Effects of phosphorus on growth, yield and nutrient accumulation in the common bean

Nand K. Fageria

Abstract


The objective of the study was to determine effect of P levels added to a P-deficient soil on growth, yield and nutrient accumulation in the common bean. The cultivars used were Carioca, CNF 10 and CNF 4856, and P treatments applied were 0, 25, 50, 75, 100, 125, 150, 175 and 200 mg P kg-1 of soil. Plants were harvested at 17, 31, 60 and 80 days after planting and dry weights of tops and roots and grain yields were measured. P treatments significantly affected growth and yield parameters, but the magnitude of the response differed between cultivars. Under glasshouse conditions, maximum grain yield was obtained with 125 to 150 mg P kg-1 of soil, depending on the cultivar. Uptake of P in roots and tops increased with P fertilization, but differed in amount from cultivar to cultivar. Accumulation of N, P, K, Ca, Mg, Fe and Mn was increased with P fertilization, but Zn and Cu were reduced. Results related to distribution and concentration of N, P, K, Ca, Mg, Zn, Fe, Mn and Cu in different parts are presented.

Keywords


Bean cultivars; Nutrient distribution; Oxisol; Phaseolus vulgaris L.

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