Oregon State University Plant Clinic
Plant Disease Diagnosis
Information on diseases
Eriophyid mites on stored garlic
Aceria tulipae Keifer ( = Eriophyes tulipae)
This mite is known as the dry bulb mite. This is not the same as the wheat curl mite, which infects cereals and other grasses. Eriophyid mites are tiny banana-shaped mites that are too small to see without magnification.
Aceria tulipae is common and infects wild and cultivated members of the genus Allium , including onion, garlic, and leeks. It also infects tulips.
In storage, feeding injury is seen as sunken brown spots on garlic cloves. Feeding damage on garlic leads to drying of cloves and rotting by disease organisms.
Aceria tulipae is found between the layers of the bulbs in storage. The eggs, nymphs, and adults overwinter on infected garlic while in storage, and can also survive in the soil. Infested cloves are the most frequent source of infection in the field. Maximum egg hatch while in storage occurs at close to 100 % relative humidity, and the time to complete a life cycle, from egg to adult to egg was 8-10 days at 75 - 80 º F.
CAB International Crop Protection Compendium, 2006. CABI, Wallingford, UK (http://www.cabi-publishing.org/)
Courtin, O., Fauvel, G., & Leclant, F. 2000. Temperature and relative humidity effects on egg and nymphal development of Aceria tulipae (K.) (Acari: Eriophyidae) on garlic leaves ( Allium sativum L.). Annals of Applied Biology 137:207.
Keifer, H.H., E.W. Baker, T. Kano, M. Delfinado & W.E. Styer, 1982. An illustrated guide to plant abnormalities caused by Eriophyid mites in North America . Agriculture Handbook Number 573. United State Department of Agriculture
Perring, T.M. 1996. Vegetables. In: Lindquist, E.E., Sabelis, M.W., and Bruin, J. eds. Eriophyid Mites Their Biology, Natural Enemies and Control. World Crop Pests 6:593-610.
UC IPM Online Statewide Integrated Pest Management Program. Onion and garlic wheat curl mite. http://www.ipm.ucdavis.edu/PMG/r584400211.html
May 27, 2009