The NPDN conducts testing for diseases caused by Phytophthora as well as other pathogens. In partnership with USDA’s Animal and Plant Health Inspection Service, NIFA funds the National Plant Diagnostic Network (NPDN). University of Georgia researchers developed a technique in which parasitic wasps can detect squash fruits infected with P. The University of California leads a multistate trial investigating five advanced Phytophthora root rot and salinity resistant avocado rootstocks, in combination with different scions, to test their potential to increase avocado production in the United States.Įarly and accurate detection of pathogens ensures producers and growers can make appropriate management decisions. University of Florida scientists determined that thermotherapy, a heat-based technique, improves management of fungicide-resistant Phytophthora.Īt Tennessee State University, researchers are evaluating biological controls that could protect plants against Phytophthora capsici, which affects multiple crops including pepper, tomatoes and sweet potato. In strawberries and other specialty crops, projects have focused on developing tools to help growers manage Phytophthora root rot. “Projects have focused on developing resistant varieties, understanding the host-pathogen interaction, screening for fungicide resistance, improving pathogen detection and determining cultural practices effective in controlling diseases caused by Phytophthora species,” said Emmanuel Byamukama, national program leader in NIFA’s Institute of Food Production and Sustainability, Division of Plant Systems-Protection. As part of that mission over the last 15 years, NIFA has funded $84 million in projects focused on ways to combat Phytophthora’s threat to agriculture and forestry through its Agriculture and Food Research Initiative Competitive Grant, Specialty Crop Research Initiative Grant and other competitive grant programs. USDA’S National Institute of Food and Agriculture (NIFA) invests in and supports initiatives that ensure the long-term viability and sustainability of agriculture. For instance, fungicides used for Phytophthora root rot in strawberries are now ineffective in some areas. Additionally, some have developed resistance to chemical control. ![]() ![]() Phytophthora pathogens can persist in the soil for a long time-making disease management challenging. Similarly, Phytophthora root and stem rot can be a devastating soybean disease. One species that causes late blight disease is responsible for more than $6.7 billion in potato and tomato production losses worldwide annually, according to USDA’s Agricultural Research Service.
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