벼 무경운 이앙재배시 왕우렁이(Pomacea canaliculata) 치패를 이용한 잡초방제

• Published in: Weed & turfgrass science Vol. 9; no. 3; pp. 235 - 243
• Main Authors: 신종희(Jong-Hee Shin), 한채민(Chae-Min Han), 김상국(Sang-Kuk Kim), 권중배(Jung-Bae Kwon), 김종수(Jong-Su Kim)
• Format: Journal Article
• Language: Korean
• Published: 한국잡초학회·한국잔디학회 01.09.2020; 한국잔디학회
• Subjects: 농학; No-tillage rice farming; Weed control; 잡초방제; 무경운 벼재배; 왕우렁이; GAS(Golden apple snail)
• ISSN: 2287-7924; 2288-3312
• DOI: 10.5660/WTS.2020.9.3.235

무경운 벼 재배논에서 이앙전 왕우렁이 치패(어린 우렁이)의 투입시기에 따른 잡초방제 효과를 조사한 결과, 무제초 대비 이앙하기 21, 14, 7일 전 투입과 이앙당일 투입에서 각각 91, 90, 80, 65%의 방제효과가 있었다. 이앙하기 21-7일 전에 왕우렁이 치패를 ha당 15 kg (약 7,500개) 투입시 올챙이고랭이, 여뀌, 미국외풀, 사마귀풀, 물달개비를 100% 방제할 수 있었다. 왕우렁이 치패 투입시기에 따라 초장을 비롯한 분얼수, 수량구성요소에는 유의적 차이를 나타내지 않았다. 백미수량의 경우 이앙전 14일 투입구에서 4,610 kg·ha-1로 무제초구 대비 158%의 수량을 나타내었다. 제초효과 및 쌀수량을고려한다면무경운논에서이앙전왕우렁이치패투입은이앙하기 21-7일전이적합한것으로판단되었다. Weed management under organic farming systems is very problematic since organic agriculture does not allow synthetic herbicides. We investigated the influence of the input time of young golden apple snail (GAS, Pomacea canaliculata) on the weed control to suggest and introduce this environment-friendly weed management technique in no-tillage rice cultivation. This experiment was conducted in environment-friendly no-tillage rice paddy field in Yecheon, Gyeongsangbuk-do. The objective of this research was the method for weed management through the study on the effect of weed control by input time (applied at 21, 14, 7 and 0 days before rice transplanting) of young GAS (15 kg·ha-1). The effectiveness of weed control as affected by GAS when applied at 21, 10, 7, and 0 days before transplanting (DBT) was 91, 90, 80, and 65%, respectively. The young GAS, when applied 21-7 days before transplanting at 15 kg·ha-1 (approximately 7,500 ea) provided 100% control of Scirpus juncoides, Persicaria hydropiper, Lindernia dubia, Aneilema japonica, and Monochoria vaginalis. The variations in the input time of GAS caused significant differences in the harvested yield, but no significant differences were found in the plant height, tiller number, ripening and grain weight. Approximately 4,340-4,600 kg·ha-1 of the rice yield obtained through the utilization of apple snails 21-7 days before transplanting. These data indicate that the application of young GAS before transplanting is an efficient method for weed management in environment-friendly no-tillage rice paddy fields KCI Citation Count: 0