Nutrients Uptake in Shoots and Biomass Yields and Roots and Nutritive Value of Zuri Guinea Grass Inoculated with Plant Growth-promoting Bacteria

Sá, Geovana C. R.; Hungría, Mariangela; Carvalho, Caroline Lopes Monteiro de; Moreira, Adônis; Nogueira, Marco Antônio; Heinrichs, Reges; Filho, Cecílio Viega Soares

doi:10.1080/00103624.2019.1689256

Cited by 7 publications

(3 citation statements)

References 49 publications

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“…B.K.Simon & Jacobs (syn. Panicum maximum) genotypes Zuri Guinea (Sá et al 2019b) and Mombassa (Leite et al 2019a). However, the great majority of the pastures in Brazil and worldwide is already established, and nothing is known on the feasibility of inoculation of PGPB to boost plant growth and forage biomass production under these conditions.…”

Section: Introductionmentioning

confidence: 99%

Seed and leaf-spray inoculation of PGPR in brachiarias (Urochloa spp.) as an economic and environmental opportunity to improve plant growth, forage yield and nutrient status

et al. 2021

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Purpose Brazil has 180 Mha of pastures, 86 Mha occupied with Urochloa spp. (syn. Brachiaria), and 70% in some level of degradation. Inoculation with plant-growth-promoting bacteria (PGPR) may represent an economic and environmental feasible strategy to improve pasture production. Methods Two greenhouse and seven field trials were performed to verify the effects of seed inoculation at sowing or leaf-spray inoculation in established pastures of Urochloa with elite strains of Azospirillum brasilense and Pseudomonas fluorescens. All plants received nutrients including 40 kg ha−1 of N at sowing, and half of the treatments a supply of 40 kg ha−1 of N 30 days after emergence. Results A. brasilense increased shoot biomass by an average of 16.8% with both seed and leaf-spray inoculation, whereas P. fluorescens increased by 15.2 and 14.2%, respectively, always higher with the extra supply of N. Seed and leaf-spray inoculation with A. brasilense increased N content by an average of 11.7 and 20.7%, and K by 9.9 and 11.3%, respectively; for P. fluorescens average increases were of 33.3 and 36.6% for P, and of 10.6 and 13.6% for K, respectively. Benefits were mainly attributed to improvements in root architecture by the synthesis of phytohormones. Biological nitrogen fixation in A. brasilense, P acquisition (solubilization of phosphates and siderophores synthesis) and ACC-deaminase in P. fluorescens also contributed to plant growth and nutrient status. Conclusion Inoculation with elite PGPR strains translated into more fodder and improved nutritional value of feed for livestock, representing a promising and environmentally-friendly strategy for tropical pastures.

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Section: Introductionmentioning

confidence: 99%

Seed and leaf-spray inoculation of PGPR in brachiarias (Urochloa spp.) as an economic and environmental opportunity to improve plant growth, forage yield and nutrient status

et al. 2021

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“…According to Resende and collaborators [2], he effects of inoculation with A. brasilense strains (Ab-V5 + Ab-V6) and with R. tropici + Ab-V6 in maize, increases in height and consequently in production of dry mass of the aerial part of the plants were found in relation to the control treatment without inoculation. Evaluating the agronomic response of triticale culture to different forms of application of strains of Azospirillum, Sipione and collaborators [41] did not find positive effects of leaf inoculation for height, stem dry matter and shoot dry matter.…”

Section: Shoot Dry Weight Yields and Numbers Tillers And Relative Chlmentioning

confidence: 95%

Nitrogen in Shoots, Number of Tillers, Biomass Yield and Nutritive Value of Zuri Guinea Grass Inoculated with Plant-Growth Promoting Bacteria

Filho

Carvalho²,

Hungría³

et al. 2020

Int J Innov Educ Res

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The objective of this study was to evaluate the effects of plant growth-promoting bacteria (PGPB) strains of Azospirillum brasilense, Pseudomonas fluorescens and Rhizobium tropici on biomass yield, number of tillers, nitrogen accumulation and nutritive value of shoots of Megathyrsus (syn. Panicum) maximus cultivar BRS Zuri (Zuri Guinea grass). For that, one experiment was performed for 14 months to evaluate inoculation and re-inoculation with Azospirillum brasilense strains Ab-V5 and Ab-V6, Pseudomonas fluorescens strain CCTB 03 and of co-inoculation with Rhizobium tropici strain CIAT 899 + A. brasilense strain Ab-V6 combined with N-fertilizer (100 kg of N ha-1). Shoot dry weight yield (SDWY), number of tillers (NT), total N concentration (TNC), total N uptake (TNU) and nutritive value of Zuri Guinea grass was evaluated for eight cuts, and inoculation increased all parameters. In the NT, the treatments inoculated with PGPB were superior to the positive non-inoculated control receiving N-fertilizer, by up to 36%. For the accumulated of SDWY the treatment re-inoculated with P. fluorescens CCTB 03 after each cut was statistically superior tin 7% the positive control. The PGPB when combined N-fertilizer also increased SDWY, NT, the relative chlorophyll index, TNC, total N uptake, neutral detergent fiber, acid detergent fiber, crude protein and in vitro digestibility dry matter of Zuri Guinea grass. The results indicate that PGPB can represent a sustainable alternative for reducing the use of N-fertilizers. The lower effects of re-inoculation with PGPB on the nutrition or yield of Zuri Guinea grass, demonstrating that the determination of the method of application and periodicity of inoculation still require investigation.

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“…Cuando los biofertilizantes se han aplicado junto con una fuente de N sintético, se han logrado respuestas superiores o equivalentes a la aplicación del 100 % del requerimiento de N por una absorción más eficiente, reduciéndose las pérdidas de N causadas por lixiviación hasta en un 95 % (36) . Los mejores resultados en términos productivos y económicos se han observado con la aplicación combinada del inoculante y N (36)(37)(38)(39)(40) .…”

Section: Biofertilizantes Constituidos Por Diazótrofas Que Han Sido U...unclassified

Contribution of forage grasses to biological nitrogen fixation and their response to diazotroph inoculation. Review

Fonseca López,

Vivas Quila,

Cuervo Mulet

et al. 2024

Rev. Mex. Cienc. Pecu.

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El uso de insumos de origen químico ha generado pérdida de la diversidad microbiana que interviene en el ciclo del N como bacterias diazótrofas, que son inhibidas por saturación de los receptores encargados de activar la nitrogenasa. La fijación biológica de nitrógeno (FBN) en gramíneas forrajeras puede ser utilizada como servicio ecosistémico. El objetivo de este artículo de revisión fue analizar la contribución de gramíneas forrajeras a la FBN y su respuesta a la inoculación de diazótrofas no simbióticas para encontrar oportunidades de estudio. El análisis de la información se realizó a partir de la metodología prisma de revisiones sistemáticas y meta-análisis. Se destaca que las principales especies forrajeras que contribuyen con la FBN corresponden a Brachiaria sp. y Pennisetum sp. La inoculación de Azospirillum sp. ha generado efecto promotor de crecimiento en gramíneas, pero, la respuesta del forraje inoculado depende principalmente de la sinergia entre planta – bacteria presentándose efectos neutros, antagónicos y positivos.

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Nutrients Uptake in Shoots and Biomass Yields and Roots and Nutritive Value of Zuri Guinea Grass Inoculated with Plant Growth-promoting Bacteria

Cited by 7 publications

References 49 publications

Seed and leaf-spray inoculation of PGPR in brachiarias (Urochloa spp.) as an economic and environmental opportunity to improve plant growth, forage yield and nutrient status

Seed and leaf-spray inoculation of PGPR in brachiarias (Urochloa spp.) as an economic and environmental opportunity to improve plant growth, forage yield and nutrient status

Nitrogen in Shoots, Number of Tillers, Biomass Yield and Nutritive Value of Zuri Guinea Grass Inoculated with Plant-Growth Promoting Bacteria

Contribution of forage grasses to biological nitrogen fixation and their response to diazotroph inoculation. Review

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