Weed Management in Orchards and Vineyards 
In production agriculture, weeds or “misplaced plants” have a tendency to tolerate suboptimal conditions much better than most crops. However, they grow more and produce more seed under optimal conditions than they do under suboptimal. For example a nine-foot tall horseweed growing in a vineyard produces 800,000 seeds while a foot tall horseweed growing on a dry, hard road shoulder produces only about 1,000 seeds. Weeds are unwanted plants that compete with crops for nutrients, light and water, and can be detrimental to crop yields. Integrated weed management (IWM) programs and orchard cultural practices have been developed for specific orchard and vineyard crops. This accredited CEU provides information on economically and environmentally sound IWM practices. This course will provide an overview of important weed control and management practices as well as some insight into managing for herbicide-resistant weeds.
- Lectures 8
- Questions 41
- Duration 1 h (approx)
This course is accredited by:
- California Department of Pesticide Regulation (1 hour Other)
- Certified Crop Adviser (CCA) Accredited in U.S. and Canada (1.5 hours IPM)
- Arizona Department of Agriculture (1 hour)
- Delaware Department of Agriculture (1 credit PA, 1A)
- Florida Department of Agriculture (1 CEU, General Standards/Core, Category 482 & 487)
- Georgia Department of Agriculture (1 hour private, 10)
- Hawaii Department of Agriculture (1 CEU, Private 1, Commercial 1a, 10)
- Idaho Department of Agriculture (1 credit)
- Maryland Department of Agriculture (2 credits, Pvt, 1A)
- Michigan Department of Agriculture and Rural Development (1 credit 1C, Comm CORE, Priv CORE)
- Montana Department of Agriculture Commercial (1 credit categories 10, 30, 39, 60. *Maximum of 6 credits for online training per recertification cycle for commercial, government, dealers, non-commercial, and private applicators)
- Nevada Department of Agriculture (1 CEU General)
- New Jersey Department of Environmental Protection (2 units 1A, PP2)
- New Mexico Department of Agriculture (1 Hour General, PRAP, PRRO)
- Oklahoma Department of Agriculture, Food, and Forestry (1 Hour, Category 1A & 10)
- Oregon Department of Agriculture (1 Credit, Other)
- Pennsylvania Department of Agriculture (2 hours each: PC, 02, 18)
- South Carolina Department of Agriculture (1 credit Core)
- Tennessee Department of Agriculture (1 CEU in 1, 4, 10, 12)
- Texas Department of Agriculture (1 CEU, Gen Pest Features)
- Utah Department of Agriculture and Food (1 CEU in Use)
- Virginia Department of Agriculture (1 credit in category 90)
- Washington Department of Agriculture (1 credit)
- West Virginia Department of Agriculture (2 credits, categories 1, 11, 12, private applicator)
It is accredited for licensing categories: PCAs, Qualified Applicators, Private Applicators, Aerial Applicators, and County Permit Holders.
Our thanks go to the following individuals for information and assistance in developing and/or providing expert review of this course: Brad Hanson, University of California, Davis, weed specialist based in Davis. Curtis Rainbolt, BASF Tech Service Representative and Bill Nairn, a BASF business representative for BASF agricultural products and nutrition in California.
The following materials were also consulted: IPM in Practice (UCANR publication 3418); The Safe and Effective Use of Pesticides, Second Edition (publication 3324); numerous on-line sources, including information from the Herbicide Resistance Action Committee (www.plantprotection.org/), the Weed Science Society of America (www.wssa.net), the International Survey of Herbicide Resistant Weeds (www.weedscience.org) and the University of California Statewide Integrated Pest Management Program (www.ipm.ucdavis.edu).
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