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Strategic practices for mitigating greenhouse gas emissions in grassland systems of the Brazilian Southeast

Grant number: 17/20084-5
Support type:Research Program on Global Climate Change - Thematic Grants
Duration: August 01, 2018 - July 31, 2023
Field of knowledge:Agronomical Sciences - Animal Husbandry - Pastures and Forage Crops
Principal Investigator:Paulo Henrique Mazza Rodrigues
Grantee:Paulo Henrique Mazza Rodrigues
Home Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Co-Principal Investigators:Ladislau Martin Neto
Assoc. researchers:Adibe Luiz Abdalla ; Adriana Marlene Moreno Pires ; Alberto Carlos de Campos Bernardi ; Alessandra Aparecida Giacomini ; Alexandre Berndt ; Alfredo José Barreto Luiz ; André de Faria Pedroso ; Angélica Simone Cravo Pereira ; Augusto Hauber Gameiro ; Carlos Eduardo Pellegrino Cerri ; Cristiano Alberto de Andrade ; Débora Marcondes Bastos Pereira ; Flávia Maria de Andrade Gimenes ; Heloisa Ferreira Filizola ; Ives Cláudio da Silva Bueno ; Jorge Luiz Mazza Rodrigues ; José Ricardo Macedo Pezzopane ; Linda Monica Premazzi ; Luciana Gerdes ; Magda Aparecida de Lima ; Marcos Antonio Vieira Ligo ; Patrícia Perondi Anchão Oliveira ; Paula Marques Meyer ; Paulino Ribeiro Villas Boas ; Rosa Toyoko Shiraishi Frighetto ; Sandro Eduardo Marschhausen Pereira ; Valdo Rodrigues Herling ; Waldssimiler Teixeira de Mattos
Associated scholarship(s):20/04938-7 - Quantification and spectroscopic characterization of dissolved organic matter in soils under pastures and integrated production systems, BP.MS
20/09202-9 - Strategic practices for mitigating greenhouse gas emissions in a pasture system in Southeastern Brazil, BP.TT
19/25536-7 - Strategic practices for mitigating greenhouse gas emissions ín grassland systems of “The Brazilian Southeast, BP.TT
+ associated scholarships 19/17393-1 - Grass and legume intercropping as a strategy for methane mitigation and biological nitrogen fixation (BNF) in the soil, BP.TT
19/19396-8 - Performance, ruminal metabolism and metagenomics of Nellore beef cattle under intensified grassland systems during rainy and dry season, BP.DR
19/18267-0 - Organic matter stabilization mechanisms in tropical soils with carbon sequestration areas: evaluation by physicochemical methods and carbon modeling, BP.DR
19/24512-7 - Strategic practices for mitigating greenhouse gas emissions in grassland systems of the Brazilian Southeast, BP.TT
19/16977-0 - Grass and legume intercropping as a strategy for methane mitigation in cattle stocking, BP.IC
19/11429-4 - Evaluation of forage production, animal performance and mitigation of methane emissions from beef cattle in different pasture systems, BP.MS
17/22950-1 - Dynamics, reactivity ánd structural aspects of soil organic matter under integration crop-livestock-forest systems, BP.PD - associated scholarships

Abstract

The accumulation of Greenhouse Gases (GHG) in the atmosphere remains an important topic of scientific and public interest. The increase in these gases has been considered to be a major cause of global warming. In this context, agriculture, especially the Brazilian livestock production sector, has been the target of concern. This is because cattle represent 83.9% of all livestock production in Brazil; moreover, the country has the second largest cattle herd in the world. Appropriate agricultural practices can reduce and/or mitigate GHG emissions and improve the sustainability of the cattle industry. The manipulation of ruminal fermentation and the increment in C sequestration in the production systems are considered the important strategies to mitigate GHG in Brazil. In this regard, this project will be implemented through the collaborative work of 5 institutions: 1) The Brazilian Agricultural Research Corporation - Embrapa (3 research centers: Southeast Livestock, Environment and Instrumentation); 2) The University of São Paulo - USP (College of Veterinary Medicine and Animal Science, College of Animal Science and Food Engineering, Center of Nuclear Energy in Agriculture, and Luiz de Queiroz College of Agriculture); 3) The São Paulo Agency for Agribusiness Technology - APTA (Institute of Animal Science); 4) The University of California (Davis) and 5) The Brazilian Institute of Geography and Statistics (IBGE). The project itself will consist of an experimental component (physical-chemical-biological factors) and a data processing component (political-economic-social factors). The experimental component aims to evaluate different mitigating strategies within the following contexts: 1) characterization of pasture productive components; 2) rumen metabolism and metagenomics; 3) animal performance and dry matter intake; 4) meat quality; 5) ruminal methane and soil/plant GHG flux; 6) physical parameters, the dynamics of organic matter and carbon stock in the soil; and 7) carbon balance. This experimental component will consist of four trials: 1) the effects of intensification and integration of grazing systems; 2) the use of pigeon pea bean in the recuperation of pastures; 3) grass and legume (Macrotyloma axillare) intercropping for Biological Nitrogen Fixation (BNF) in the soil; and 4) deferred grazing as a strategy for GHG mitigation. Within the data processing component will be carried out 3 studies: 1) study of critical territorial planning factors to create tools to advise the oriented technologies transfer and stakeholders decisions; 2) economic evaluation of livestock production systems with mitigating practices; and 3) study to assess the evolution of agricultural, animal and environmental management practices of the livestock in São Paulo state compared to the other states of Brazil throughout the last three decades. It is expected to identify - from among the most productive systems currently available - those that have the greatest potential for GHG mitigation in order to promote the greatest soil carbon stocks. (AU)