10 results on '"Mamédio, Divaney"'
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2. Inoculación de bacterias promotoras del crecimiento vegetal en Urochloa Ruziziensis
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Duarte, Camila Fernandes Domingues, Cecato, Ulysses, Hungria, Mariangela, Fernandes, Henrique Jorge, Biserra, Thiago Trento, Mamédio, Divaney, Galbeiro, Sandra, and Nogueira, Marco Antônio
- Subjects
Bacterias endofíticas ,Rizobactérias ,Bacterias diazotróficas ,Rizobacterias ,Bactérias diazotróficas ,Gramíneas ,Rhizobacteria ,Grasses ,Endophytic bactéria ,Bactérias endofíticas ,Diazotrophic bactéria - Abstract
Using the potential of growth-promoting bacteria in the growth and perennially of pastures can be a new strategy for managing pastures, minimizing the chances of degradation, and improving productivity and forage quality. Thus, the objective was to evaluate the production of Urochloa ruziziensis inoculated with bacteria that promote plant growth and nitrogen fertilization. Leaf mass production, total forage mass production, root production and chlorophyll content of U. ruziziensis cultivated in soil originating from sandstone and in a sterile substrate were evaluated, inoculated with five BPCV (Azospirillum brasilense Ab-V5 and Ab-V6, Pseudomonas fluorescens CCTB 03 and ET76 and Pantoea ananatis AMG521), in addition to uninoculated control and in combination with N-fertilizer doses (zero, 50 and 100 kg ha-1 of N), in a 6x3 factorial scheme under greenhouse conditions. In general, bacteria when inoculated without the addition of N-fertilizers (zero dose) were more efficient in the production of leaf forage mass in the different cuts, total forage mass, root mass production and crude protein concentration. It is noteworthy that inoculation with P. fluorescens and P. ananatis AMG521 proved to be more effective than the other strains used in the studied variables. The inclusion of bacteria that promote plant growth as pasture management is an excellent tool for growing ruziziensis grass with an increase in the production of forage mass and root mass, in addition to reducing the consumption of nitrogen fertilizers. El uso del potencial de las bacterias promotoras del crecimiento en el crecimiento y la perennialidad de los pastos puede ser una nueva estrategia para el manejo de los pastizales, minimizando las posibilidades de degradación y también mejorando la productividad y la calidad del forraje. Por lo tanto, el objetivo fue evaluar la producción de Urochloa ruziziensis inoculada con bacterias que promueven el crecimiento de las plantas y la fertilización nitrogenada. Se evaluaron la producción en masa de la hoja, la producción total en masa del forraje, la producción de raíces y el contenido de clorofila de U. ruziziensis cultivado en suelo originario de arenisca y en un sustrato estéril, inoculado con cinco BPCV (Azospirillum brasilense Ab-V5 y Ab-V6, Pseudomonas fluorescens CCTB 03 y ET76 y Pantoea ananatis AMG521), además del control no inoculado y en combinación con dosis de N-fertilizante (cero, 50 y 100 kg ha-1 de N), en un esquema factorial 6x3 bajo condiciones de invernadero. En general, las bacterias cuando se inocularon sin la adición de N-fertilizantes (dosis cero) fueron más eficientes en la producción de masa de forraje foliar en los diferentes cortes, la masa total de forraje, la producción de masa de raíz y la concentración de proteína cruda. Es de destacar que la inoculación con P. fluorescens y P. ananatis AMG521 demostró ser más efectiva que las otras cepas utilizadas en las variables estudiadas. La inclusión de bacterias que promueven el crecimiento de las plantas como manejo de pasturas es una herramienta excelente para cultivar pasto ruziziensis con un aumento en la producción de masa de forraje y masa de raíz, además de reducir el consumo de fertilizantes nitrogenados. Utilizar as potencialidades das bactérias promotoras de crescimento no crescimento e perenidade dos pastos pode ser uma nova estratégia de manejo das pastagem minimizando as chances de degradação, e ainda melhorar a a produtividade e qualidade forrageira. Assim, objetivou-se avaliar a produção da Urochloa ruziziensis inoculada com bactérias promotoras do crescimento vegetal e adubação nitrogenada. Foi avalido a produção de massa de folhas, a produção de massa de forragem total, produção de raízes e o teor de clorofila da U. ruziziensis cultivada em solo originário do arenito e em substrato estéril, inoculada com cinco BPCV (Azospirillum brasilense Ab-V5 e Ab-V6, Pseudomonas fluorescens CCTB 03 e ET76 e Pantoea ananatis AMG521), além do controle não inoculado e em combinação com doses de N-fertilizante (zero, 50 e 100 kg ha-1 de N), em um esquema fatorial 6x3 sob condições de casa de vegetação. Em geral, as bactérias quando inoculadas sem adição de N-fertilizantes (dose zero) apresentaram-se mais eficientes na produção de massa de forragem de folhas nos diferentes cortes, massa de forragem total, produção de massa de raízes e concentração de proteína bruta. Destaca-se que a inoculação com as P. fluorescens e P. ananatis AMG521 apresentaram-se mais efetivas que as demais estirpes utilizadas nas variaveis estudadas. A inclusão das bactérias promotoras do crescimento vegetal como manejo de pastagem é uma excelente ferramenta para o cultivo do capim ruziziensis com aumento na produção de massa de forragem e massa de raízes, além de reduzir o consumo de adubos nitrogenados.
- Published
- 2020
3. Ensilaje de parte aérea de araruta (Maranta arundinacea) con inclusión de pulpa cítrica
- Author
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Mamédio, Divaney, Loures, Daniele Rebouças Santana, Barros, Jeskarlandia Silva, and Rocha, Grazielle Ferreira
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Bagaço de laranja ,Bagazo de naranja ,Aditivo ,Orange bagasse ,Alternative food ,Conservação de forragem ,Forage conservation ,Alimento alternativo ,Additive ,Conservación de forraje - Abstract
The aim of this study was to evaluate the chemical composition, dry matter losses and aerobic stability of aerial part silage of araruta whit inclusion of citrus pulp and validate the forage as an alternative source of food for ruminant animals. The experimental design was completely randomized factorial scheme 3x4 (inclusion levels of additive and opening times) with five replications. The inclusion of 30% of additive promoted an increase of 8.5% in the dry matter content to the exclusive silage. Fermented silage compared to the in natura material showed a decrease of the fibrous components. The inclusion of citrus pulp and silo opening times did not influence the non-fibrous carbohydrate content. However, the additive promoted increases in total carbohydrate content of silages. There was no statistical difference for effluent and gas losses. Silage only including 30% citrus pulp had the lowest dry matter recovery. The average maximum temperature reached by the silages was 34.5ºC. The average time for temperature increase was 67 hours for all silages. Aerial part silage of araruta can be used in animal feed, and is a potential forage resource for use in semiarid region. El objetivo de este estudio fue evaluar la composición química, las pérdidas de materia seca y la estabilidad aeróbica de del ensilaje de parte aérea de araruta con inclusión de pulpa de cítricos, así como validar el forraje como una fuente alternativa de alimento para animales rumiantes. Se utilizó un diseño completamente aleatorizado en un esquema factorial 3x4 (niveles de inclusión de aditivo y tiempos de apertura) con cinco repeticiones. La inclusión del 30% del aditivo promovió un aumento del 8,5% en el contenido de materia seca al ensilaje exclusivo. El ensilado fermentado en comparación con el material in natura, mostró una disminución de los componentes fibrosos. La inclusión de pulpa de cítricos y los tiempos de apertura del silo no influyeron en el contenido de carbohidratos no fibrosos. Sin embargo, el aditivo promovió aumentos en el contenido total de carbohidratos de los ensilajes. No hubo diferencias estadísticas para las pérdidas de efluentes y gases. Solo el ensilaje con inclusión de un 30% de pulpa de cítricos tuvo la menor recuperación de materia seca. El promedio alcanzado de temperatura máxima por los ensilajes fue de 34,5ºC. El tiempo promedio para el aumento de la temperatura fue de 67 horas para todos los ensilajes. El ensilaje de parte aérea de araruta puede ser utilizado en la alimentación animal, y se constituye un recurso forrajero potencial para el uso en la región semiárida. Objetivou-se com este estudo avaliar a composição química, as perdas de matéria seca e estabilidade aeróbia de silagem de parte aérea de araruta com inclusão de polpa cítrica, assim como validar a forragem como uma fonte alternativa de alimento para animais ruminantes. Foi utilizado o delineamento inteiramente casualizados em esquema fatorial 3x4 (níveis de inclusão de aditivo e tempo de abertura) com cinco repetições. A inclusão de 30% de aditivo promoveu aumento de 8,5% no conteúdo de matéria seca da silagem exclusiva. Foi demonstrado uma diminuição dos componentes fibrosos da massa de silagem quando comparada ao material in natura. A inclusão de polpa cítrica e tempos de abertura dos silos não influenciaram o conteúdo de carboidratos não fibrosos. Porém, o aditivo promoveu aumento no conteúdo total de carboidratos das silagens. Não houve diferença estatística para as perdas de efluentes e gases. Somente a silagem com inclusão de 30% de polpa cítrica teve a menor recuperação de matéria seca. A média de temperatura máxima alcançada na silagem foi de 34,5ºC. o tempo médio para aumento da temperatura foi de 67 horas para todas as silagens. A silagem de parte aérea de araruta pode ser utilizada na alimentação animal e se constitui um recurso forrageiro potencial para o uso na região semiárida.
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- 2020
4. Forage Mass, Tillering, Nutritive Value and Root System of Ruzigrass Inoculated with Plant Growth Promoting Bacteria Associated with Doses of N-Fertilizer
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Barreiros, Artur Roque Domingues, primary, Cecato, Ulysses, additional, Duarte, Camila Fernandes Domingues, additional, Hungria, Mariangela, additional, Biserra, Thiago Trento, additional, Silva, Diogo Rodrigues da, additional, Mamédio, Divaney, additional, Sanches, Renan, additional, and Fernandes, Henrique Jorge, additional
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- 2020
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5. Do plant-growth promoting bacteria contribute to greater persistence of tropical pastures in water deficit? - A review
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Mamédio, Divaney, primary, Cecato, Ulysses, additional, Sanches, Renan, additional, Silva, Sillas Mayron da Silva da, additional, Silva, Diogo Rodrigues da, additional, Rodrigues, Valdir Oliveira, additional, Galbeiro, Sandra, additional, Barreiros, Artur Roque Domingues, additional, and Vicente, João Vitor da Rosa, additional
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- 2020
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6. Azospirillum spp. en gramíneas y forrajeras. Revisión
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Fernandes Domingues Duarte, Camila, primary, Cecato, Ulysses, additional, Biserra, Thiago Trento, additional, Mamédio, Divaney, additional, and Galbeiro, Sandra, additional
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- 2020
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7. Soil management and planting spacing effects on establishment of mixed swards of purple stargrass (Cynodon nlemfuensis cv. BRS Lua) and forage peanut (Arachis pintoi cv. Belmonte) in an area of degraded Brachiaria brizantha
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Mamédio, Divaney, primary, Soares de Andrade, Carlos Maurício, additional, Ferreira Sampaio, Aliedson, additional, and Santana Loures, Daniele Rebouças, additional
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- 2020
- Full Text
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8. Forage Mass, Tillering, Nutritive Value and Root System of Ruzigrass Inoculated with Plant Growth Promoting Bacteria Associated with Doses of N-Fertilizer
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Barreiros, Artur Roque Domingues, Cecato, Ulysses, Duarte, Camila Fernandes Domingues, Hungria, Mariangela, Biserra, Thiago Trento, Silva, Diogo Rodrigues da, Mamédio, Divaney, Sanches, Renan, Fernandes, Henrique Jorge, Barreiros, Artur Roque Domingues, Cecato, Ulysses, Duarte, Camila Fernandes Domingues, Hungria, Mariangela, Biserra, Thiago Trento, Silva, Diogo Rodrigues da, Mamédio, Divaney, Sanches, Renan, and Fernandes, Henrique Jorge
- Abstract
The aim of this study was evaluating the effect of the inoculation of plant growth promoting bacteria (PGPB) in forage mass, tillering, nutritive value and root system of ruzigrass (Urochloa ruziziensis (R. Germ. & Evrard) Crins (syn. of Brachiaria ruziziensis) associated with doses of N-fertilizer. The bacteria inoculated were Azospirillum brasilense Ab-V5, Pseudomonas fluorescens CCTB03 and Pantoea ananatis AMG 521, plus the control treatment (non-inoculated), associated with doses of N-fertilizer (0, 50 and 100 kg N ha-1). The experiment was performed in a randomized block design, in a 4x3 factorial scheme, with four replicates, totaling 48 plots (12 m2). There were no effects of the PGPB and the use of N-fertilizer on the leaf blade, stem+sheath, forage mass, daily and yearly accumulation of forage mass. The PGPB did not have influence on the density of tillers. The doses of 50 and 100 kg of N ha-1 increased the amount of tillers. The AMG 521 strain associated with N-fertilizer provided heavier tillers. There was no effect of the PGPB on crude protein (CP), neutral detergent fiber (NDF), as well as acid detergent fiber (ADF), and in vitro digestibility of the dry matter (IVDDM). The use of 100 kg of N ha-1 contributed to an increase in CP and a decrease in NDF. The AMG 521 strain contributed to a smaller diameter of the root. Strains CCTB03 and AMG 521 demonstrated a smaller area, length and root density when associated with the dose of 50kg of N ha-1. In general, the PGPB were not efficient in promoting productive increments in ruzigrass.
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- 2020
9. Estudo da percepção ambiental como ferramenta de sensibilização à redução da caça de animais silvestres na Reserva Florestal Mata de Cazuzinha, Cruz das Almas-BA
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Mamédio, Divaney, primary, Pugas, Adevan Da Silva, additional, and Delgado Mendez, Jesus Manuel, additional
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- 2019
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10. Azospirillum spp. in grasses and forages. Review.
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Duarte, Camila Fernandes Domingues, Cecato, Ulysses, Biserra, Thiago Trento, Mamédio, Divaney, and Galbeiro, Sandra
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AZOSPIRILLUM , *FORAGE , *FORAGE plants , *GRASSES , *MASS production , *PLANT roots , *NITROGEN fertilizers ,CORN growth - Abstract
The Azospirillum genus includes plant growth-promoting bacteria found in different soil regions worldwide. When associated with plant roots these bacteria help augment productivity by increasing both the aerial and root portions. These benefits derive from excretion of growth phytonutrients, especially auxins. Use of Azospirillum spp. can help to bridge the gap between productivity and sustainability since inoculants based on this microorganism can reduce use of nitrogen fertilizers without affecting productivity, and generate savings and greater profitability. Inoculation of Azospirillum spp. strains with forage grasses can result in greater forage mass gains and less need for nitrogen fertilizer, improving pasture production system sustainability. Co-inoculation with other strains such as Bradyrhizobium sp. apparently potentiates growth promotion. Proper application methods must be followed for these growth-promoting bacteria to be effective. Growth promotion in response to Azospirillum has been described in grasses such as sugarcane, maize and forages, but further research is needed under different conditions to support adoption by producers. Application of bacterial inoculates can increase competitiveness vis-'-vis conventional agriculture methods. Inoculation of grasses in livestock systems can raise forage mass production, mitigate degradation risks and improve productive indices. [ABSTRACT FROM AUTHOR]
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- 2020
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