Revista Brasileira De Herbicidas 2012; 11(3): 322-331
Leaf application of manganese in genetically modified soybean submitted to glyphosate levels
The aim of this study was to evaluate glyphosate application in Roundup Ready® soybean and yield at different levels of manganese applied by foliar way. The experiment was conducted in 2011/2012 agricultural year in Nova Maringa County, Mato Grosso State, in randomized blocks experimental design, in factorial scheme 3 x 4, with four replications. Three glyphosate levels (0.0; 0.972; 1.620 kg a.i. ha-1) and four manganese levels (0.0; 0.350; 0.700 and 1.050 kg ha-1) were used. Glyphosate was applied at V2 crop growth stage and manganese levels during V8 crop growth stage. Analyzed parameters were plant height, height of first pod insertion, green mass, dry mass, number of pods per plant, mass of 1,000 grains and yield. For height of first pod insertion, plant height, mass of 1,000 grains and yield, glyphosate and manganese applications did not cause significant effects over TMG 133 RR development. Treatments with glyphosate and manganese and its interaction did not provide increased yield in TMG 133 RR genotype.
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