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Changes in Physicaochemical Properties of Soil, Yield, and Milling Quality of Rice Grown under the Long-term No-till Rice System  

홍광표 (경상남도농업기술원)
김영광 (경상남도농업기술원)
정완규 (경상남도농업기술원)
손길만 (경상남도농업기술원)
송근우 (경상남도농업기술원)
최용조 (경상남도농업기술원)
최진용 (경상대학교 농업생명과학대학 농학과)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.48, no.3, 2003 , pp. 196-199 More about this Journal
Abstract
This experiment was conducted to evaluate the differences in physicochemical properties of soil, grain yield and milling recovery ratio and grain appearance of rice grown in long-term no-till and ordinary till systems. The paddy in no-till rice system was unploughed but straw-mulched for 15 years from 1988 to 2002 at the Experimental Paddy of Gyeongnam Agricultural Research and Extension Services, while the paddy in ordinary till system was ploughed and puddled every crop year, A 5cm organic layer was formed in 11-year no-till rice system, in which exchangeable cation and phosphate were accumulated. In no-till paddy organic matter, bulk density and solid phase of surface soil significantly increased, while pH, exchangeable cation, phosphate, liquid and gaseous phase decreased. Tillage made the very top soil soft, but made deep soil below 5cm significantly hard. In the 1st year of no-till, topsoil showed hard, but in the process of the time in no-till system, the top- and sub-soil showed softer, Yield and yield components of rice showed no differences between till- and no-till rice systems. Milling recovery ratio and grain appearance were not significantly different between no-till and till-rice systems.
Keywords
Rice; No-till paddy; Soil property; Organic matter; Milling recovery; Grain appearances; Yield;
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Times Cited By KSCI : 1  (Citation Analysis)
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