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Podosphaera xanthii (powdery mildew of cucurbits )
Podosphaera xanthii
powdery mildew of cucurbits
Erysiphe fuliginea, Erysiphe fuscata, Erysiphe xanthii, Oidium citrulli, Oidium erysiphoides, Podosphaera phaseoli, Spaerotheca fuscata, Sphaerotheca calendulae, Sphaerotheca castagnei, Sphaerotheca cucurbitae, Sphaerotheca fuliginea, Sphaerotheca humuli var. fuliginea, Sphaerotheca indica, Sphaerotheca macrocarpa, Sphaerotheca phaseoli, Sphaerotheca verbenae, Sphaerotheca xanthii
Worldwide
AZ, CA, CT, FL, GA, IL, IN, KY, LA, MD, MI, NJ, NY, NC, OK, SC, TN, TX, VA
2025-07-23
fungus
-
Main: Cucurbitaceae family: watermelon, melon, cucumber, pumpkin; Other: okra, marigold, chilli, sunflower, impatiens, bottle grourd, bitter gourp, eggplant, mung bean, cowpea, zinnia
PODOXA
Podosphaera xanthii is transmitted mainly by airborne spores carried by wind. It can also spread through contaminated tools, clothing, and surfaces, and may survive between seasons on plant debris or weeds.
1 Known Hosts
Momordica charantia
bitter gourd
No
CABI CPC, PODOXA-1, PODOXA-2
Seed is not a known pathway.
0000-00-00 00:00:00
CABI CPC
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
PODOXA-1
Pirondi, A., Pérez‐García, A., Battistini, G., Muzzi, E., Brunelli, A., & Collina, M. (2015). Seasonal variations in the occurrence of Golovinomyces orontii and Podosphaera xanthii, causal agents of cucurbit powdery mildew in Northern Italy. Annals of Applied Biology, 167(3), 298-313.
PODOXA-2
Granke, L. L., Crawford, L. E., & Hausbeck, M. K. (2012). Factors affecting airborne concentrations of Podosphaera xanthii conidia and severity of gerbera powdery mildew. HortScience, 47(8), 1068-1072.
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