Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/40078
Title: New rhizobia strains isolated from the Amazon region fix atmospheric nitrogen in symbiosis with cowpea and increase its yield
Keywords: Vigna unguiculata
Biological nitrogen fixation
Amazon strains
Seed inoculation
Fixação biológica de nitrogênio
Cepas da Amazônia
Inoculação de sementes
Issue Date: 2019
Publisher: Instituto Agronômico de Campinas
Citation: FERREIRA, P. A. A. et al. New rhizobia strains isolated from the Amazon region fix atmospheric nitrogen in symbiosis with cowpea and increase its yield. Bragantia, Campinas, v. 78, n. 1, p. 38-42, 2019.
Abstract: Studies in the Amazon indicate a wide diversity of rhizobia with the ability for biological nitrogen fixation (BNF), which could expand the number of strains approved for cowpea. Thus, the aim of this field study was to evaluate the agronomic performance in cowpea of the several strains isolated from the soils of the Brazilian states Acre and Rondônia, and to compare them withstrains approved by the Ministry of Agriculture (MAPA) and withnon-inoculated controls (without and with mineral nitrogen fertilizer). The inoculants performed well. Though less effective than the other strains, the UFLA 03-36 strain also was prominent with respect to grain yield. Because of the positive response of the UFLA 03-129 strain, which led to yield increases greater than the obtained from the control without inoculation plus mineral-N, it can be recommended as an inoculum for cowpea. Further investigations should be carried out to obtain MAPA’s approval for their use. Other experiments involving this strain and several cultivars are being carried out on other types of soil and environmental conditions of the state of Minas Gerais.
URI: http://repositorio.ufla.br/jspui/handle/1/40078
Appears in Collections:DAG - Artigos publicados em periódicos
DCS - Artigos publicados em periódicos



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