Greenhouse gas assessment of Brazilian soybean production and postharvest nitrous oxide emissions from crop residues decomposition
| Autor: | Guilherme Silva Raucci |
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| Přispěvatelé: | Carlos Clemente Cerri, Luiz Antonio Martinelli |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Biblioteca Digital de Teses e Dissertações da USP Universidade de São Paulo (USP) instacron:USP |
| DOI: | 10.11606/d.64.2015.tde-30032015-151057 |
| Popis: | Brazil is one of the world\'s largest producers and exporters of soybeans. The oil and meal obtained from grains are important components of biodiesel and animal feed chains. In recent years, international standards and certifications were developed to promote sustainability in the agricultural supply chain. In this context, greenhouse gases (GHG) emissions in the products life cycle has been the main point of interest to the scientific community and consumers. Few studies have evaluated the GHG emissions in soybean cultivation with specific data for the Brazilian reality. The aim of this study was to evaluate the main sources of GHG in soybean production in the State of Mato Grosso, Brazil. We evaluated 55 farms in the crop years of 2007/08, 2008/09 and 2009/10, accounting for 180,000 hectares of soybean cultivation area and totaling 114 individual situations. The results indicated that the largest source of GHG in the soybean production is the decomposition of crop residues (36%), followed by fuel use (19%), fertilizer application (16%), liming (13%), pesticides (7%), seeds (8%) and electricity consumed at the farms ( |
| Databáze: | OpenAIRE |
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