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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Denitrification Power of the Flooded Rungsit Very Acid Soil )

ผู้เขียน:Imgนายสมศักดิ์ วังใน, รองศาสตราจารย์, ImgVithaya Thananusone, ImgPitayakorn Limtong



A study was conducted by addition of ammonium and nitrate fertilizers into the Rangsit very acid soil, the soil was flooded, the rice seedlings were transplanted, and denitrification activity including ammonium and nitrate contents were followed. Results revealed that denitrifying microorganisms, in both ammonium and nitrate fertilized soil, increased rapidly and reached their peaks approximately 3 to 4 weeks after submergence. Approximately 1/7 of the added ammonium was transformed to nitrate, of this 71 percent (or 10 percent of the ammonium nitrogen added) was lost via nitrification-denitrification sequence. Eighty four percent of nitrate (or 86 percent of the nitrate nitrogen added) was denitrified and lost from the nitrate-treated soil. The rice yield obtained from the ammonium treated soil was significantly higher than that nitrate treated soil.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 012, Issue 2, Jul 78 - Dec 78, Page 109 - 113 |  PDF |  Page