Search Results for: Sorghum halepense
Glyphosate resistance in a Johnsongrass (Sorghum halepense) biotype from Arkansas
Abstract: Johnsongrass is one of the most troublesome weeds of the world and is listed as a noxious weed in Arkansas. Reduced johnsongrass control with the recommended application rate of glyphosate (840 g ae ha21) was reported in a continuous soybean field near West Memphis, AR, in the fall of 2007. A greenhouse study was …
Reduced translocation of glyphosate and dicamba in combination contributes to poor control of Kochia scoparia: Evidence of herbicide antagonism
Abstract: Kochia scoparia is a troublesome weed across the Great Plains of North America. Glyphosate and dicamba have been used for decades to control K. scoparia. Due to extensive selection, glyphosate- and dicamba-resistant (GDR) K. scoparia have evolved in the USA. Herbicide mixtures are routinely used to improve weed control. Herbicide interactions if result in …
Environmental health problems of glyphosate applications
Abstract: Glyphosate-based herbicides are leading products of the current pesticide market, and this trend has further strengthened outside Europe with the spread of glyphosate-tolerant GM crops. Glyphosate forms complexes with metal ions (Al, Fe, Mn, Zn) in the soil, but precipitation washes it into deeper soil layers. Its primary metabolite, AMPA, is more mobile than …
GM plants and resistance – resistance-management
Abstract: Ninety % of first generation GM plants evaluated in EU serve plant protection purpose. Twenty % are “insect”-resistant (Bt), 30% are “herbicide”- tolerant (glyphosate) and the further 40% are the combination of the mentioned two types. Pesticide resistance for an active ingredient used in a longer period is developed sooner or later in treated …
Evolved glyphosate-resistant weeds around the world: lessons to be learnt
Abstract: Glyphosate is the world’s most important herbicide, with many uses that deliver effective and sustained control of a wide spectrum of unwanted (weedy) plant species. Until recently there were relatively few reports of weedy plant species evolving resistance to glyphosate. Since 1996, the advent and subsequent high adoption of transgenic glyphosate-resistant crops in the …
Glyphosate-resistant weeds of South American cropping systems: an overview
Abstract: Herbicide resistance is an evolutionary event resulting from intense herbicide selection over genetically diverse weed populations. In South America, orchard, cereal and legume cropping systems show a strong dependence on glyphosate to control weeds. The goal of this report is to review the current knowledge on cases of evolved glyphosate-resistant weeds in South American …
