1.	Study on Spacing of Eastern Cylinder as Subirrigation for Baby corn Planting in Sandy Soil
2.	Study on Spacing of Eastern Cylinder as Subirrigation for Tomato Planting in Sandy Soil
3.	Skeletal Soil Improvement by Mulching and Subirrigation with Earthen Cylinder for Sweet Tamarind Production
4.	Effect of Chemical and Organic Fertilizer Application to Acacia mangium Willd. Plant at Different Spaces on TIn Mine Tailing Land
5.	Improvement of Sandy Soil by Organic and Chemical Fertilezers for Kopok Production
6.	Soil Improvement (Ubon series) for Upland Rice
7.	Improvement (Nampong series) by Ruzi and Verano with Chemical Fertilizer
8.	Effect of Chemical Fertilizer on Growth and Soil improvement of Acacia mangium in Nampong Sandy Soil