M.B. Matallo

TL;DR: In this article, the effect of repeated soil applications of the herbicide glyphosate on its dissipation and on soil microorganisms was studied by radiometric and microbial techniques, and the results indicated fast dissipation of the [14C]-glyphosate or [ 14C]metabolites extractable residues (half-life of 0.92±0.29 months), but increasing half-lives of total mineralization ranging from 2.2 to 3.4 months as the number of applications increased from 1 to 4.

TL;DR: Transgenic glyphosate-resistant soybeans have been commercialized and grown extensively in the Western Hemisphere, including Brazil, and four weed species have evolved resistance to glyphosate in GRS in Brazil and have great potential to become problems.

TL;DR: In this article, the authors proposed to minimize weed resistance problem: (a) rotation of GRS with conventional soybeans in order to rotate herbicide modes of action, avoidance of lower than recommended glyphosate rates; (b) keeping soil covered with a crop or legume at intercrop intervals; (c) keeping machinery free of weed seeds; and (d) use of a pre-plant nonselective herbicide plus residuals to eliminate early weed interference with the crop and to minimize escapes from later applications of glyphosate due to natural resistance of older weeds and/or incomplete

TL;DR: This section provides a separate section for glyphosate because of the relatively large amount of information on the effects of this very important herbicide on plant diseases and the fact that there have been many seemingly conflicting claims of the effect of glyphosate on diseases in glyphosate-resistant crops.

TL;DR: In this article, the effects of environmental conditions on the photodecomposition of two phenoxy-alkanoic acid herbicides were investigated on different soil surfaces conditions under sunlight exposition.