Resumen

RODRIGUEZ, Belkys  y  LOPEZ, Marisol. Evaluation of the biological fertilization on cowpea with nativa Rhizobium strains isoleted from an ultisol in landplane guarico state . Agronomía Trop. [online]. 2009, vol.59, n.4, pp.381-386. ISSN 0002-192X.

The effect of biological fertilization on cowpea, Vigna unguiculata L., with native Rhizobium strains isolated from an ultisol in landplane condition of Guárico state, Venezuela, was evaluated on dry matter production (MS), nodules percentage (PN), nodular mass (MN), nodular activity (AN), nitrogen uptake (N) and phosphorus uptake (P), in an experiment carried out in greenhouse conditions. The evaluated treatments were: without biofertilization (control), biofertilization with strain 1, biofertilization with strain 2 and biofertilization with consortium strains 1 + 2, jointly with the application of a reduced basal fertilization of N, P and K. the strain1 showed high capacity to colonize the crop, which turn it into biological fertilizer with the greatest potential to manage cowpea fertilization in llaneros homegarden in landplane conditions

Palabras clave : Cowpea; biofertilizers; fertility; symbiosis; Vigna unguiculata L; Rhizobium.