Journal of Practical Agriculture & Fisheries Research (현장농수산연구지)

Korea National University of Agriculture and Fisheries (국립한국농수산대학교 교육개발센터)
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Effect of Different Herbicides on Initial Rice and Weedy Rice Seedling Growth under Iron-coated Seeds in Flooded Direct Seeding

담수직파 파종 전 제초제 처리에 따른 철분코팅종자와 잡초성 벼의 출아, 입모 및 초기생육 영향

  • 박광호 (한국농수산대학 식량작물학과)
  • Published : 2016.08.30
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Abstract

This research was conducted to determine a pre-germinated herbicides with iron-coated seeds in water and wet hill seeded rice. Days of rice seedling emergence was the faster germination at the application of benzobicyclon > oxadiazon > thiobencarb > butachlor and the sealed iron-coated seeds with pre-germinated seeds> pre-germinated seeds> iron-coated seeds with pre-soaking. The seedling establishment was relatively high in untreated control and benzobicyclon among seed treatments by 63.7% and 75.7%. There was 100% seeds killed of pre-germinated seeds in terms of herbicide phytotoxicity and sealed iron-coated seeds with pre-germinated seeds in butachlor but benzobicyclon was of safe with 2% rice seeds killed. Infant rice seedling height was of 9.2-12.9cm in benzobicyclon and 11.9-16.3cm in untreated control and thus there was relatively normal development and growth at the initial rice seedling.

벼 담수 및 무논직파재배에서 잡초성 벼(weedy rice) 및 잡초(weeds)방제를 위하여 철분 코팅볍씨를 이용하여 발아 전 제초제(pre-emerged herbicides)를 처리하여 안전한 제초제 선발 시험결과를 요약하면 다음과 같다. ① 출아일수는 제초제별로는 벤조비사이클론 >옥사디아존 > 티오벤카브 > 뷰타클로르 순으로, 사용종자별로는 철분코팅 밀봉종자(최아)> 최아종자>침종종자 철분코팅 순으로 출아가 늦었다. ② 사용종자 중 무처리와 벤조비사이클론 처리에서 침종종자 철분코팅의 입모율은 각각 63.7%, 75.7%로 최아종자 및 철분코팅 밀봉종자(최아)에 비하여 23.6~45.2%, 잡초성 벼보다는 46~62.5%나 높았다. ③ 뷰타클로르 제초제의 고사율은 최아볍씨와 철분코팅 밀봉종자(최아)에서는 100%의 고사율을 보였지만 벤조비사이클론은 2%의 고사율을 보여 비교적 안전한 것으로 나타났다. ④ 벤조비사이클론 3.5% 유제 처리의 파종후 25일 초장은 9.2~12.9cm로 무처리 11.9~16.3cm에 비하여 약간 짧았지만 정상적인 생육을 하였다.

Keywords

Acknowledgement

본 연구결과는 농림수산식품기술기획평가원 주요 곡물 조사료 자급률 제고사업단 사업으로 추진되었다.

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