Soybean rust to arrive early in Brazil
Brazil’s major crop disease Asian soybean rust (Phakopsora pachyrhizi) should appear much earlier this season than last year, the Mato Grosso state soybean research institute, Fundacao MT, reports. Its plant protection researcher, Fabiano Siqueri, notes monitoring of “guaxa” soybeans - those that come from lost seed from the previous harvest. "[The number of rust incidences] is much higher compared with the same period last year. So there is a prospect that the fungus will attack a little earlier,” he says. Mato Grosso and Goais states have recently set more limited periods for the planting of soybeans in an attempt to delay the appearance of rust. The average annual cost of fungicide control against rust is estimated at some US$2,000 million.