Influence of P Fertilization on Biological Nitrogen Fixation in Herbaceous Legumes Grown in Acid Savannah Soils from the Tabasco State, Mexico

Autor: O. A. Grageda-Cabrera, V. Velasco Velasco, J. A. Vera-Nunez, S. Salgado Garcia, J. P. Infante-Santiago, David Jesús Palma-López, R. Cardenas, Juan José Peña-Cabriales
Rok vydání: 2008
Předmět:
Zdroj: Journal of Sustainable Agriculture. 31:25-42
ISSN: 1540-7578
1044-0046
Popis: gThe use of leguminous plants in the agricultural systems of the humid tropics is an alternative means for providing N to soils considered unfertile and marginal. The objective of this study was to assess the biological nitrogen fixation (BNF) in the symbiosis Rhizobia-herbaceous legumes (Mucuna deeringiana, Canavalia ensiformis, Vigna umbellata, Cajanus cajan, Dolichos lablab, Arachis pintoi and Crotala-riajuncea) grown in acid soil amended with P fertilizer by the 15N-isoto-pic dilution technique (“A”-value) using maize, Brachiaria spp. and no nodulating common bean as reference crops. Results indicate a positive effect of P-fertilizer on parameters associated with BNF and biomass accumulation. The legumes Cajanus cajan and Canavalia ensiformis showed good performance in terms of dry weight of nodules (C. cajan = 758 and C ensiformis = 500 mg nodules plant−1 with 49 and 56 nodules plant−1, respectively) at flowering stage, and BNF (C. cajan = 170 and C ensiformis = 366 kg N ha−1 cycle−1) when 8...
Databáze: OpenAIRE