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A Potential Biological Weed Control by Golden Apple Snail(Pomacea canaliculata) in Wet Hill Seeded Rice with Iron-coated Seeds

벼 무논점파(철분코팅종자)재배에서 친환경 잡초관리를 위한 왕우렁이 이용 기술개발

  • Park, Kwang-Ho (Korea National College of Agriculture and Fisheries)
  • Received : 2012.07.20
  • Accepted : 2012.09.07
  • Published : 2012.09.30

Abstract

This experiment was conducted to determine a potential effective biological weed control and/or rice young seedling injury by golden apple snail (Pomacea canaliculata) at wet hill seeded rice field. The rice seeds used were treated by iron-coating. The efficacy of weed control as affected by golden apple snail has been tested with twice applications of young golden apple snails of 12 kg (24,000 young snails, $0.5g{\pm}10%$ per young snail, 30~40 days after hatching) per ha at the same day after harrowing and applied with rate of 10 kg (20,000 young snails) per ha at 15days after seeding, respectively. The comparison of this experiment was of the conventional machine transplanted rice paddy field in terms of weed control and rice plant injury as a visual grade. The weed efficacy was of 100% similar with the conventional paddy field which was applied by systematic herbicides of pre-emergence and post-emergence chemical herbicides and there was 1~3% significant rice young seedling injury but no yield losses and grain quality due to the input of golden apple snail.

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