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PHOSPHORUS USE EFFICIENCY BY BEAN GENOTYPES

ABSTRACT

Phosphorus deficiency is one of the most yield limiting factors for bean production in savanna soils. Under this situation growing phosphorus efficient genotypes would be a solution to improve crop yields on P deficient soils such as savanna. A greenhouse experiment was conducted at the National Rice and Bean Research Center to evaluate P use efficiency of 15 bean genotypes ( Phaseolus vulgaris L.) to low, medium and high P levels on Dark Red Latosol. Significant differences were found among the genotypes for P use efficiency. Genotypes Rio Doce, São José, IPA 9 and Roxo 9 were classified as efficient and responsive.

Key words:
Phaseolus vulgaris L.; dry matter yield of tops; root length; mineral nutrition

Unidade Acadêmica de Engenharia Agrícola Unidade Acadêmica de Engenharia Agrícola, UFCG, Av. Aprígio Veloso 882, Bodocongó, Bloco CM, 1º andar, CEP 58429-140, Campina Grande, PB, Brasil, Tel. +55 83 2101 1056 - Campina Grande - PB - Brazil
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