In the face of world pressure, the Brazilian sugar-energy sector has been optimizing and using more sustainable agricultural practices. Among them is the planting of new varieties, such as energy cane, i.e., hybrids of Saccharum spp. used for biomass production, showing higher fiber and biomass content, less edaphoclimatic requirements, and more resistance to pests and diseases. In addition to the use of these new varieties, optimizing management practices that encompass the crop production cycle, such as the use of nitrogen fertilizers by the industry, is necessary for the efficiency of the system. These fertilizers are known to be responsible for N2O emissions. Plants use less than 50% of the applied fertilizer, so at least twice as much as it is necessary to be applied for crop growth and production, and what is not absorbed remains in the soil or gets lost into the atmosphere. The reuse of agro- industrial residues also is a major differential of the sugar-energy sector because it promotes cost reduction and prevents incorrect disposal. Biochar or pyrogenic coal are also possibilities besides vinasse and straw, already widespread. In this context, we will present a study that aims to propose mainly microbiological indicators as a function of energy cane response to nitrogen fertilizer doses and application of co-products from the sugar-energy industry (vinasse and biochar) to mitigate GHG of anthropogenic origin to reduce the contribution of agriculture to global warming.
Dr. Mara Regina Moitinho Graduated in Biological Sciences at the Centro Universitário da Grande Dourados (2010), MSc in Agronomy (Soil Science) from the Universidade Estadual Paulista Júlio de Mesquita Filho (2013), PhD in Agronomy (Soil Science) from the Universidade Estadual Paulista Júlio de Mesquita Filho (2017), postdoctoral fellow in Agronomy (Soil Science) at the Universidade Estadual Paulista Júlio de Mesquita Filho (2018), postdoctoral fellow in Agronomy (Soil Microbiology) at the Institut National de la Recherche Agronomique (INRAE – Dijon, France) (2020), with postdoctoral studies in progress in the area of Soil Sustainability at the National Biorenovables Laboratory (LNBR), Campinas, SP. She has experience in the area of Agroecology, with an emphasis on agroforestry systems, green manure, characterization of soil CO2 and N2O emissions according to soil physical, chemical, and microbiological attributes and classical and multivariate statistics.