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March 22, 2021

Brazil Ends 2020/21 Season with 347 Cases of Soybean Rust

Author: Michael Cordonnier/Soybean & Corn Advisor, Inc.

Brazil is ending the 2020/21 growing season with a total of 347 confirmed cases of soybean rust. There still might be a few more confirmed cases since the soybean harvest is very late this year.

The number of cases started off very low, but increased rainfall starting in mid-January and continuing through mid-March, resulted in a rapid increase in the number of confirmed cases. The two southern states of Rio Grande do Sul and Parana accounted for 68% of the total number of cases in Brazil. In the state of Mato Grosso, which is the largest soybean producing state in Brazil, they recorded only 4 cases of soybean rust.

Last year at this time, there had been 191 confirmed cases. The 5-year average of cases is 393 and the 15-year average is 1056. The worst year was 2008/09 when there had been 3514 confirmed cases by this time and the best year was 2019/20 with 191 cases.

The number of cases by state are: 135 in Rio Grande do Sul, 100 in Parana, 27 in Bahia, 25 in Mato Grosso do Sul, 17 in Santa Catarina, 10 in Tocantins, 9 in Goias, 8 in Sao Paulo, 7 in Piaui, 4 in Mato Grosso, 4 in Minas Gerais, and 1 in Maranhao.

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