Greening: orange producers in SP and MG intensify actions to control the spread of the disease

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A study by the agronomy faculty of the University of São Paulo in partnership with the Citrus Defense Fund identified the insect’s resistance to the two groups of pesticides most used by citrus growers. Orange producers report high incidence of greening insect in orchards Orange producers are having difficulty controlling greening, the crop’s main disease. The transmitting insect became resistant to pesticides. A study carried out by the agronomy faculty of the University of São Paulo (Esalq/USP), in partnership with the Citrus Defense Fund, proved for the first time the insect’s resistance to the 2 groups of insecticides most used in orchards. Transmitted by an insect called a psyllid, the pest causes infected plants to have their production reduced by affecting the development of the fruits and turning the leaves yellow. The problem occurs at a time when greening has reached the highest incidence in almost 20 years in orchards in São Paulo and Triângulo Mineiro – the largest orange producing regions in the country. Four out of ten trees are infected. In addition to spraying insecticides, citrus growers began to use a white powder called kaolin in the orchards as a complementary measure, which works as an insect repellent due to its color. Experts also recommend other strategies to control greening, such as suspending the use of insecticides that have lost their effectiveness for 90 days and alternating them with other pesticides. Check out the full report in the VIDEO ABOVE. See Globo Rural’s most watched videos

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