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• 영문명: Bakanae Disease Reduction Effect by Use of Silicate Coated Seed in Wet Direct-Seeded Rice
• 발행기관: 한국작물학회
• 저자명: 강양순(Yang-Soon Kang) 김완중(Wan Joong Kim) 김연주(Yeon Ju Kim) 정기홍(Ki-Hong Jung) 최을수(Ul-Su Choi)
• 간행물 정보: 『한국작물학회지』제61권 제1호, 9~16쪽, 전체 8쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2016.03.31

영문 초록

To investigate the effect of soluble silicate zeolite dressing of the rice against bakanae disease, field trial in reclaimed land and in vitro were carried out. The coated rice seeds (SCS) which were dressed with the mixture of 25% silicic acids (binder), and the zeolite (coating powder). In wet direct seeding, uniform scattering of rice seeds on the soil surface and the better seedling establishment were shown in SCS treatment plots. The incidence of bakanae disease began from the mid tillering stage toward the heading stage. Around heading stage, the ratio of infected tillers reached its highest point by 9.9% in non-SCS treatment plots. While, in SCS treatment plots, the ratio of infected tillers was no more than 0.01%. The vitality of the pathogenic fungi of bakanae disease in the SCS and non-SCS samples were assessed. Samples were incubated for one week keeping proper humidity at 30°C after inoculated with panicles of infected rice plants from experimental field plots. In non-SCS treatment, pinkish colonies were formed on the grain surface of panicle of infected plants, and mycelium, macro-conidia and micro-conidia were developed actively inside part of infected grain inoculated. While in SCS treatment, micro-conidia and mycelium were not survived and the growth of macro-conidia, mycelia were greatly inhibited and withered. Based on the results, it is concluded that the environmental friendly control of bakanae disease by use of SCS is possible and soluble silicate can be applied as agents for replacement of seed disinfection.

목차

재료 및 방법

결과 및 고찰

적요

키워드

Bakanae disease Colony Macro-conidia Micro-conidia Mycelium Seed-borne Silicate coated rice seed Wet direct-seeded rice