| Rice is a major food crop and cash crop in Thailand. In 2011, average rice production in Thailand was about 460 kg per rai, which is considered as low productivity comparing with other countries (Rice Department, 2554). The reasons relate to various factors affecting production such as soil condition, weather condition, irrigation, and farmer managements in each area. The objective of this study is to investigate the deep relationships between quantitative inputs and rice production by an agricultural model (WaNuLCAS model) as a tool for analysis of their relationships. In this study, 9 districts of Phitsanulok province are considered. The areas of study are divided into external and internal irrigation. Within this research, we have created database of... |
