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수수 이식 및 직파재배시 중경제초에 의한 잡초방제 효과

Weed Control Method of Cereals Crops Using Weeder Machine for Environment-friendly Control Practice

  • Hwang, Jae-Bok (Crop Production and Physiology Division, National Institute of Crop Science, RDA) ;
  • Jung, Ki-Yeol (Crop Production and Physiology Division, National Institute of Crop Science, RDA) ;
  • Park, Tae-Seon (Crop Production and Physiology Division, National Institute of Crop Science, RDA) ;
  • Yun, Jong-Tak (Crop Production and Physiology Division, National Institute of Crop Science, RDA) ;
  • Kim, Hak-Sin (Crop Production and Physiology Division, National Institute of Crop Science, RDA) ;
  • Choi, In-Bae (Crop Production and Physiology Division, National Institute of Crop Science, RDA) ;
  • Koo, Bon-Il (Crop Production and Physiology Division, National Institute of Crop Science, RDA) ;
  • Bae, Hee-Soo (Crop Production and Physiology Division, National Institute of Crop Science, RDA)
  • 투고 : 2015.06.05
  • 심사 : 2015.09.11
  • 발행 : 2015.09.30

초록

농가에서 잡초방제를 위해 비닐멀칭을 이용한 직파재배보다 이식후 중경제초를 하여 잡초를 방제하고자 수수의 이식 및 직파재배시 잡초방제를 위한 중경제초 시기 및 횟수 시험에서 다음과 같은 결과를 얻었다. 이식재배시 중경제초는 이식후 20일, 30일 1회 실시와 20/40일 2회 실시하였다. 처리시기 및 횟수 시험에서 이식후 20일에 1회 실시한 구에서는 잡초방제가가 83%, 80%로 비닐멀칭 대비 90%에 비해 다소 낮았다. 수확기 경장은 중경제초 1회와 2회 및 비닐멀칭구가 111.6~126.8 cm에 비해 무제초구가 139.3 cm로 잡초와의 경합으로 도장하는 경향이었다. 간장은 중경제초구가 무처리구에 비해 초장이 20 cm 정도 짧고, 간경은 17.8 cm에 비해 작고, 2mm 굵어 도복에 강한 특징을 가지고 있다. 출수소요일수는 비닐멀칭구가 잡초의 발생량이 많았던 무처리구에 비해 7일정도 더 소요되었다. 수수 이식재배시 이식후 20일에 1회 중경제초를 하면 수량성이 95%로 비닐멀칭과 통계적 유의성이었다. 파종재배시 중경제초 처리시기 및 횟수 시험에서 파종후 10일과 파종후 30일에 2회 중경제초를 실시하면 초기에 발생하는 잡초가 방제되어 87% 이상의 효과가 있었다. 수량은 비닐대조구 대비 파종후 10일과 30일 2회 처리시 91%, 초기 처리가 늦은 20일과 30일 2회 실시한 구는 다소 감소하였다.

The experiment was conducted to elucidate the growth characteristics of sorghum in the different planting methods: direct sowing and transplanting (20 days after sowing, DAS). Weed weight was taken from three randomly chosen-2 plots 60 DAS (DAT). One time (20, 30 days after transplanting, DAT) and two times (10/20, 10/30, 20/30, 20/40 DAS) application of weeder machine (FRT 80E) were conducted for direct sowing and transplanting, respectively. In transplanting, the weed control efficacy of weeder machine at 90 DAT was about 67% (DAT 20), 57% (DAT 30) at one time and 87% at two times. The most effective application number was two times (20/40 DAT) followed by one time (20 DAT). However, when reviewing yield and economy, the frequency and times of using weeder machine were preferably one time and 20 DAT. Results with mechanical weed control have been particularly good in transplanted row crops such as sorghum. In direct sowing, the weed control efficacy of weeder machine 60 DAS was about 87% (10/20 DAS), 88% (10/30 DAS) and 82% (20/30 DAS) at two times, respectively. When reviewing yield and economy, the times and frequency of weeder machine were preferably two times, 10 and 30 DAS.

키워드

참고문헌

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피인용 문헌

  1. Weeding Efficacy and Phytotoxicity Evaluation of Soil-Applied Herbicides for Potential Use in Sorghum vol.5, pp.2, 2016, https://doi.org/10.5660/WTS.2016.5.2.82