Efeito da inoculação de Azospirillum e Herbaspirillum na produção de compostos indólicos em plântulas de milho e arroz

Radwan, Tharwat; Kamel, Zeinat; Reis, Verônica Massena

doi:10.1590/s0100-204x2004001000006

Cited by 56 publications

(36 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The nitrogen-fixing bacteria in association with plant roots, including forage, may assist in root growth and, therefore, plant growth by promoting substances such as phytohormones (Kuklinsky-Sobral et al, 2004;Pedraza, et al, 2004;Radwan et al, 2004). Thus, endophytic diazotrophic bacteria associated to plants may represent a promising alternative in promoting plant growth and soil management and, consequently, environmental quality.…”

Section: Resultsmentioning

confidence: 99%

Nutritional characteristics of marandu grass (Brachiaria brizantha cv. marandu) subjected to inoculation with associative diazotrophic bacteria

Guimarães¹,

Santos²,

Bonfim-Silva³

et al. 2016

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

Due to the search for viable and cost-effective ways to provide nitrogen for forage grasses, inoculation with diazotrophs presents high potential as an alternative to plant nutrition by reducing the use of nitrogen fertilizers. The objective of this work was to evaluate the nutrition of marandu grass (Brachiaria brizantha cv. marandu) subjected to inoculation with associative diazotrophic bacteria grown in Cerrado soil (Brazilian Savanna). The experiment was conducted in a greenhouse with a completely randomized design using five treatments (three strains of associative nitrogen fixing bacteria [MTH2, MTB1 and Y2], an inoculant formed by combination of strains AbV5 and AbV6 (Azospirillum brasilense) and a control (100 mg dm -3 of N-urea]) and five replications, totaling 25 experimental units. The inoculation was performed by inserting a 5 mL aliquot of bacterial broth containing 10 9 cells mL -1 in the soil near the root system of each plant. Three cuts were made at 30, 60 and 90 days after sowing. The variables: Falker chlorophyll index, nitrogen concentration in shoots and roots and crude protein in shoots of marandu grass were evaluated. The highest values for Falker chlorophyll index, nitrogen concentration, and crude protein were observed in the three cuts in plants that received N fertilization. The MTH2 strain positively influenced the nitrogen concentration in shoots and roots, and crude protein in shoots in the first and second cuts of marandu grass, whereas in the third cut, these parameters were influenced by nitrogen fertilization. In conclusion, the inoculation with associative diazotrophic bacteria may contribute positively to the nitrogen nutrition of marandu grass.

show abstract

Section: Resultsmentioning

confidence: 99%

Nutritional characteristics of marandu grass (Brachiaria brizantha cv. marandu) subjected to inoculation with associative diazotrophic bacteria

Guimarães¹,

Santos²,

Bonfim-Silva³

et al. 2016

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

show abstract

“…The bacteria of the Azospirillum genus, also considered as plant growth-promoting bacteria (PGPB), besides promoting biological N fixation (Perrig et al, 2007), synthesize hormones such as auxin, which stimulates shoot and root growth of various grass crops, including rice (Radwan et al, 2004); however, studies involving this crop with the use of inoculants and the various forms of inoculation are still scarce.…”

Section: Introductionmentioning

confidence: 99%

Doses and application methods of Azospirillum brasilense in irrigated upland rice

Garcia

Arf

Portugal

et al. 2016

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

The study was carried out in Selvíria-MS, in the 2011/12 and 2012/13 agricultural years, aiming to evaluate the efficiency of Azospirillum brasilense in nitrogen fixation in upland rice, as a function of doses and application methods of the inoculant containing this diazotrophic bacterium. The experimental design was randomized blocks, arranged in a 4 x 4 factorial scheme, with 4 doses of inoculant (control without inoculation, 100, 200 and 300 mL of the commercial product ha-1) and 4 application methods (seed inoculation, application in the sowing furrow, soil spraying after sowing, and foliar spraying at the beginning of plant tillering), with 4 replicates. During the experiment, the agronomic characteristics, production components and yield of the rice crop were evaluated. It was concluded that the inoculant containing Azospirillum brasilense promotes increase (19%) in the yield of upland rice under sprinkler irrigation when used at the dose of 200 mL ha-1, regardless of the application methods.

show abstract

“…Dentre as bactérias capazes de fixar o N 2 , as do gênero Azospirillum destacam-se nas associações com gramíneas (Radwan et al, 2004).…”

Section: Introductionunclassified

Produtividade Do Trigo Irrigado Submetido À Aplicação De Nitrogênio E À Inoculação Com Azospirillum Brasilense

Nunes

Aquino

Santos

et al. 2015

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

E-mail: leonardo.aquino@ufv.br resumo inocular sementes de trigo com Azospirillum brasilense pode ser benéfico à cultura do trigo, bem como reduzir a necessidade de aplicação de n. no entanto, são escassos trabalhos que mensurem o benefício dessa prática no trigo irrigado com expectativa de alta produtividade e demanda de n. objetivou-se com este trabalho avaliar a produtividade e o conteúdo de n na planta do trigo irrigado, submetido a doses de n, com ou sem a inoculação com A. brasilense. Foram conduzidos dois experimentos em 2011 e repetidos em 2012. em cada ano de cultivo, instalou-se um experimento na área considerada de baixa disponibilidade de n no solo (cultivo em sucessão ao milho) e outro na com alta disponibilidade (cultivo em sucessão à soja ou cenoura). Os tratamentos consistiram de cinco doses de N e da inoculação ou não com A. brasilense. as doses de n testadas foram 20, 60, 100, 140 e 180 kg ha -1 na área com baixa disponibilidade de n e 20, 50, 80, 110 e 140 kg ha -1 na com alta disponibilidade. o teor de n na folha índice foi aumentado pela inoculação com A. brasilense. entretanto, o N absorvido não foi influenciado pela inoculação da bactéria. As doses de N aumentaram a produtividade do trigo e esse aumento foi mais evidente no cultivo na área com baixa disponibilidade de n no solo. palavras-chave: Triticum aestivum L., fixação de N 2 , bactérias diazotróficas.Recebido para publicação em 24 de junho de 2014 e aprovado em 7 de outubro de 2014.

show abstract

Efeito da inoculação de Azospirillum e Herbaspirillum na produção de compostos indólicos em plântulas de milho e arroz

Cited by 56 publications

References 26 publications

Nutritional characteristics of marandu grass (Brachiaria brizantha cv. marandu) subjected to inoculation with associative diazotrophic bacteria

Nutritional characteristics of marandu grass (Brachiaria brizantha cv. marandu) subjected to inoculation with associative diazotrophic bacteria

Doses and application methods of Azospirillum brasilense in irrigated upland rice

Produtividade Do Trigo Irrigado Submetido À Aplicação De Nitrogênio E À Inoculação Com Azospirillum Brasilense

Contact Info

Product

Resources

About