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Changes of Soil Redox Potential, Weed Control and Rice Growth in Paddy on Paper Mulching Transplanting by Organic Matter Application  

Jeon, Weon-Tai (National Institute of Crop Science, RDA)
Yang, Won-Ha (National Institute of Crop Science, RDA)
Roh, Sug-Won (Daejeon Metropolitan City Agricultural Technology Center)
Kim, Min-Tae (National Institute of Crop Science, RDA)
Seong, Ki-Yeong (National Institute of Crop Science, RDA)
Lee, Jong-Ki (National Institute of Crop Science, RDA)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.40, no.6, 2007 , pp. 495-500 More about this Journal
Abstract
Recently we are interest in organic farming of rice. The technology of paper mulching was practised without herbicide in machine transplanting cultivation of paddy. A field experiment was conducted in Gangseo series (coarse loamy, mixed, nonacid, mesic family of Aquic Fluventic Eutrochrepts) at the National Institute of Crop Science (NICS), RDA, Suwon, Gyeonggi province, Republic of Korea in 2004. This experiment was carried out to evaluate soil redox potential, weed control and rice growth by the different organic matter in paper mulching transplanting. Compost, rice straw and soiling rye were incorporated as organic matter. The nitrogen amount of controlled-release fertilizer (CRF) plot was 80% compared with nitrogen amount ($110kg\;ha^{-1}$) of conventional fertilization. Mulching paper consisted of recycled paper which was coated with biodegradable plastics. There were no difference between conventional rice transplanting and paper mulching on missing hills after organic matter application. Weed control were the highest at added soiling rye plot. The redox potential of soil was the lowest in rice straw + CRF 80% plot at tillering stage. The $NH_4{^+}-N$ in soil was the highest at soiling rye + CRF 80% tillering stage. There was no difference in yield between soiling rye + CRF 80%, compost + CRF 80% and conventional fertilization plot.
Keywords
Rice; Paper mulching; Controlled-release fertilizer; Weed control; Organic matter; Redox potential;
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