| Rust

First outbreaks of soybean rust in commercial crops are identified in Paraná

State technical assistance identified the presence of the disease in plants that were in reproductive development (stage R4), sown from the first to second half of September

29.11.2022 | 10:50 (UTC -3)

Embrapa

Identification map with soybean rust outbreaks; Photo: Disclosure

The Institute for Rural Development of Paraná (IDR-Paraná), a member of the Antirust Consortium, recorded the first occurrences of Asian soybean rust, in commercial areas in the 2022/23 harvest, in the municipalities of Londrina and Terra Roxa, north and west respectively of State.

According to Edivan Possamai, coordinator of the IDR-Paraná Grains Program, state technical assistance identified the presence of the disease on November 25th, last Friday, in plants that were in reproductive development (stage R4), sown from the first for the second half of September.

“The two areas were sown at the same time in rainfed areas, which do not have irrigation, and few crops are at this stage of development in the State of Paraná”, explains Possamai.

IDR-Paraná has a soybean Rust Alert network and in the 2022/2023 harvest, more than 200 collectors were installed throughout Paraná. According to Possamai, the Alerta Ferrugem network had already captured Asian rust spores after October 28, 2022, in these two regions, as an indication of the disease in the environment, and now confirmed by the infected plants.

Click here to see the affected municipalities on the map.