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In one field of the Agricultural experimental station "Álvaro Barba Machado", located in the Central University "Marta Abreu" of the Villages, an investigation was carried out in the rainy season, with the objective to evaluate the effect of four spacing among furrows on the yield, yield's components and the weight of 100 seeds of two soybean cultivars: Incasoy-24 and Incasoy-27. In both cultivars was observed that the plants spaced at 0.45 and 0.60 m had better agronomic response in the yield components: number of legumes and seeds per plant, the 100 seeds weight didn't perform statistical differences in none of the assessment spacing and yield reached values more than 2 t ha-1 in those plants sowed in the smaller spacing selected. [ABSTRACT FROM AUTHOR]

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]