Search Result of "Somboon Mankarmde"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Organic Wate Materials on Dynamics of Nitrogen in Submerged Paddy Soils)

ผู้เขียน:ImgSomboon Mankarmde, Imgดร.จงรักษ์ จันทร์เจริญสุข, รองศาสตราจารย์, Imgนายสรสิทธิ์ วัชโรทยาน, ศาสตราจารย์, ImgHidenori Wada



Studies on the effects of organic waste materials (OWhl) on dynamics of nitrogen in Rangsit and Roiet paddy soils were conducted. OWM examined were rice straw compost (RSC), activated sludge (AS), whisky sludge (SW), filter cake (FC) and caster meal (CM). OWM increased NHicontent in paddy soils. The amount of N released from OWM was partly controlled by CIN ratio. The increasing order in the amount of the released N correspond to the decreasing order of CIN ratio. Time course of NHlformation varied among OWM and also between the two type of soils. OWM were classified into three group according to their time course of NHiformation : (1) slow release, RSC, FC (2) rapid release, AS, SW and (3) delayed rapid release, CM. The rate of NH; release in Rangsit soil amended with OWM was slower than that in Roiet soils. Nitrogen uptake by the rice plant was found to be correlated with N release in the soils and rice yield. OWM especially FC increased pH of the soils. Application of OWM enhanced reduction state of the paddy soils.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 019, Issue 2, May 85 - Aug 85, Page 92 - 99 |  PDF |  Page