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http://dx.doi.org/10.5660/KJWS.2011.31.2.167

Effects of Crimson Clover, Hairy Vetch, and Rye Residue Mulch on Weed Occurrence, Soybean Growth, and Yield in Soybean Fields  

Lee, Ji-Hyun (Organic Agriculture Division, National Academy of Agricultural Science, RDA)
Lee, Byung-Mo (Organic Agriculture Division, National Academy of Agricultural Science, RDA)
Shim, Sang-In (Department of Agronomy, College of Agriculture and Life Sciences, Gyeongsang National University)
Lee, Youn (Organic Agriculture Division, National Academy of Agricultural Science, RDA)
Jee, Hyeong-Jin (Organic Agriculture Division, National Academy of Agricultural Science, RDA)
Publication Information
Korean Journal of Weed Science / v.31, no.2, 2011 , pp. 167-174 More about this Journal
Abstract
Weed control using cover crops has advantages of agricultural and environmental aspects which prevent soil erosion, nitrogen supply, improving soil physical properties, reduction of nitrate leaching, organic supply and control of weed occurrence. In this study, we evaluated the inhibitory effects of cover crops on the weed occurrence, growth and yield of soybean in cover crop-soybean cropping system. The treatments were consisted of 4 different mulching system such as crimson clover (Trifolium incarnatum) residue, hairy vetch (Vicia villosa) residue, rye (Secale cereale) residue and Polyethylene plastic(P.E.) mulch with no mulch treatment (control). Three cover crops were grown throughout the winter and were cut in next spring. And then 13 days old soybean seedlings were transplanted in each treatment field on $4^{th}$ June. Crimson clover, hairy vetch and rye mulch treatments reduced weeds density compared to control (73.0%, 98.0% and 85.3% respectively), on $26^{th}$ May. However, weed inhibition rate of crimson clover mulch treatment was sharply decreased to 4.17% on $6^{th}$ August, while hairy vetch and rye mulch treatments were continued high weed inhibition rate with 87.6% and 72.0% respectively. There was no inhibition effect of perennial, winter annual and broadleaf weeds inhibition in crimson clover mulch treatment. Height of soybean in crimson clover, hairy vetch and P.E. mulch treatment was 6.9%, 20.2% and 22.0% higher than that of control. But height of soybean in rye mulch treatment was lower than control on $13^{th}$ July. At harvesting, yields of soybean were in order of hairy vetch mulch treatment${\fallingdotseq}$ P.E. mulch treatment > crimson clover mulch treatment ${\fallingdotseq}$ rye mulch treatment > control.
Keywords
cover crop; crimson clover; hairy vetch; rye; soybean;
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Times Cited By KSCI : 5  (Citation Analysis)
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