About APS Membership Meetings Education Publications Careers APS Store Home | Log In QUICK LINKS Join APS Renew Membership Buy a Book APS Journals Event Calendar Member Directory Share This Week at APS Plant Disease Now Being Indexed by MEDLINE Learn More About PMN Grant Outreach Services Borlaug's Army Initiative Offers Free, 1-Year Membership to Undergrads Enrolled in an Internship Program Latest News: Emerging Research Detection of Latent Peronospora effusa Infections in Spinach Downy mildew disease of spinach, caused by Peronospora effusa, is managed in conventional fields by a combination of host resistance and scheduled fungicide applications. In this study, conventional polymerase chain reaction (PCR) was applied to detect P. effuse DNA in symptomless spinach leaves in three spatially and temporally separated field. Detection of latent infections may enable management decisions for earlier-than-normal harvest of infected, symptomless organic crops, and for timing fungicide applications on symptomless plants in conventional production. Open access for a limited time. APS Special Report Scout, Snap, and Share: First Impressions of Plant Disease Monitoring Using Social Media Disease Snapshot Bacterial Wilt of Tomato APS Featured Image: Bacterial Wilt of Tomato The American Phytopathological Society (APS) is a 501(c)(3) nonprofit scientific organization dedicated to the study and control of plant diseases. MORE>> © 2018 The American Phytopathological Society. All rights reserved. Contact Us - Report a Bad Link