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False Seedbed Weed Control under Different Preparation Date and Method in Organic Corn Field

옥수수밭 예방적 잡초방제를 위한 가묘상 처리 시기

  • Lee, Byung-Mo (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • Jo, Jeong-Rae (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • An, Nan-Hee (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • Ok, Jung-Heun (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • Kim, Seog-Cheol (Organic Agriculture Division, National Academy of Agricultural Science, RDA)
  • 이병모 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 조정래 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 안난희 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 옥정훈 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 김석철 (농촌진흥청 국립농업과학원 유기농업과)
  • Received : 2014.11.10
  • Accepted : 2014.12.04
  • Published : 2014.12.31

Abstract

Effects of false seedbed procedures in organic corn field were evaluated as affected by preparation date and method. False seedbed was prepared at May 7, 14, 21, 28 and June 5 with shallow tillage or flame weeding. Weed suppression rate of each treatment was evaluated 3 weeks after sowing. Optimal false seedbed preparation time was between end of May and early in June. Weed suppression rate of early false seedbed preparation was quiet low. Flaming weed treatment was better than shallow tillage. Weed suppression rate by the second treatment was increased approximately 30-60% compared to $1^{st}$ treatment. Weed suppression rate at 3 weeks after sowing was 70-90% by the second false seedbed preparation. The results showed that the false seedbed technique between end of May and early in June preparation has some potential weed control to reduce weed population during crop growth. Therefore late planting time crop such as corn, sorghum and soybean would be possible to apply false seedbed for organic weed control.

Keywords

False seedbed;Organic farming;Preventative weed control;Stale seedbed;Weed control

Acknowledgement

Grant : Research Program for Agricultural Science & Technology Development

Supported by : National Academy of Agricultural Science

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