Plantas de cobertura e adubação nitrogenada na produção de milho em sistema de plantio direto

Albuquerque, Abel W. de; Santos, João Filipe; Filho, Gilson Moura; Reis, Lígia Sampaio

doi:10.1590/s1415-43662013000700005

Cited by 29 publications

(32 citation statements)

References 14 publications

(18 reference statements)

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“…Considering the influence of the environment on plant height (Albuquerque et al, 2013), co-inoculation may have promoted greater plant growth in diameter and lower growth in length, thus reducing ear insertion height. This is due to the production of phytohormones that stimulate root development and the absorption of nutrients by the plant (Dobbelaere et al, 2003;Alves et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Co-inoculation of Azospirillum brasilense and Herbaspirillum seropedicae in maize

Dartora

Marini

Gonçalves

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TBacteria from the genera Azospirillum and Herbaspirillum have been associated with increments in maize yield. The aim of this study was to evaluate the maize yield and nutritional content in response to inoculation with A. brasilense and H. seropediceae in association with nitrogen (N) fertilization. The experimental design was randomized blocks in a 4 x 5 factorial scheme, with four replicates. The treatments consisted of seed inoculation (control without N and inoculation, A. brasilense strain -AbV5, H. seropediceae strain -SMR1 and co-inoculation AbV5 + SMR1) and N doses (0, 40, 80, 120 and 160 kg ha -1 ). The following variables were evaluated: ear insertion height, ear length, ear diameter, number of rows per ear, number of grains per row, ear weight, yield and NPK contents in leaves and grains. There was no interaction between the factors studied. Co-inoculation with the strains promoted increments of 12% in leaf P content, compared with control, and N fertilization promoted increase in yield and leaf P content up to the maximum dose studied.Co-inoculação de Azospirillum brasilense e Herbaspirilum seropediceae na cultura do milho R E S U M O Bactérias dos gêneros Azospirillum e Herbaspirillum têm sido associadas à obtenção de incrementos na produtividade do milho. O objetivo deste estudo foi avaliar a produtividade e o teor nutricional do milho em resposta à inoculação de A. brasilense e H. seropedicae em associação com a adubação nitrogenada. O experimento foi conduzido em delineamento experimental de blocos ao acaso em esquema fatorial 4 x 5 com quatro repetições. Os tratamentos foram constituídos da inoculação de sementes (controle -sem N e sem inoculação, estirpe de A. brasilense -AbV5, estirpe de H. seropedicae -SmR1 e coinoculação AbV5 + SmR1) e doses de N (0, 40, 80, 120 e 160 kg ha -1 N). Foram avaliados: altura de inserção da espiga, comprimento e diâmetro da espiga, número de fileiras por espiga e de grãos por fileira, massa de espiga, produtividade e teores de NPK em folhas e grãos. Não houve interação entre os fatores em estudo. A coinoculação de estirpes proporcionou incremento de 12% no teor de P foliar em relação ao controle e a adubação nitrogenada proporcionou incremento na produtividade e teor de P foliar até a máxima dose estudada.

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Section: Resultsmentioning

confidence: 99%

Co-inoculation of Azospirillum brasilense and Herbaspirillum seropedicae in maize

Dartora

Marini

Gonçalves

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…In this study, the plants that presented secondary ears did not presented them grainless, thus contributing to higher productivity. Albuquerque et al (2013) highlighted the positive effect of nitrogen fertilization on the increase in the number of grains per hectare, conditioning to increased productivity.…”

Section: Resultsmentioning

confidence: 99%

Corn Development and Production in Function of Sources of Nitrogen Fertilizers and Doses

et al. 2016

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-Nitrogen (N) is one of the nutrients that have the most significant effect on corn grain productivity increase. In order to evaluate the effect of sources of N topdressing and doses in the grown corn culture, in a conventional till system, it was installed an experiment in the city of Urutaí, Goiás, in the 2012/13 crop, in clayey textured Red Latosol. The experimental design was a randomized complete block design with four replications, with the treatments arranged in a factorial 3 x 5, consisting of three sources (coated urea, urea and ammonium sulfate) and five doses (0, 60, 120, 180 and 240 kg ha -1 ) of N, topdressing, applied in the surface and in a single dose, when the corn plants were in V 4 stage. The hybrid used was the P3646H. We evaluated the following characters: stem diameter, plant height, height of ear insertion, leaf N, number of ears per plant, ear length, number of rows per ear, number of grains per row, 100 grains mass and grain productivity. All characters have a response to nitrogen fertilization and only the height of ear insertion showed no significant difference between sources. The source coated urea showed the best results, indicating that its use may be compensatory, especially in favorable conditions for the NH 3 volatilization, as the application of high doses of N in the surface.

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“…Thus, the inoculation of PGPB may have promoted an effect similar to that of N fertilization, stimulating the development of plant roots and their potential of absorption of nutrients (Albuquerque et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Maize response to inoculation with strains of plant growth-promoting bactéria

Dartora

Guimarães

Menezes

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe aim of this study was to evaluate the response of maize to inoculation with strains of plant growth-promoting bacteria (PGPB) in two cultivation years. The experiment was set in a randomized block design with four replicates in two cultivation years (2012/13 and 2013/14). The treatments consisted of PGPB inoculation: control (without N and without inoculation); 30 kg of N ha -1 at sowing (N1); 160 kg of N ha -1 (N1 + 130 kg of N ha -1 as top-dressing); N1 + A. brasilense, Ab-V5; N1 + A. brasilense, HM053; N1 + Azospirillum sp. L26; N1 + Azospirillum sp. L27; N1 + Enhydrobacter sp. 4331; N1 + Rhizobium sp. 8121. Basal stem diameter, plant height, leaf area, shoot dry matter and yield were evaluated. The strain of Rhizobium sp. 8121and the isolate Azospirillum sp. L26 associated with 30 kg of N ha -1 at sowing promoted yields equivalent to that of the N fertilization of 160 kg ha -1 , demonstrating the potential to be used in the inoculation of maize seeds.Resposta do milho à inoculação de estirpes de bactérias promotoras do crescimento de plantas R E S U M O Neste trabalho objetivou-se avaliar a resposta do milho à inoculação de estirpes de bactérias promotoras do crescimento de plantas (BPCP's) em dois anos de cultivo. O experimento foi conduzido em delineamento experimental de blocos ao acaso com quatro repetições em dois anos de cultivo (2012/13 e 2013/14). Os tratamentos foram constituídos pela inoculação de BPCP's: controle (sem N e sem inoculação); 30 kg ha -1 N na semeadura (N1); 160 kg ha -1 N (N1 + 130 kg ha -1 N em cobertura); N1 + A. brasilense, Ab-V5; N1 + A. brasilense, HM053; N1 + Azospirillum sp., L26; N1 + Azospirillum sp., L27; N1 + Enhydrobacter sp. 4331; N1 + Rhizobium sp. 8121. Diâmetro basal do colmo, altura da planta, área foliar, massa seca da parte aérea e produtividade foram avaliados. A estirpe de Rhizobium sp. 8121 e o isolado de Azospirillum sp. L26 associados à adubação com 30 kg ha -1 N na semeadura proporcionaram produtividades equivalentes à adubação com 160 kg ha -1 N demonstrando potencial para serem utilizadas na inoculação de sementes de milho.

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Plantas de cobertura e adubação nitrogenada na produção de milho em sistema de plantio direto

Cited by 29 publications

References 14 publications

Co-inoculation of Azospirillum brasilense and Herbaspirillum seropedicae in maize

Co-inoculation of Azospirillum brasilense and Herbaspirillum seropedicae in maize

Corn Development and Production in Function of Sources of Nitrogen Fertilizers and Doses

Maize response to inoculation with strains of plant growth-promoting bactéria

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