice production information collection, soil sampling and crop cutting from farmer field, field experiment, mapping of rice zoning. The study showed that the two crops of recommended rice varieties with transplanting were common practice in this area. Insect pest and diseases were controlled by chemical application. The compound fertilizer of 16-20-0 N-P2O5-K2O and 16-8-4 N-P2O5-K2O were applied depending on extractable potassium in the area. Field experiment indicated that rice yield of R3 level (550-700 kg/rai) could be increased to be R2 level (701-850 kg/rai) by using appropriate... |
