Abstract
The use of nitrogen fertilizer in seed production fields can improve seed yield and quality by affecting the embryo and reserve organs formation. The objective of this study was to evaluate bean seeds yield and physiologic potential, according to nitrogen top-dressing application on two cultivars. It was used a randomized blocks design, in a 2×6 factorial scheme, with 12 treatments (Pérola and IAC Carioca Eté cultivars and six top-dressing nitrogen levels: 0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 90 kg ha-1, 120 kg ha-1, and 150 kg ha-1) and four replications. The nitrogen application increased the seeds yield with optimal dose of 143 kg of N ha-1, for the Pérola cultivar, and 134 kg of N ha-1, for the IAC Carioca Eté cultivar, with Pérola showing higher yield levels. Changes in seeds quality were not observed when nitrogen levels increased.
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