Best Management Practices for Weed Control
In onion crops, weeds (any unwanted vegetation) compete with onions for light, nutrients, and water and consequently decrease onion yield (Schonbeck, 2011). There are many effective management practices that can successfully manage weeds. Synthetic herbicides have been shown to effectively control weeds while promoting optimal onion growth, quality, and yield. The growth of weeds can also be reduced by drip irrigation because of timely herbicide applications and less of the soil surface is irrigated. Some growers practice organic farming (excluding the use of synthetic herbicides) to manage weeds by cultivation and hand weeding alone. Both conventional and organic methods can be practical and sustainable solutions, depending on the needs of your farm and marketing opportunities.
- Schonbeck, M. (2011). Principles of Sustainable Weed Management in Organic Cropping Systems (p. 20). Clemson University
- Carlson, H. L., & Kirby, D. (2005). Effect of Herbicide Rate and Application Timing on Weed Control in Dehydrator Onions (No. 115) (p. 4). Tulelake, CA: University of California Intermountain Research and Extension Center
- Carter, A., & Howell, J. (2000, February). An Overview of Drip Irrigation | UMass Amherst Vegetable Program. University of Massachusetts Extension
- Coolong, T. (2013). Using Irrigation to Manage Weeds: A Focus on Drip Irrigation. In S. Soloneski (Ed.), Weed and Pest Control - Conventional and New Challenges. InTech
- Felix, J. (2012, September). Onions | Pacific Northwest Weed Management Handbook. Pacific Northwest Weed Management Handbook
- HS193/WG033: Weed Management in Bulb Crops (Onion, Leek, Garlic, Shallot). (n.d.)