Yield by sieves of classification and vigor in response to the time of harvesting of soybean seeds

• Autor(a) principal: Mathias, Vanderléia
• Data de Publicação: 2018
• Outros Autores: Coelho, Cileide Maria Medeiros
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ciências Agrárias (Belém. Online)
• Texto Completo: https://ajaes.ufra.edu.br/index.php/ajaes/article/view/2619
• topic: Glycine max; Productivity; Viability; Glycine max; Produtividade; Viabilidade

The objective of this study was to evaluate the yield performance by sieves of classification and vigor in response to the harvest periods of soybean cultivars. The experiment was conducted in the crop 2015/16 with a randomized complete block design with subdivided plots and four replications. In the plots, the cultivars NA 5909 RG, BMX Ativa RR, BMX Vanguarda IPRO, NS 5959 IPRO were distributed, while in the subplots, the harvest times, which began at the physiological maturity, R7, were followed by R7 + 5 days, R7 + 10 days, and R7 + 20 days. The productivity (kg ha-1), productivity components, agronomic characteristics, sieve yield, viability and seed vigor were determined. The cultivars had a significant effect on productivity, yield components, agronomic characteristics and sieve yield. The yield varied from 4051.6 kg ha-1 BMX Vanguarda IPRO cultivar to 4671.7 kg ha-1 BMX Ativa RR. Cultivars and harvesting times had a significant effect on viability and vigor. All cultivars presented a positive productivity performance. The sieves with the highest yield were 6.0 and 6.5 mm. The cultivar NA 5909 RG maintained vigor throughout the desiccation phase, showing promise for obtaining high vigor seeds.