Influencia del espaciamiento entre surcos sobre indices de crecimiento de dos cultivares de soya.

During the rainy season (May 2007) an investigation was developed on a Brown soil (Inceptisol), with the objective of assessment the influence of spacing among rows variation on indexes of growth of the soybean cultivars Incasoy-24 and Incasoy-27. In four spacing the height of the plant was measured and the foliar area, foliar area index, rate of net assimilation and photosynthetic potential were calculated. It was observed that the maximum values of height of the plant and foliar area index were obtained in the smaller spacing utilized (0.45 y 0.60 m), while the best results in the foliar area index and the rate of net assimilation is variable in the selected spacing according to the different assessment moments. [ABSTRACT FROM AUTHOR]