Fish farming for saline soil management in Khon Kaen Province, Thailand
Saline soil management technology for maximum utilization and efficiency through fish farming by Mr. Sompong Chaisong was applied at 171, Village No. 9, Ban Nong Nang Khwan Mueang Pia Subdistrict, Ban Phai District, Khon Kaen Province. The goal of this method is to productively farm in places with saline soil. Previously, the land was mostly utilized for rice farming, but the yield was of poor quality in terms of flavor and texture, as well as quantity. It generated income of only 4,000 baht per rai in a year which was not worth the investment. Farmers earned 40,000-50,000 baht per pond/cycle after altering and adapting technology to tilapia and snapper farming, which was well worth the investment and required significantly less labour than rice production. In 2013, Mr. Sompong Chaisong, was selected to be the chairman of the Ban Nong Nang Khwan Fish Farmers Network Group. The Objectives of action are to reduce, prevent, restore, soil degradation in saline soil area and to improve agricultural productivity in saline soil to be more diverse and sustainable agriculture.
Fish farming is a close system for Mr. Sompong Chaisong. Water will not be released from the fish pond to the outside, but it will be circulated around the farm. He would pump outside water into the ponds around 2-3 times a year once the water in the fish pond drained and decreased, but rainwater provided the majority of the water. Make a large and high embankment around the fish farming area to prevent saline water from outside seeping into the fish pond and spreading soil salinity. This technology has no serious impact on the environment or the local communities. Plants along the pond's edge include salt-tolerant perennials like coconut and tamarind, which are consumed in the home and to simply prevent soil erosion by holding the dirt on the embankment. Furthermore, it aids in keeping the soil surface moist at all times. It also prevents salt from moving from the bottom layers to the soil surface. Farmers who took part in the program and put the technology to work were pleased because they were able to produce high-quality agricultural products while still earning a steady income. Soil deterioration is also controlled by this technology. The water in the area used to be 9-10 ppt salinity, but it is now 3-4 ppt, resulting in a decrease in soil salinity.