The caruru-palmeri pest, also known as giant pigweed, has been found for the first time in São Paulo, specifically in the São José do Rio Preto region. This invasive species, scientifically identified as Amaranthus palmeri, represents a significant agricultural threat due to its rapid growth and competitiveness with crops. The finding was confirmed by the Brazilian Ministry of Agriculture and Livestock, which is taking preventative measures against its spread.

In response to the detection, the Ministry has imposed strict restrictions on the affected agricultural property, prohibiting the movement of all vegetable materials related to the species, including cleanup residues and soil fragments. This is an effort to prevent the pest from disseminating further within the state. Previously, caruru-palmeri had been reported in other Brazilian regions, such as Mato Grosso do Sul and Mato Grosso, highlighting its potential to affect a broader area.

The authorities have stated that the soybean harvest in the affected field will only be allowed after the complete eradication of the pest. The discovery of caruru-palmeri raises alarms for local farmers, as it could complicate agricultural practices and affect crop yields if not managed appropriately. The situation underscores the importance of monitoring invasive species and maintaining strict biosecurity protocols to protect local agriculture in Brazil.