Sowing densities and NPK and liming rates for common bean (cv. Iapar 81) on clayey latosol of Ponta Grossa, Parana State, Brazil

Antonio Barbara de Souza, Messias José Bastos de Andrade, Vandeir Gregório Alves, Fernando Bauml Campagnoli

Abstract


With a view to studying the most adequate plant populations and levels of fertilization and liming to the bean crop cultivar IAPAR 81, a field experiment was conducted on a clayey Latosol of Ponta Grossa, Paraná State, Brazil, at the summer sowing season. The experimental design was randomized blocks in a 4 x 4 factorial scheme involving four plant populations (100, 200, 300 and 400 thousand plants ha-1) and four rates of fertilization and liming (0.0; 0.5, 1.0 and 1.5 of the recommended doses) with four replicates. Plant height, grain yield, pod number per plant, grain number per pod and 100 grain-weight were determined. It follows that both, fertilization plus liming and high plant population resulted into higher yields. The maximum economical efficiency was obtained from fertilizer and limestone amounts equivalents to those of the refference dose.

Keywords


Plant population; Fertilization; Soil liming; Phaseolus vulgaris; Cropping system.



DOI: http://dx.doi.org/10.5433/1679-0359.2004v25n1p5

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional