Nodulação e produção do caupi (Vigna unguiculata L. Walp) sob efeito de plantas de cobertura e inoculação

Nascimento, Cleópatra Saraiva do; Lira, M. A.; Stamford, Newton Pereira; Freire, Maria Betânia Galvão dos Santos; Sousa, Carlos Antônio Ferreira de

doi:10.1590/s0100-06832008000200013

“…Os resultados encontrados no presente trabalho corroboram aos encontrados por Nascimento et al (2008Nascimento et al ( , 2010 e Zilli et al (2009), avaliando o desenvolvimento e a produtividade do feijão-caupi em condições de campo, onde a inoculação com estirpes recomendadas permitiram produção de biomassa e grãos no feijão-caupi semelhantes à da adubação com 50 kg ha -1 de N.…”

Section: Methodsunclassified

Eficiência agronômica de estirpes de rizóbio inoculadas em feijão-caupi no Cerrado, Gurupi-TO

Chagas¹,

Rahmeier²,

Fidélis³

et al. 2010

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Resumo -A interação do feijão-caupi com bactérias fixadoras de N atmosférico pode aumentar a produtividade e diminuir os custos de produção. No presente trabalho, avaliou-se, no campo, a eficiência agronômica, através do acúmulo de biomassa da parte aérea, radicular, número e biomassa dos nódulos, eficiência relativa e produtividade de três cultivares de feijão-caupi (BRS Nova Era, BRS Pujante e Vinagre), em experimentos independentes, inoculadas com cinco estirpes de rizóbio, BR 3302 (UFLA 3-84), BR 3301 (INPA 03-11B), BR 3262, BR 3299 e BR 3267, mais dois controles, testemunha e adubado com nitrogênio (50 kg de N ha -1 ), em cada experimento, em blocos ao acaso. Para cada cultivar a resposta de cada estirpe inoculada variou dentro das características avaliadas. Porém, a estirpe BR 3302 mostrou uma constante em relação às características de biomassa e a produtividade para a cultivar Nova Era no experimento 1, com valores próximos ao tratamento adubado. Para as cultivares Pujante e Vinagre, nos experimentos 2 e 3, respectivamente, também foram observados resultados satisfatórios com a inoculação da estirpe BR 3302, com produtividade cerca de 22 e 11% superiores ao tratamento adubado com nitrogênio em cada experimento, porém, não diferindo das demais estirpes. Na média geral dos três experimentos independentes, foram observadas produtividades de grãos do feijão-caupi de 743 e 826 kg ha -1 para os tratamentos com adubação nitrogenada e o tratamento inoculado com a estirpe BR 3302, respectivamente. Assim, a estirpe BR 3302 proporcionou os melhores resultados para as três cultivares de feijão-caupi. Palavras-chave -Vigna unguiculata. Fixação biológica do nitrogênio. Biologia do solo.Abstract -The interaction of cowpea with atmospheric N fixing bacteria can increase productivity and reduce production costs. In this study, it was evaluated in the field, the agronomic efficiency, through the accumulation of biomass of shoot, root, number and biomass of nodules, relative efficiency and productivity of three cultivars of cowpea (BRS New Era, BRS vibrant and Vinegar), in independent experiments, inoculated with five strains of rhizobia, BR 3302 (UFLA 3-84), BR 3301 (INPA 03-11B), BR 3262, BR 3299 and BR 3267, two controls, control and fertilized with nitrogen (50 kg of N ha -1 ) for each experiment, in blocks. For each cultivar the response of each strain inoculated varied within traits. However, strain BR 3302 showed a constant on the characteristics of biomass and productivity assessed, to cultivar Nova Era in Experiment 1, with values near the fertilized soil. For the cultivars Pujante and Vinagre, in experiments 2 and 3, respectively, were also observed satisfactory results with the inoculation of strain BR 3302, with productivity about 22 and 11% higher than the treatment fertilized with nitrogen in each experiment, however, did not differ on the other strains inoculated. The mean of three independent experiments, were observed grain yields of cowpea of 743 and 826 kg ha -1 for the treatments with nitrogen and the tr...

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“…Melo and Zilli (2009) showed that the interference of soil and climate factors reduced the nodulation of V. unguiculata plants grown in the field compared to those grown in a greenhouse. The success in nodulation of leguminous plants is a complex process that depends on different environmental factors, such as amount of available P (Abbasi et al, 2008), presence of other leguminous plants nearby (Nascimento et al, 2008), soil acidity (Meghvansi et al, 2005), interaction with microorganisms (Azcón-Aguilar and Barea, 2015), and water and heat stresses (Silva et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Response of Cratylia argentea (Desvaux) O. Kuntzeto inoculation with Rhizobium sp. and Bradyrhizobium sp. strains

Mattar¹,

Barros²,

Brasileiro³

et al. 2018

Aust J Crop Sci

0

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Cratylia argentea is a neotropical leguminous shrub that exhibits symbiosis with nitrogen (N) fixing bacteria and high levels of protein. Thus, it has potential for animal feed and green manure. In spite of its potential, few cultivars are registered for the species and there is little information in regard to its interaction with N-fixing microorganisms. The aim of this study was to evaluate the effect of inoculation with rhizobium strains on the growth and concentration of N in Cratylia argentea. Seeds were inoculated with two strains of Rhizobium sp.,CR 33 (BR10243) and CR42 (BR10244), and four strains of Bradyrhizobium sp., CR52 (BR10257), CPAC-B10, SEMIA 6464 (BR3262), and SEMIA 6462 (BR3267), and sown in pots filled with sand and vermiculite in a greenhouse. After 150 days we evaluated the number of nodules, shoot and nodules dry matter, total nitrogen and crude protein contents for the shoots. The plants inoculated with CR 52 exhibited nodulation, with nodular efficiency of 0.189 and relative efficiency of 66.14%; it is possible to observe the effect of nodulation as of 85 days after sowing. Based on the obtained results it was identified the strain that showed symbiosis with C. argentea and presents potential to be used as a commercial inoculant.

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“…Melo and Zilli (2009) showed that the interference of soil and climate factors reduced the nodulation of V. unguiculata plants grown in the field compared to those grown in a greenhouse. The success in nodulation of leguminous plants is a complex process that depends on different environmental factors, such as amount of available P (Abbasi et al, 2008), presence of other leguminous plants nearby (Nascimento et al, 2008), soil acidity (Meghvansi et al, 2005), interaction with microorganisms (Azcón-Aguilar and Barea, 2015), and water and heat stresses (Silva et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

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2018

Aust J Crop Sci

0

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Cratylia argentea is a neotropical leguminous shrub that exhibits symbiosis with nitrogen (N) fixing bacteria and high levels of protein. Thus, it has potential for animal feed and green manure. In spite of its potential, few cultivars are registered for the species and there is little information in regard to its interaction with N-fixing microorganisms. The aim of this study was to evaluate the effect of inoculation with rhizobium strains on the growth and concentration of N in Cratylia argentea. Seeds were inoculated with two strains of Rhizobium sp.,CR 33 (BR10243) and CR42 (BR10244), and four strains of Bradyrhizobium sp., CR52 (BR10257), CPAC-B10, SEMIA 6464 (BR3262), and SEMIA 6462 (BR3267), and sown in pots filled with sand and vermiculite in a greenhouse. After 150 days we evaluated the number of nodules, shoot and nodules dry matter, total nitrogen and crude protein contents for the shoots. The plants inoculated with CR 52 exhibited nodulation, with nodular efficiency of 0.189 and relative efficiency of 66.14%; it is possible to observe the effect of nodulation as of 85 days after sowing. Based on the obtained results it was identified the strain that showed symbiosis with C. argentea and presents potential to be used as a commercial inoculant.

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Nodulação e produção do caupi (Vigna unguiculata L. Walp) sob efeito de plantas de cobertura e inoculação

Cited by 6 publications

References 18 publications

Eficiência agronômica de estirpes de rizóbio inoculadas em feijão-caupi no Cerrado, Gurupi-TO

Eficiência agronômica de estirpes de rizóbio inoculadas em feijão-caupi no Cerrado, Gurupi-TO

Response of Cratylia argentea (Desvaux) O. Kuntzeto inoculation with Rhizobium sp. and Bradyrhizobium sp. strains

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