Greenhouse gas emissions and chemical and physical soil attributes of off-season agricultural production systems in the savannah of Maranhão State, Brazil.

Management of agricultural production systems interferes with greenhouse gases (GHG) emissions, thereby altering physical, chemical, and biological attributes of soil; therefore, it is important to understand the relationship between soil attributes and GHG emissions. This study evaluated GHG emissions and their relationship with soil attributes in offseason soybean, maize, brachiaria and eucalyptus production systems. The experiment was carried out in Brejo, Maranhão, Brazil, with soybean (Glycine max), maize (Zea mays), brachiaria (Urochloa ruzizienses), and eucalyptus (Eucalyptus grandis)