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Efficient inoculation of diazotrophic bacteria into sugarcane by the drip irrigation system PAB
Simões,Welson Lima; Oliveira,Anderson Ramos de; Souza,Moises Alves de; Reis,Verônica Massena; Ivan Fernandes-Júnior,Paulo.
Abstract: The objective of this work was to assess the efficiency of the inoculation of a diazotrophic bacterial consortium by the drip irrigation system into sugarcane (Saccharum spp.), in the Brazilian semiarid region. The evaluated treatments were: standard inoculation by submersion; one or two inoculations by drip irrigation; nitrogen (urea) applied by fertigation; and negative controls, without inoculation or nitrogen fertilization. Leaf gas exchanges and plant growth and yield were assessed. Inoculation by irrigation is efficient for all variables, and double inoculation by the drip irrigation system stands out, increasing stem yield in 16% when compared with the negative control, without differing from the treatment with nitrogen fertilizer.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological nitrogen fixation; Brazilian semiarid region; Inoculant; Plant-growth promoting bacteria.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000103304
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Evaluation of the biological nitrogen fixation contribution in sugarcane plants originated from seeds and inoculated with nitrogen-fixing endophytes BJM
Canuto,Erineudo de Lima; Oliveira,André Luis Martinez de; Reis,Verônica Massena; Baldani,José Ivo.
The inoculation technique with endophytic diazotrophic bacteria in sugarcane has been shown as an alternative practice to plant growth promotion. The aim of this work was to evaluate the biological nitrogen fixation (BNF) contribution by different strains of Herbaspirillum seropedicae and Gluconacetobacter diazotrophicus in sugarcane plant inoculated from seeds. The seeds were planted in pots filled with non-sterile soil, inoculated with the bacterial strains and grown 10 months outside of the greenhouse. The BNF contribution of the inoculated bacteria varied depending on the plant species used as a control. The highest BNF contribution as well as the highest populations of reisolated bacteria was observed with inoculation of H. seropedicae strains. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Endophytic diazotrophic bacteria; Sugarcane; Biological nitrogen fixation; Herbaspirillum seropedicae; Gluconacetobacter diazotrophicus.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500021
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Response of micropropagated sugarcane varieties to inoculation with endophytic diazotrophic bacteria BJM
Oliveira,André Luiz Martinez de; Canuto,Erineudo de Lima; Reis,Verônica Massena; Baldani,José Ivo.
Previous studies estimated that sugarcane could obtain up to 60% of total nitrogen accumulated from BNF. Here a mixture of five endophytic diazotrophic strains was tested in a field trial, inoculated in two micropropagated sugarcane varieties and three locals, to determine the effects on commercial crop conditions. The sugarcane plantlets were inoculated in vitro, and after 17 months of growing in the field, the productivity and BNF contribution showed to be influenced by the plant genotype and soil type. The highest BNF contributions was observed in the poorest soil for both varieties. Smaller increases in productivity were observed for SP 701143 variety grown in soil with low or medium fertility. In contrast, a decrease in the stem productivity was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Endophytic bacteria inoculation; Biological nitrogen fixation; Plant growth promotion bacteria; Sugarcane.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500020
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Restrição do 16S-23S DNAr intergênico para avaliação da diversidade de Azospirillum amazonense isolado de Brachiaria spp. PAB
Reis Junior,Fábio Bueno dos; Reis,Verônica Massena; Teixeira,Kátia Regina dos Santos.
O objetivo deste trabalho foi avaliar a diversidade intra-específica de isolados de Azospirillum amazonense e estabelecer a possível influência de diferentes espécies de Brachiaria ssp. e diferentes condições edafoclimáticas. A caracterização da diversidade desses isolados foi conduzida, utilizando-se a análise de restrição da região intergênica 16S-23S DNAr. As estirpes estudadas separaram-se em dois grupos, definidos a 56% de similaridade. As espécies de Brachiaria ssp. influenciaram a diversidade de estirpes. A maioria dos isolados oriundos de B. decumbens e B. brizantha está inserida no primeiro grupo, enquanto os oriundos de B. humidicola concentram-se no segundo grupo.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fixação biológica de nitrogênio; Bactérias diazotróficas; Ecologia microbiana; Pastagens.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000300009
Registros recuperados: 4
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