Abstract:
The study of some suitable agricultural crop models for Chom Bueng District,Rajburi Province by using the application of geographic information system is conducted. Thepurpose of this study is to present alternative and suitable h i t crop models for the farmers incassava production areas. The study is divided into two main parts. In the fmt study, a multicriteria evaluation using physical, biological, economical, and social factors is considered for theselection of suitable h i t crops. Farmers' opinion, socio-economic, physical, and croprequirement factors are also criticized. In the second study, ARC/INFO version 6.0 is used tooverlay the suitable area for the appropriate crops as area approach system. The results of thefmt study show that there are 12 most suitable crops which are pommelo, mango, longan, lychee,guava, banana, coconut, jack fruit , tamarind, manila tamarind, santol, and sugar apple. In thessecond study, it is found that the total area of Chom Bueng District is 510,160.30 rai. The soilseries consist of 32 soil types of classification covering the whole area. Most of the land area areflat and consist of sandy loam, have good drainage, low fertility, and medium pH (5.5-7,0), soildepth between 25-75 centimeters, and ground water level of 120 centimeters. Furthermore, mostof the agricultural land area could be divided into two categories. The first category is themoderate suitable area for pommelo, manila tamarind, santol, mango, guava, banana, tamarind,jack fruit , coconut, and sugar apple. The second category is slightly suitable area for lychee andlongan. The cassava production area is 22,032 rai located mostly in Chom Bueng Subdistrict.The cassava production area has the same crop suitability as that of the whole agricultural landarea which is moderately suitable for pornrnelo, manila tamarind, santol, mango, guava, banana,tamarind, jack fruit , coconut, and sugar apple and slightly suitable areas are for lychee andlongan.