Eficiência nutricional da soja RR na ausência do glifosato
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Data
2014
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Resumo
The nutrient accumulation can be influenced by several factors, among them the application of
chemical products. With the development of glyphosate-resistant cultivars it has been observed an
increase using of glyphosate due to several factors, however the herbicide can induce reduction of
biomass, nutrient accumulation and productivity. The objective of this study was evaluate the
performance of conventional and transgenic soybean cultivars without glyphosate application, on dry
matter production, nutrient accumulation and productivity. Therefore, five conventional cultivars and
six transgenic were grown without glyphosate application. The sampling was carried out at 20, 40, 60,
80 and 100 days after planting (DAP) to determine the biomass and nutrient accumulation (N, P, K,
Ca, Mg, S, Cu, Fe, Mn and Zn). At the end of the experiment the productivity was determined by
harvesting the grains. The experimental design was a split plot with four repetitions. Comparing the
genetic similarity the transgenic cultivars presented higher yields compared to conventional.
Concluding, the conventional and transgenic soybean presented the same nutritional efficiency for
biomass production, nutrient accumulation and productivity.
Descrição
Palavras-chave
Absorção de nutrientes, Glycine Max, Produção, Glycine max, Nutrient uptake, Production
Citação
GONÇALVES, Janine Mesquita; SOUZA, Eli Regina Barboza de; FERNANDES, Eliana Paula; LEANDRO, Wilson Mozena; TAVARES, Cássio Jardim. Eficiência nutricional da soja RR na ausência do glifosato. Cientifica, Jaboticabal, v. 42, n. 2, p. 157-163, 2014.