한국환경농학회지 (Korean Journal of Environmental Agriculture)

  • 제25권3호
  • /
  • Pages.262-267
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  • 2006
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  • 1225-3537(pISSN)
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  • 2233-4173(eISSN)
한국환경농학회 (The Korean Society of Environmental Agriculture)
권호 표지
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Rhizobacterial Populations of Glyphosate-Resistant Soybean (Glycine Max) as Affected by Glyphosate and Foliar Amendment

  • Kim, Su-Jung (Department of Soil, Environmental and Atmospheric Sciences, University of Missouri)
  • 발행 : 2006.09.30
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초록

Increased application of glyphosate (Gly) in glyphosate-resistant (GR) soybean cropping systems may affect rhizospheric microorganisms including IAA-producing rhizobacteria (IPR) and their effect on the growth of soybean. This field experiment was conducted to assess IPR populations in the rhizosphere of GR soybean ('Roundup-Ready' DeKalb DKB38-52) treated with glyphosate and foliar amendment treatments such as $PT21^{(R)}$ (urea solution with N 21 %) and $Grozyme^{(R)}$ (Biostimulant: mixtures of micro nutrients and enzymes). Effects of herbicide, sampling date, and their interaction on total bacterial numbers were significant (P < 0.001, 0.001, 0.013, respectively). Total bacteria (TB) numbers were increased with glyphosate treatment at 20 d after application and highest TB populations were associated with $Grozyme^{(R)}$ application, possibly due to the additional substrate from this product. The IPR of the soybean rhizosphere was significantly affected by herbicide, sampling date, and the herbicide*foliar amendment interaction. The ratios of numbers of IPR to TB ranged from 0.79 to 0.99 across the sampling dates irrespective of treatments. IPR numbers were slightly hindered by glyphosate application regardless of foliar amendment.

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참고문헌

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피인용 문헌

  1. Glyphosate affects micro-organisms in rhizospheres of glyphosate-resistant soybeans vol.110, pp.1, 2011, https://doi.org/10.1111/j.1365-2672.2010.04864.x