Strategies for the production and release of predatory mites for the management of insects and mites, and associated diseases in agroecosystems of citrus and vegetables.

• Grant number: 25/02371-3
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: April 01, 2025
• End date: March 31, 2028
• Field of knowledge: Agronomical Sciences - Agronomy - Plant Health
• Principal Investigator: Mário Eidi Sato
• Grantee: Maria Eduarda Silva Valentim
• Host Institution: Instituto Biológico (IB). Agência Paulista de Tecnologia dos Agronegócios (APTA). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). São Paulo , SP, Brazil
• Associated research grant: 21/11965-3 - Center for the sustainable management of pests, diseases and weeds, AP.CCD

Abstract

This project aims to develop sustainable strategies for pest management in citrus and vegetable crops in São Paulo state, using predatory mites. Although Brazil is a global leader in orange juice production, its citrus industry faces increasing challenges from pests such as the psyllid Diaphorina citri and the citrus leprosis mite Brevipalpus yothersi. Similarly, vegetable crops are affected by thrips, whiteflies, and spider mites. While chemical pesticides are effective in the short term, they have significant environmental impacts, increase production costs, and promote pest resistance.The project proposes: (1) prospecting new species of predatory mites with potential for biological control, (2) improving mass-rearing techniques for these predators, (3) evaluating their efficiency in field conditions, and (4) analyzing socio-economic and environmental impacts. The research adopts a multidisciplinary approach, encompassing taxonomy, ecology, agronomy, biotechnology, and agricultural economics.Key predators under study include members of the Phytoseiidae family (e.g. Amblydromalus limonicus) which are effective against thrips, whiteflies, and psyllids. Experiments will involve controlled releases in lettuce, potato, and citrus crops, with monitoring of pest population dynamics and predator efficacy. Expected outcomes include reduced use of chemical pesticides, preservation of biodiversity, lower environmental impacts, and improved productivity and quality of agricultural products. Additionally, the research aims to strengthen the biotechnology market in Brazil, generating jobs and fostering the creation of companies specialized in biological control.