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Bacteria promoting plant growth in the development of Urochloa grass hybrid cv. Mavuno

Grant number: 19/03313-6
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): May 01, 2019
Effective date (End): June 30, 2020
Field of knowledge:Agronomical Sciences - Animal Husbandry - Pastures and Forage Crops
Principal Investigator:Cecilio Viega Soares Filho
Grantee:Isadora Mandolesi Valvano
Host Institution: Faculdade de Medicina Veterinária (FMVA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil


The use of alternative strategies that promote improvements in animal production, especially management that associate sustainability with profitability, should be given priority. Thus, the use of growth-promoting bacteria (GPB) and nitrogen fixers in forage grasses can be an important management alternative in the present day for improved pasture production and, consequently, animal production. The working hypothesis is that with the use of GPB we will be able to reduce the nitrogenous fertilization and to mitigate the effects of greenhouse gases. The objective of this work was to evaluate the productive characteristics, tillering, nutritive value, root mass, relative chlorophyll content index (SPAD) and total nitrogen accumulation in hybrid Urochloa cv Mavuno inoculated with BPC of plants and nitrogen fertilization. The experiment will be carried out in plots in a randomized block design, with four repetitions, in a 3x3 factorial scheme. Three bacteria with or without nitrogen fertilization (25 and 50 kg ha-1 N) will be tested in 9 m2 plots, totaling 9 treatments. GPB will be applied to seed, distributed on the soil at planting. Forage evaluation will be performed by determining the forage mass production, morphological composition, population density of tillers, nutritional value and leaf/stem ratio. The work should allow the recommendation and formulation of new technology for sustainable pasture production.

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