Abstract
Adjustment of seeding density is dependent on the genotype and environmental conditions seeking to promote the better use of light and nutrients for plant productivity. The objective of this study was to determine the current white oat cultivated biotype of short cycle and reduced stature the ideal sowing density seeking to increase biomass production and grain in the main cultivation systems. In the study, four experiments were conducted, two seeking to assess the rate of biomass production and other two, directed the analysis of grain yield. The experimental design was of randomized blocks with four replications in factorial scheme 2 x 4 to cultivar (URS-Taura and Brisasul) and sowing density (100, 300, 600 and 900 of viable seeds m -2 ) in the system of succession corn/oat and soy/oat. The daily rate of dry matter production in different sowing densities shows genetic differences among the cultivars URS Taura and Brisasul in energy efficiency transformed in biomass and grain in the cultivation systems. Maximum productivity of grain between the genotypes of stature and white oats lower cycle indicate a sowing density adjusted in 550 m -2 seeds, more than technical recommendation of the species.
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