Sowing density on oat production physiological parameters

José Antonio Gonzalez da Silva, Rubia Diana Mantai, Antonio Costa de Oliveira, Cristiano Fontaniva, Emilio Ghisleni Arenhardt, Micheli Brasil Olegário, Vinícius de Lima Sberse

Resumo


The optimal sowing density is dependent on the genotype and environmental conditions. This study aims at defining the optimal sowing density that maximizes the hay and grains production for the current short-cycle and reduced height biotype of white oat cultivated on a commercial scale, thus justifying the need for using seeds density superior to the recommended. Experiments were conducted in a complete randomized block design with four replications in a 2 x 4 factorial arrangement to cultivate (URS Taura and Brisasul) and sowing density (100, 300, 600 and 900 seeds m-2) in the corn/oat and soybean/oat succession system. Regardless of the genotypes tested and cropping system, the current standard biotype of cultivated white oat (short cycle and reduced height) evidence in the physiological characters of production sowing density adjusted around 500 seeds m-2. The results obtained show that the recommendation proposal of seeds superior to the technical indications of oats in the mean cultivated biotype a part from increment the grains production can bring benefits to qualify the crop management.


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DOI: http://dx.doi.org/10.15361/1984-5529.2015v43n3p226-235