Weed & Turfgrass Science

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Effect of Cover Crop on Weed Control in No-tilled Organic Soybean Field

콩 무경운 유기재배 시 피복식물의 잡초억제 효과

  • Cho, Jung-Lai (Organic Agriculture Division, National Institute of Agricultural Science, RDA) ;
  • An, Nan-Hee (Organic Agriculture Division, National Institute of Agricultural Science, RDA) ;
  • Nam, Hong-sik (Organic Agriculture Division, National Institute of Agricultural Science, RDA) ;
  • Lee, Sang-min (Organic Agriculture Division, National Institute of Agricultural Science, RDA) ;
  • Ok, Jung-hun (Soil and fertilizer Division, National Institute of Agricultural Science, RDA)
  • 조정래 (국립농업과학원 유기농업과) ;
  • 안난희 (국립농업과학원 유기농업과) ;
  • 남홍식 (국립농업과학원 유기농업과) ;
  • 이상민 (국립농업과학원 유기농업과) ;
  • 옥정훈 (국립농업과학원 토양비료과)
  • Received : 2017.08.29
  • Accepted : 2017.09.25
  • Published : 2017.09.30
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Abstract

This study was conducted to evaluate weed control effect in organic soybean upland field as affected by cover crops including rye, hairyvetch, and its mixture. The experiment was conducted during two years (2015 and 2016) at the NAS (National Institute of Agricultural Sciences) organic farming experimental field. The cover crops were seeded after tillage at fall crop season in 2014, and then, the soybean field was managed with no tillage system from 2015. The weed suppression rates of cover crops application for rye and mixture (rye+hairyvetch) treatment during 60 days after transplanting were 80% and 30%, respectively. However, weed suppression rate of hairyvetch treatment was not significantly different as compared to control. Weed flora in experimental field were less than general soybean field. The average organic soybean yield was generally low compare to normal year, nevertheless, the soybean yield for rye and mixture treatment in 2016 were significantly higher than PE mulching treatment.

전북 완주의 국립농업과학원 유기농업 시험포장에서 2015년과 2016년 콩 무경운 유기재배를 위해 피복식물을 이용한 잡초관리 시험을 수행하였다. 피복식물은 호밀 단파와 헤어리베치를 단파하는 처리와 혼파하는 처리를 두었다. 피복식물은 2014년 가을에는 경운 후에 파종하였으나 2015년 이후에는 무경운 파종하였고, 콩은 2015년과 2016년 모두 무경운 재배하였다. 호밀 피복구에서는 정식 후 60일까지 80% 이상의 잡초억제율을 보여 무경운 재배에서 잡초관리가 가능한 것으로 판단되며, 호밀/헤어리베치 혼파구에서도 30% 이상의 잡초억제율을 보여 잡초관리 가능성을 확인하였다. 하지만 헤어리베치 피복구는 잡초억제 효과는 거의 나타나지 않았다. 유기재배 콩 포장의 발생 초종은 일반 포장에 비하여 많지 않았다. 2016년에 콩 무경운 유기재배 수량은 관행재배와 비교하여 다소 좋은 수량을 나타내었으나 전체적으로 평균수량은 낮게 나타났다.

Keywords

References

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