Fundecitrus researcher Marcelo Miranda recently discussed the effectiveness of insecticides in combating greening-spreading Asian citrus psyllids in Brazil. He presented a lecture at the 50th Expocitrus/46th Citrus Week at the Sylvio Moreira Citrus Center in São Paulo.
The information Miranda shared focused on the Citrus Belt of São Paulo and expansion areas. The researcher shared updated results of studies conducted in partnership with the Luiz de Queiroz College of Agriculture of the University of São Paulo. The studies monitor the resistance of psyllids to different insecticides. Miranda also spoke about studies conducted with the Evaluate Psyllid program, a platform that provides results of experiments on the effectiveness of insecticides in field populations in different citrus-growing regions.
“The studies reveal significant variations in the effectiveness of products used in the field, both in the consolidated areas of the São Paulo Citrus Belt and in new regions of citrus expansion, such as northern Minas Gerais and northwestern São Paulo,” Miranda said. “This data is essential for planning management strategies and preventing the spread of resistance.”
The researcher emphasized the importance of insecticide rotation as a fundamental tool in managing psyllid resistance. “It is essential that producers rotate insecticides with different modes of action,” Miranda said. “Rotation is the main way to extend the shelf life of products and maintain high control effectiveness.”
Miranda also reinforced the need for integrated management strategies, based on monitoring and the use of other forms of insect control. “We need integrated, science-based strategies to keep Brazilian citrus farming productive and sustainable,” he concluded.
The event brought together citrus growers, researchers, technicians and representatives of the citrus chain. The aim of the event was to promote knowledge, the exchange of experiences and innovation in Brazilian citrus farming. More than 250 people attended Miranda’s lecture.
Source: Fundecitrus
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