Contribution of symbiotic nitrogen fixation on pigeon-pea yield (Cajanus cajan (L.) Millsp)

Authors

  • M.J. Valarini Instituto de Zootecnia
  • R. Godoy EMBRAPA; CPPSE

DOI:

https://doi.org/10.1590/S0103-90161994000300021

Keywords:

nitrogen fixation, modulation, Bradyrhizobium, Cajanus cajan (L.) Millsp

Abstract

Pigeon-pea accessions were grown in a yellow-red latossol var. Laras in a greenhouse at the Instituto de Zootecnia, Nova Odessa, SP, Brazil, to evaluate their N2 fixing characteristics. Shoot dry matter weight, mass of nodules, acetylene reduction activity, dry matter N content and relative efficiency were not significantly increased by the inoculation with recommended strains of Bradyrhizobium spp. However, inoculation made shoot weight and nitrogen content (15 - 17% crude protein) comparable to the nitrogen fertilization level of 120 kg N/ha. It is concluded that the pigeon-pea can establish a Bradyrhizobium association able to provide more than 90% of nitrogen needed for its vegetative growth.

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Published

1994-12-01

Issue

Section

Agronomy

How to Cite

Contribution of symbiotic nitrogen fixation on pigeon-pea yield (Cajanus cajan (L.) Millsp) . (1994). Scientia Agricola, 51(3), 500-504. https://doi.org/10.1590/S0103-90161994000300021