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Ciência Rural

Print version ISSN 0103-8478On-line version ISSN 1678-4596

Abstract

SILVA, Enilson de Barros; RESENDE, José Carlos Fialho de  and  CINTRA, Welber Braga Rennó. Response of common bean to phosphorus doses in sandy soil. Cienc. Rural [online]. 2001, vol.31, n.6, pp.973-977. ISSN 0103-8478.  http://dx.doi.org/10.1590/S0103-84782001000600009.

Phosphorus availabity is influenced by several attributes that affect the response of the crops to the P application. The field experiment was conducted, on Mocambinho Experimental Farm (EPAMIG), "Projeto Jaíba" region, northern Minas Gerais, Brazil, on a Quartzipsament with the objetives of evaluating the response of common bean to P2O5 doses and critical levels for P in soil and in leaves. Four P2O5 doses were applied (0, 35, 70 and 140kg ha-1). The treatments were an followed by a randomized block design, with five replications. The cultivar "Carioca" with 240,000 populations of plants per ha was evaluated. The following observations were grains yield, soil P content (Mehlich 1) and leaf content in year 2,000. The grains yield of common bean increased with P2O5 doses, attaining yield to optimum profit yield (OPY) of 3,821kg ha-1 with application of 98kg ha-1 of P2O5. Phosphorus critical level in soil associated to OPY was 15.7mg dm-3 and to phosphorus leaves was 3.9g kg-1.

Keywords : Phaseolus vulgaris; level critical; soil; leaf content; Quartzipsament.

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