African Journal of Agricultural Research
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Article Number - BF11B6C46489


Vol.9(32), pp. 2495-2505 , August 2014
DOI: 10.5897/AJAR2013.7382
ISSN: 1991-637X



Full Length Research Paper

Microbiological attributes in a latosol in glyphosate application under water deficit conditions



Alan Mario Zuffo
  • Alan Mario Zuffo
  • Depto. Fitotecnia, Campus Universitário, UFLA, 37200-000, Lavras, MG, Brasil.
  • Google Scholar
Fabiano André Petter
  • Fabiano André Petter
  • Depto. de Fitotecnia, UFMT, Av. Alexandre Ferronato, 1200 - 78557-267 - Sinop, MT - Brasil.
  • Google Scholar
Júlio Cézar Azevedo Nóbrega
  • Júlio Cézar Azevedo Nóbrega
  • Depto. Ciência do Solo,Campus Universitário, UFLA, 37200-000, Lavras, MG, Brasil.
  • Google Scholar
Leandro Pereira Pacheco
  • Leandro Pereira Pacheco
  • Depto. de Produção Vegetal, UFMT Rod. MT 270, Km 06 - 78735-910 - Rondonópolis, MT – Brasil
  • Google Scholar
Francisco Alcântara Neto
  • Francisco Alcântara Neto
  • Depto. Ciência do Solo,Campus Universitário, UFLA, 37200-000, Lavras, MG, Brasil.
  • Google Scholar
Fabrício Ribeiro Andrade
  • Fabrício Ribeiro Andrade
  • Depto. Ciência do Solo,Campus Universitário, UFLA, 37200-000, Lavras, MG, Brasil.
  • Google Scholar







 Received: 28 May 2013  Accepted: 16 June 2014  Published: 04 August 2014

Copyright © 2014 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


The objective of this study was to evaluate the effects of glyphosate on soil microbial activity under appropriate and water deficit conditions. The factors consisted of four treatments with different Roundup Ready® soybean cultivars, two herbicidal treatments [glyphosate (1.080 and 1.800 g a.e. ha-1) + control] and two soil moisture treatments (appropriate and water deficit conditions), plus two soybean conventional varieties subject only to the soil moisture treatments. It was evaluated total organic carbon (TOC), basal respiration rate (CO2), microbial carbon biomass (MCB), metabolic quotient (qCO2), microbial quotient (qmic), nodule number (NN), and dry weight of nodules per plant (DWNP). Except for TOC, all other microbiological parameters were significantly influenced by the application of glyphosate, and the effects are more evident at a 1.800 g a.e. ha-1 dose in Roundup Ready® soybean cultivars associated to water deficit condition. The soil microbiota stability was favored by the absence of glyphosate application and water deficit condition on soil. MCB and qCO2 showed to be quite sensitive to changes resulting from the use of glyphosate. In general, in conventional cultivars there was lesser effect of water deficit conditions on the microbiological attributes, when compared to treatments with glyphosate application under the same conditions.

 

Key words: Glycine max (L.) Merrill, inhibitors of the enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPs), microbiota, Roundup Ready® soybean seed.

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APA Zuffo, A. M., Petter, F. A., Nóbrega, J. C. A., Pacheco, L. P., Neto, F. A., & Andrade, F. R. (2014). Microbiological attributes in a latosol in glyphosate application under water deficit conditions. African Journal of Agricultural Research, 9(32), 2495-2505.
Chicago Alan Mario Zuffo, Fabiano Andr&e Petter, J&ulio C&ezar Azevedo N&obrega, Leandro Pereira Pacheco, Francisco Alcântara Neto and Fabr&icio Ribeiro Andrade. "Microbiological attributes in a latosol in glyphosate application under water deficit conditions." African Journal of Agricultural Research 9, no. 32 (2014): 2495-2505.
MLA Alan Mario Zuffo, et al. "Microbiological attributes in a latosol in glyphosate application under water deficit conditions." African Journal of Agricultural Research 9.32 (2014): 2495-2505.
   
DOI 10.5897/AJAR2013.7382
URL http://www.academicjournals.org/journal/AJAR/article-abstract/BF11B6C46489

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