Abstract
The objective of this study was to evaluate the symbiotic efficiency of rhizobia under field conditions for peas (Pisum sativum L.). Ten treatments were evaluated and divided into eight strains of rhizobia and two uninoculated strains as controls (with and without the addition of mineral N). The variables analyzed were: Nodulation, dry mass of the aerial part, total N of the aerial section, pea production and symbiotic efficiency. The inoculated rhizobia strains had effects on the number and mass of nodules, accumulated N in the aerial part and pea grains production. The strain EEL7802 presented the highest symbiotic efficiency for peas. The inoculation may allow cost reduction due to the equivalence with nitrogen fertilization. Studies in other soil types are needed to confirm the efficiency of this strain. Key words: Pisum sativum, Rhizobium leguminosarum, nodulation, nitrogen biological fixation.
Highlights
Pea (Pisum sativum L., Fabaceae) is a grain legume, characterized by its high nutritional value and its potential use for human and animal feeding
The objective of this study was to evaluate the symbiotic efficiency of rhizobia under field conditions for peas (Pisum sativum L.)
Variations were observed in the N content of the aerial plant part and in the grain yield of the pea plants inoculated with different rhizobial strains
Summary
Pea (Pisum sativum L., Fabaceae) is a grain legume, characterized by its high nutritional value and its potential use for human and animal feeding. Before the 1990s, the number of rhizobial strains recommended for association with pea plant in Brazil was. Most of the studies were performed under controlled conditions that use sterile substrates (sand and vermiculite) in pots and nutritious solution for the growth of the pea plants. This procedure is not recommended for the inoculation and culture of the rhizobial strains by the Ministry of Agriculture, Government of Brazil. The objective of this study was to evaluate the symbiotic efficiency of several rhizobial strains on pea plant under field conditions
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