The glyphosate controversy: an update

Abstract

The demand for food in the world grows year after year due in part to population growth, but also to the improvement of emerging markets. Brazil is one of the largest food producers in the world. In 2017, its cereal, legume and oilseed crops totaled 238.6 million tons, 29.2% more than the year before. Much of the great increase in productivity is due to the incorporation of transgenic seeds, especially cotton, maize and soybean, which possess genes that will increase plant’s adaptability to harsh soil and water conditions and, resistance to pests, but also tolerance to herbicides. Virtually, all transgenic soybeans planted in Brazil are resistant to glyphosate, the herbicide initially launched on the market by Monsanto in the 1970s under the trade name Roundup. Due to the existence of several transgenic crops tolerant to glyphosate, such as soy, wheat, corn and canola, this product is the most commercialized herbicide in the world. The use of glyphosate allows the sowing of transgenic crops immediately after application, making the planting and maintenance processes very practical. Soybeans, such as other transgenics, have biological safety already well defined, but the use of glyphosate is still an extremely controversial subject. This review presents some historical aspects of the binomial Roundup Ready soybean/glyphosate and discusses the most recent controversies about the use of glyphosate in Brazil and worldwide.

Creating informed consumers of aquatic invasive species management programs through online education for nonprofessionals

“…Qualitative assessment of the questions and responses in the group discussion forums also revealed some consistent themes. Questions from students in the pesticide modules commonly concerned safety; in particular, a number of participants raised questions around the use and continued registration of glyphosate as an active ingredient, in light of lawsuits against the manufacturer of Roundup® (Monsanto Company, Marysville, OH, USA 43041) that received substantial media attention (Tauhata et al 2020). Additionally, there were numerous requests during the 2020 course for clarification regarding how one might choose between alternative aquatic plant survey techniques that were discussed.…”