Acessibilidade / Reportar erro

Phosphorus fertilization, production components, productivity and seed physiological quality in common beans seeds

The objective of the research was to evaluate the effect of doses of phosphorus applied in the soil on production components, productivity and physiological quality of cv. IAC Carioca common beans seeds. Six doses of phosphorus (0, 30, 60, 90, 120 and 150kg.ha-1 of P2O5) were evaluated in a randomized block design, with four replications, in a "Latossolo Vermelho" with low phosphorus content (6mg.dm-3), under field conditions. At harvesting, the final stand of plants was evaluated and the first green bean insertion height, green bean length, number of green beans per plant, number of seeds per plant, number of loculus per green bean, number of empty loculus per green bean, number of loculus with seeds per green bean and mass of 100 seeds were measured. Seed productivity was determined based on the two central production lines in each plot, which had the water content adjusted to 13%. Seed physiological quality was evaluated by water content, germination test, first count of the germination test, accelerated aging, electric conductivity, seedling emergence in the field and seedling dry matter weight. Phosphorus fertilization with 150kg.ha-1 of P2O5 increased the number of green beans per plant and the number of seeds per plant. The others production components and seed productivity were nott modified by the application of phosphorus. The doses of phosphorus did not modify the physiological quality of common beans seeds, cv. IAC Carioca.

Phaseolus vulgaris; phosphorus; soil fertilization; yield


Associação Brasileira de Tecnologia de Sementes R. Raja Gabaglia, 1110 , 86060-190 Londrina - PR Brasil, Tel./Fax: (55 43) 3025 5120 - Londrina - PR - Brazil
E-mail: abrates@abrates.org.br