Acúmulo de nutrientes em soja transgênica no Cerrado goiano
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2012-02-27
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Universidade Federal de Goiás
Resumo
The soybean is grown and consumed throughout the world. Brazilian production is concentrated mainly in the Mid-South. However, few studies on the accumulation of
nutrients are made for improving the efficiency of production processes. We talk about the best fertilizer and sophisticated defensive, but if the plant does not respond well to all these stimuli do not result in profits for producers and more food for the population. The advent of transgenic cultivars reduced production costs, but the accumulation of nutrients in these plants is unknown. Therefore, this study aimed to evaluate the accumulation of nutrients in conventional and transgenic cultivars subjected to the same conditions. The experiment was conducted at the Federal Institute Goiano - Urutaí
Campus, from 12 November 2010 to 15 April 2011. We collected whole soybean plants at 20, 40, 60, 80 and 100 days after planting. The plants were taken to the laboratory washed in tap water and divided into stems, leaves, flowers and pods, passed in distilled water, dried in a forced air at 70 ° C and ground in Willey type mill. We analyzed the N, P, K, Ca, Mg, S, Cu, Fe, Mn and Zn. The results were subjected to analysis of variance, means and regression testing. It was concluded that the greatest accumulation of biomass and thus nutrient does not guarantee high yields in soybean.
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GONÇALVES, Janine Mesquita. Nutrient accumulation in transgenic soybean in the Cerrado
of Goiás. 2012. 64 f. Dissertação (Mestrado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2012.