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http://dx.doi.org/10.17137/Korrae.2014.22.4.072

Effect of Mulching with Easily-Decomposable Organic Materials on the Rice Growth and Earthworm Ecology Characteristics in Paddy Fields  

Nam, Hong-Shik (National Academy of Agricultural Science, Rural Development Administration)
Lee, Sang-Beom (National Academy of Agricultural Science, Rural Development Administration)
Park, Kwang-Lai (National Academy of Agricultural Science, Rural Development Administration)
Hong, Seung-Gil (National Academy of Agricultural Science, Rural Development Administration)
Kang, Chung-Kil (National Academy of Agricultural Science, Rural Development Administration)
Son, Jin-Kwan (National Academy of Agricultural Science, Rural Development Administration)
Kim, Seok-Cheol (National Academy of Agricultural Science, Rural Development Administration)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.22, no.4, 2014 , pp. 72-86 More about this Journal
Abstract
This study was conducted to investigate the effects of mulching of easily-decomposable organic materials including rice powder and corn starch on rice paddy fields. The treatments were including seven mulching materials each consisted of rice powder [Rice], starch with black color [Starch-B] and transparent [Starch-T] and stone powder [Stone], and conventional vinyl [Conventional], no-mulching without herbicide [Control-O] and no-mulching with herbicide [Control-C]. Rice growth and yield were different among the treatments; the highest yields were observed for [Rice] ($6.51ton\;ha^{-1}$) and [Conventional] ($6.47ton\;ha^{-1}$) followed by [Starch-T] ($6.25ton\;ha^{-1}$) and [Stone] ($6.20ton\;ha^{-1}$) which is comparable to the [Control-C] ($6.15ton\;ha^{-1}$). However, [Starch-B] showed lower rice yield ($4.93ton\;ha^{-1}$) than the [Conventional] or [Control-C]. Mean soil temperature ranged form 23.6 to $24.1^{\circ}C$ with the highest temperature for [Rice] treatment, and cumulative soil temperature was also significantly higher in the [Rice] treatment. Among the soil parameters, electrical conductivity, organic matter content, and phosphorus concentration were also different among the treatments. The amount of earthworm casting was higher for [Rice] treatment ($17.7kg\;m^{-2}$) compared to the others ($5.5{\sim}9.8kg\;m^{-2}$). It was suggested that mulching of rice fields with organic materials containing rice powder is better than others in respected to rice yield and earthworm activity.
Keywords
soil environment; organic material; mulching; rice; paddy field;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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