2.3. Productive regions
We individually evaluated the results of soybean productivity change in the main productive regions in South America (Table 1), identified by the following acronyms: Mato Grosso (MT); MATOPIBA, which aggregates results for Maranhão, Tocantins, Piauí and Bahia states; Central Brazil (CB), with results from Mato Grosso do Sul, Goiás, Minas Gerais and São Paulo states; and Southern Brazil (SB), for Paraná, Santa Catarina and Rio Grande do Sul. Even though our focus is Brazil, we also briefly assess the changes in soybean productivity for Argentina (AR) and Paraguay (PY). Together, these regions accounted for about 95% of the soybean produced in South America (Table 1) and 45% of the soybean produced worldwide.