Back C. C. Myint
Institute of Agriculture, Yezin, Pyinmana, The Union of Myanmar
Full Paper (PDF File: 412KB)
Abstract
The effects of organic amendments, Effective Microorganisms (EM) and chemical
fertilizers on consecutive rice plantings were studied in 1991. The use
of Sesbania rostrata as a green manure was a promising substitute for nitrogen
fertilizer in rice production. Rice straw treatments produced significantly
lower yields than those of chemical fertilizers because of microbial immobilization
of inorganic soil nitrogen. However, experimental results suggested that
addition of EM enhanced the decomposition of rice straw and minimized the
immobilization of soil nitrogen. Hence, EM provided a potential advantage
for ensuring the availability of soil nitrogen for the rice crop when it
was added to soil amended with locally-available organic matter such as
comparatively low-cost rice straw.