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Efficacy of Foliar Herbicide Treatment by Unmanned Helicopter under Water-Seeded Rice Cultivation

벼 담수표면산파 재배에서 무인헬기를 이용한 제초제 경엽처리 효과

  • Seong, Deok-Gyeong (Gyeongsangnamdo Agricultural Research & Extension Services) ;
  • Bea, Sung-Mun (Gyeongsangnamdo Agricultural Research & Extension Services) ;
  • Kim, Young-Gwang (Gyeongsangnamdo Agricultural Research & Extension Services) ;
  • Cho, Yong-Cho (Gyeongsangnamdo Agricultural Research & Extension Services) ;
  • Lee, Sang-Dae (Gyeongsangnamdo Agricultural Research & Extension Services) ;
  • Shim, Sang-In (Department of Agronomy, Gyenogsang National University) ;
  • Chung, Jung-Sung (Department of Agronomy, Gyenogsang National University)
  • Received : 2014.10.28
  • Accepted : 2014.12.08
  • Published : 2014.12.31

Abstract

This study was conducted to find out the effects of aerial application by unmanned helicopter (AAUH) on controlling weeds under water-seeded rice cultivation. Foliar herbicide (bentazone sodium + fenoxaprop-P-ethyl) was applied with diluted 8-times (standard concentration pest control) as AAUH. Foliar herbicide treatment with standard and two times amount were little damage, but with more than three times amount showed great damage in rice growth. Six annual and two perennial weeds were major weeds occurred in the experimental paddy field. On foliar herbicide treatment 25 days after direct seeding, AAUH showed high control values against weeds (96.3% for annual weeds and 99.8% for perennial weeds). There was no significant difference in weed control values between AAUH and conventional application. There was no spray injury against rice plants with aerial application. In the experiment for good spray timing (15, 20 and 25 days after direct seeding) 15 days showed highest weed control values with 98.5% to annual weeds and 99.8% to perennial weeds and no spray injury.

Keywords

Foliar herbicide;Unmanned helicopter;Weed control

Acknowledgement

Supported by : Rural Development Administration

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