Crop Profile for Onions in California - Regional IPM Centers

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California Pesticide Impact Assessment Program (530) 754-8378 References 1. California Drug and Food Association, California production statistics 1996. Webpages: www.cdfa.ca.gov/kids/commodities/onions.html#1 2. Cornell University, Cornell International Institute for Food, Agriculture and Development, Global crop pests, Thrips tabaci, 1995. Webpages: www.aruba.nysaes.cornall.edu/ent/ hortcrops/english/thrips.html 3. Crop protection reference, 15 th ed., C&P Press, New York, 1999. 4. Department of Pesticide Regulation, Current section 18 emergency exemptions, 1999. Webpages: www.cdpr.ca.gov/cgi-bin/sec18/list.pl?stat=4 5. Disease and insect control guide, Meister Publishing Company, Willoughby, OH, 1998. 6. Ehn, Robert. American Dehydrated Onion and Garlic Association (ADOGA), Dry bulb onion production information, 1997. 7. Institut National de la Recherche Agroonomique, Eriophyes tulipae Keifer, 1998. Webpages: www.inra.fr/HYPPZ/RAVAGEUR/6eritul.htm 8. National Agricultural Statistics Service, CASS, Commodity statistics, Onions, 1998. Webpages: www.nass.usda.gov/ca/bul/709veg.htm#Onions,All 9. North Carolina State University, Insect and related pests of vegetables. Webpages: ipmwww.ncsu.edu/AG295/html/beet_armyworm.htm 10. Oregon State University, Onions for dehydration, 1998. Webpages: www.agroindia.org/ horttech/prod/oniondhy.html 11. California Department of Pesticide Regulation. Annual Pesticide Use Report 1997.
12. University of California, Pest management guidelines, Pests of onions and garlic, 1999. Webpages: www.ipm.ucdavis.edu/PMG/selectnewpest.onion-and-garlic.html 13. University of California, Vegetable Research and Information Center, Dehydrator onion production in California, 1999. Webpages: vric.ucdavis.edu/richome/html/veginfo/ commodity/onion/oniondehy.pdf 14. University of California, Vegetable Research and Information Center, Fresh market onion production in California, 1999. Webpages: vric.ucdavis.edu/richome/html/veginfo/ commodity/onion/onionfmkt.pdf 15. University of Florida Cooperative Extension, Institute of Food and Agricultural Sciences, Armyworms, 1997. Webpages: www.edis.ifas.ufl.edu/scripts/htmlgen.exe? DOCUMENT_in016 16. University of Maine Cooperative Extension, Pest management, Onion maggot Factsheet, 1994. Webpages: www.pmo.umext.maine.edu/factsh/onionm94.html 17. University of Vermont Extension, Onion pests, Entomology leaflet 76, 1997. Webpages: www.ctr.uvm.edu/ctr/el/el76.html 18. Weed control manual, Meister Publishing Company, Willoughby, OH, 1998. Appendices Appendix 1. Major onion producing areas of California. 1. San Joaquin Valley 2. Low Desert 3. High Desert 4. Central Coast 5. Northern Mountain Valleys S. A. Fennimore, N. L. Flewelling and S. J Richard Extension Specialist, Post Graduate Researchers UC Davis, Department of Vegetable Crops
Page 1 and 2: Prepared: October, 1999 Crop Profil
Page 3 and 4: tape. Seeds are planted half an inc
Page 5 and 6: damage. Under dry, hot conditions a
Page 7 and 8: ● Pyrethrins were applied in 43 o
Page 9 and 10: ● Zeta-cypermethrin is an onion m
Page 11 and 12: in 1997. Rates typically used are 0
Page 13 and 14: Diseases Diseases can pose a seriou
Page 15 and 16: Purple blotch and Stemphylium leaf
Page 17 and 18: A fungus causes botrytis leafspot.
Page 19 and 20: ● Chloropicrin was applied in sev
Page 21 and 22: CULTURAL CONTROL- Avoid planting in
Page 23 and 24: weeds can occur during one crop cyc
Page 25 and 26: depleted will no longer be availabl
Page 27: Mike Davis Plant Pathologist Dept.
Page 31 and 32: lettuce, prickly C C N C P N C N N
Page 33: CLE = clethodim PAR = paraquat FLU

Crop Profile for Onions in California - Regional IPM Centers

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