Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Effects of Bio-degradable Mulches on the Yield of Maize and the Density of Soil Microbe

  • Lim, Soo-Jeong (Gangwondo Agricultural Research & Extension Services) ;
  • Lee, Min-Bum (Ilshin Chemical Co.) ;
  • Kim, Se-Won (Gangwondo Agricultural Research & Extension Services) ;
  • Kim, Jang-Su (Gangwondo Agricultural Research & Extension Services) ;
  • Heo, Su-Jeong (Gangwondo Agricultural Research & Extension Services) ;
  • Choi, Seung-Chul (Gangwondo Agricultural Research & Extension Services) ;
  • Yoon, Byeong-Sung (Gangwondo Agricultural Research & Extension Services) ;
  • Kim, In-Jong (Gangwondo Agricultural Research & Extension Services)
  • Received : 2016.07.14
  • Accepted : 2016.08.29
  • Published : 2016.08.31
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Abstract

The use of polyethylene film has a problem such as increasing rural environmental contamination, collection costs and farmers' workload. The objective of this study was to evaluate bio-degradable films in terms of yield of maize and soil environment. Treatments were bio-degradable film A (BDF A), bio-degradable film B (BDF B), high density polyethylene (HDPE), and non-mulched (NM) soil. Daily mean values of soil temperature (10 cm depth) under BDF A, BDF B, and HDPE were higher than in NM soil by 2.2, 2.8, $3.1^{\circ}C$ respectively. In the mulching cultivation of maize, bio-degradable film began to degrade from 50~60days after the planting. The degradation was much progressed in the harvest time and almost decomposed in the following spring. The weight of ear of maize was not shown significantly by mulching treatments. There were little changes of soil chemical properties for the bio-degradable film mulching. After using bio-degradable films, the contents of biomass-C and dehydrogenase activity increased from 92 to $137{\sim}147mg\;kg^{-1}$, and from 87 to $123{\sim}168mg\;kg^{-1}$ respectively.

Keywords

References

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