The Northeastern region, especially “Thung Kula Ronghai”, is one of the best quality jasmine rice cultivation areas in Thailand. The Warehouse Organization (DOE) has selected the best quality authentic jasmine rice from the Northeastern region of Thailand in 5 provinces, namely, the area of ​​Thung Kula Ronghai, which is a common image of a basin area consisting of provinces in the Northeast. All 5 provinces. The general area of ​​this Thung Kula There will be a Mun River flowing through the southern part of the field, flowing through Surin Province, passing Tha Tum District, and separating the provinces of Surin and Roi Et from each other at Rattanaburi District, Surin Province and Phon Sai District, Roi Et Province, as a natural demarcation line through Rasi Salai District. Sisaket Province, the central part of Thung Kula, will have branch rivers flowing through such as River Siew, Lam Phlapphla, Lam Nam Tao, etc. The total area of ​​Thung Kula Ronghai is approximately 2,107,690 rai, in the area of ​​the following provinces: 1. Roi Et Province, approximately 986,807 rai 2. Surin Province, approximately 575,993 rai 3. Sornsaket Province, approximately 287,000 rai in the area of ​​Roi Et Province