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http://dx.doi.org/10.5660/KJWS.2011.31.3.294

Studies on Application Method and Safety of Macrogranule(GG) Herbicide for Remote-controlled Aerial Application  

Yoon, Cheol-Su (Central Research Institute, Kyungnong Co., Ltd.)
Bae, Chang-Hyu (Department of Well-being Resource, Sunchon National University)
Lee, Sheong-Chun (Department of Well-being Resource, Sunchon National University)
Kim, Kyung-Hyun (Central Research Institute, Kyungnong Co., Ltd.)
Lee, Kye-Hwan (Central Research Institute, Kyungnong Co., Ltd.)
Cho, Tae-Kyoung (Department of Statistic & Information Science, Dongguk University)
Hwang, In-Cheon (Central Research Institute, Kyungnong Co., Ltd.)
Publication Information
Korean Journal of Weed Science / v.31, no.3, 2011 , pp. 294-307 More about this Journal
Abstract
This experiment carried out to confirm characteristics of macrogranule (GG) for herbicidal efficacy by using remote-controlled aerial application (RCAA) to control annual and perennial weeds in rice paddy field, application methods, and application times of formulation types. Particle of 500 g GG having average diameter of 2.5~3 mm was over 85 percent, the bulk density of the particle was $0.2\sim0.4g\;mL^{-1}$ and the particle was water floating granule. Active ingredients and external form of halosulfuronmethyl+mefenacet GG remained stable under condition of storage stability test. The disintegration time of the GG was faster as the water temperature was increased. But disintegration time was not affected by pH on the water conditions. By using hand, spoon and power applicator, drift distances of GG were 4~5m, 7 m and 10~12 m, respectively. GG showed good herbicidal efficacy and plant safety in all of the application methods such as, using hand, spoon, power applicator and RCAA. Application times of GG, GR, SC and TB by hand in $4,000m^2$ were 38 min. 4 sec, 42 min. 20 sec, 38 min. 10 sec and 21 min. 4 sec, respectively, but application time of GG by using RCAA was 1 min 32 sec. According to appearance and characteristics of formulation types, suspension concentrate (SC) and GG were possible formulation types for RCAA.
Keywords
herbicide; macrogranule; remote-controlled aerial application; storage stability; weed;
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Times Cited By KSCI : 8  (Citation Analysis)
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