KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Effect of Crop Desiccant Treatment of Italian Ryegrass Seed Production on Harvest

작물 건조제 처리가 이탈리안라이그라스 수확기 생육, 수량 및 안전성에 미치는 영향

  • Lee, Yun-Ho (Crop physiology and production, National Institute of Crop Science) ;
  • Jang, Hyeon-Soo (Crop physiology and production, National Institute of Crop Science) ;
  • Kim, Dea-Uk (Crop physiology and production, National Institute of Crop Science) ;
  • Youn, Jong-Tak (Crop physiology and production, National Institute of Crop Science)
  • 이윤호 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 장현수 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 김대욱 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 윤종탁 (농촌진흥청 국립식량과학원 작물재배생리과)
  • Received : 2022.04.25
  • Accepted : 2022.05.11
  • Published : 2022.06.01
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Abstract

This study was conducted to evaluate the efficacy and phytotoxic of crop desiccant treatments on the seed production of Italian ryegrass (Lolium multiflorum Lam.) in Gimje and Buan, South Korea. Here, Italian ryegrass was treated 7, 10, and 14 days before harvest (DBH) and no difference in fresh weight, 1000-seed weight, germination rate, and seed yield was observed compared to the untreated control in the standard dose and double dose for seven DBH. However, the standard dose and double dose on the 10 DBH and 14 DBH had a lower 1000-seed weight, germination rate, and seed yield compared to the untreated control. In pesticide persistence analysis, the permitted standards were not exceeded in the seeds and straw according to the treatment time and concentration. These results suggest that the treatment effect and stability of Italian ryegrass can be expected if treated within seven DBH. However, it seems that crop desiccants should be used after considering grain ripening and weather to minimize loss of seeds.

본 연구는 김제와 부안에서 이탈리안라이그라스 종자 생산을 위한 작물 건조제 처리에 따른 약효·약해 평가를 수행하였다. 1. 수확전 7일, 수확전 10일, 수확전 14일에 처리하였을 때 수확전 7일의 기준량과 배량이 무처리 대비 생체중, 천립중, 발아율, 종실 수량에 차이가 없었다. 2. 수확전 10일과 14일의 기준량과 배량은 무처리와 대비하여 천립중, 발아율 및 수량이 낮았다. 잔류성 분석 결과 처리 시기와 농도에 따라 종실과 짚에서는 잔류성 허용 기준치를 초과하지 않았다. 3. IRG는 수확전 7일 이내에 작물건조제를 처리하게 되면 종자의 수분함량은 25% 정도이고, 무처리 대비 약 2~3일 정도 수확기가 앞당겨 졌다. 4. 따라서 수확전 7일 이내 작물건조제를 처리는 IRG 채종 안정성을 기대 할 것으로 판단되지만 종실 손실 최소를 위해서는 등숙 정도와 기상 환경 등을 고려하여 작물건조제를 처리해야 할 것으로 보인다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 작물시험연구사업(과제번호: PJ01415201)의 지원에 의해 이루어졌습니다.

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