Glyphosate Influence on the Soil Microorganism Sensibility, Physiological Parameters of the Plant, Isoflavones and Residues in the Seeds and Soil
Journal Title: Journal of Agriculture and Ecology Research International - Year 2016, Vol 5, Issue 4
Abstract
The use of Glyphosate herbicide is the best way to control weed growing when cultivating genetically modified soybean [Glycine max (L.) Merr.] resistant to glyphosate (N-phosphono-methyl-glycine) (GR). However, there have been doubts about the safety of this herbicide use concerning its effects on the plant, quality of grains and on the soil cultivated. Hence, the present study aimed at evaluating the effects of weed management two soybean cultivars (GR) and its conventional isogenic genotype with the use of different doses of glyphosate on soil processes and microorganisms, physiology and metabolism of the plant along with possible contamination of soil and seed by herbicide residues. For this purpose, two soybean genotypes, one GR BRS 243 RR and a conventional (isogenic genotype) were grown under different weed control methods: hand weeding and glyphosate herbicide application. The study was performed in Rio Grande do Sul State, during the crop seasons of 2008 to 2009, 2009 to 2010, 2010 to 2011 and 2011 to 2012, with evaluations of soil microbial biomass and respiration, chlorophyll, nitrogen, ureides, nitrates, carotenoid, isoflavone content in seeds, and glyphosate and aminomethylphosphonic acid (AMPA) residues in seeds and soil. The use of glyphosate positively affected the microbial biomass, basal respiration and seeds yield. On the other hand, the chlorophyll, nitrogen, ureides, nitrates, carotenoid, and isoflavone contents in seeds were unaffected by the treatment. Even though we used the recommended application doses, the glyphosate residues in the seeds were above the levels permitted by the Brazilian law. Also, AMPA residues were detected in the soil and the seeds.
Authors and Affiliations
G. M. B. Bohm, L. Amarante, E. M. Bohm, C. V. Rombaldi, M. I. Genovese
Keywords
Related Articles
- EP ID EP351583
- DOI 10.9734/JAERI/2016/22186
- Views 102
- Downloads 0
Effects of Biochar and Poultry Manure on the Composition of Phosphorus Solubilizing Fungi and Soil Available Phosphorus Concentration in an Oxisol
Introduction: The use of biochar to restore soil fertility is still in the exploratory stages in Ghana and there is paucity of information regarding the effect of biochar on soil biochemical properties. An experiment was...
Farmers’ Participation in Homestead Fish Production: Implications for Poverty Alleviation in Bayelsa and Delta States, Nigeria
The study examined participation of farmers in homestead fish production and its implications for poverty alleviation in Bayelsa and Delta States, Nigeria. Primary data were sourced from one hundred and ninety two (192)...
Percentage Germination and Seedling Evaluation Parameters of Parsley (Petroselinum crispum) Seeds as Affected by Different Priming Treatments and Durations
Aim: To investigate the effect of different priming pretreatments and durations on germination of parsley (Petroselinum crispum) seeds. Study Design: Completely randomized design with 3 treatments replicated four time...
Biocidal Properties of Chrysopogon zizanioides Extracts in the Control of Termites (Microcerotermes beesoni)
Laboratory experiments were conducted on the insecticidal properties of n-Hexane and ethanolic extracts of the leaves and roots of Chrysopogon zizanioides in the control of a ca...
Insecticide Activity of Essential Oils on the Development of Eggs and Adult of Caryedon serratus Olivier (Coleoptera: Chrysomelidae), Pest of Stored Groundnut c
In Burkina Faso, the groundnut is attacked during storage by the weevil Caryedon serratus Olivier. The damage caused by this pest can reach 70% in the absence of protection methods. To protect stored groundnut against C...