John Roncoroni

Weed Science Farm Advisor, Emeritus

UC Cooperative Extension
1710 Soscol Avenue
Suite 4
Napa, CA 94559-1315
707-253-4221
jaroncoroni@ucanr.edu

http://cenapa.ucanr.edu

Also in:
Integrated Pest Management (IPM) Statewide Program

Education

M.S. Horticulture, University of California, Davis. 1999

Specialty

Areas of Expertise (click to see all ANR academics with this expertise)

• Tree Fruits - General
• Wine Grapes
• Nut Crops
• Aquatic Plants
• Plants and Their Systems
• Weeds Affecting Plants
• Integrated Pest Management Systems
• Agriculture
• Commercial
• Organic
• Small Farms
• Ipm
• Invasives
• Weeds
• Endemic and Invasive Pests and Diseases
• Sustainable Food Systems

Bibliography

Peer Reviewed

• DiTomaso, Joseph M.; Kyser, Guy B., et al.; Lewis, David J.; Roncoroni, and John A. (2017). "Conventional and Organic Options for the Control of Woolly Distaff Thistle (Carthamus lanatus)." Invasive Plant Science and Management Volume 10, Issue 1: pp. 72-79.
• Roncoroni, John A. (2017). Dandelion (Revision). UCIPM Pest Note. ANR Publication 7469. September 2107.
• Roncoroni, J (2016). UCIPM Grape Pest Management Guidelines, Weeds section.U. UCANR. January 2015.
• Roncoroni, J.A.; Hanson, B.D., et al.; Hembree, K.; Elmore, C.L. (2014). Tree, Vine, and Soft-Fruit Crops. Principles of Weed Control.S. Fennimore and C. Bell. California Weed Science Society.
• Ingels, Chuck; Roncoroni, John (2014). "Weed Control in Dune Sedge Transplants." HortTechnology 24(2): 166-170.
• Roncoroni, J.A.; DiTomaso, J.M., et al.; Swain, S.V. (2013). "Poison Hemlock Integrated Pest management for Land Managers." UCIPM Pest Note Publication 74162
• Kyser, G.B.; DiTomaso, J.M., et al.; Oneto, S.R.; Orloff, S.B.; Wright, S.D.; Miller, T.L.; Ransom, C.; Duncan, C.; Mann, J.J. (2013). Weed Control in Natural Areas in the Western United States. University of California Weed Research and Information Center. 2013.
• Hanson, B.D.; Roncoroni, J.A., et al.; Elkins, R.B. (2012). Weeds section. UC IPM Pest Management Guidelines: Pears. UC ANR. Publication 3340. 2012.
• Battany, M.; Urbez-Torres, J.R., et al.; Bettiga, L.J.; McGourty, G.; Smith, R.J.; Roncoroni, J; Gulber, W.D. (2010). "Botryosphaeriaceae species spore-trapping studies in California vineyards." Plant Dis 94: 717-724.
• Wright, S.D.; Roncoroni, J.A. (2010). Weeds section. UC IPM Pest Management Guidelines: Peach. UC ANR. Publication 3454. 2010.
• Wright, S.D.; Roncoroni, J.A. (2010). Weeds section. UC IPM Pest Management Guidelines: Nectarine. UC ANR. Publication 3451. 2010.
• Roncoroni, J.A. (2009). Weeds section. UC IPM Pest Management Guidelines: Cherry. UC ANR. Publication 3340. 2009.
• Elmore, C.L.; Steinmaus, S., et al.; Smith, R.J.; Weber, E.A.; Miller, P.R.M. (2008). "Mulched covercrops as an alternative to conventional weed Management systems in vineyards." Weed Research 48: 273-281.

Non-Peer Reviewed

• Brunharo, Caio A.; Roncoroni, John, et al.; Bradley D. Hanson. (University of California, Davis (2017). Performance of glufosinate-ammonium formulations in California perennial crops. 2017 WSWS Research Progress Report.
• Roncoroni, John A. (2017). Selecting Spray Nozzles for Orchard and Vineyard Herbicide Sprayers. West Coast Nut.
• Hanson, B.D. (2017). Weed Control in Orchards and Vineyards. Encyclopedia of Applied Plant Sciences.B. In Brian Thomas. Waltham, MA: Academic Press, 2017. 3: 479–484.
• Roncoroni, John A. (2016). Fall Weed Management Considerations for Growers. American Vineyard. Malcolm Media. 25:10, 12-13. October.
• Symmes, Emily J; Roncoroni, John (2014) Fall Weed Management Considerations in Prune Orchards. Sacramento Valley Prune News
• Roncoroni, J.A.; Abit, J.M., et al.; DeBuse, C. (2012). Walnut and Almond Residual Herbicide comparison. WSSA Research Progress report. Western Society of Weed Science. 24-26. 2012.
• Roncoroni, J.A. (2011). Weed Control Update. Grower Advocate. Napa County Farm Bureau. Fall 2011. 2011.
• Roncoroni, J.A. (2010). Control of Tall Annual Willowherb [Epilobium brachycarpum C.Presl] in Vineyards of Californiaâ??s Napa and Russian River Valleys. 2010 Pan-American Weed Resistance Conference. Miami, FL. 2010.
• Roncoroni, J.A. (2010). Control of Tall Annual Willowherb [Epilobium brachycarpum C.Presl] in Vineyards of California’s Napa and Russian River Valleys. 2010 Pan-American Weed Resistance Conference. Miami, FL. 2010.
• Capps, S.; Lanini, W.T., et al.; Roncoroni, J.A. (2010). Field Testing of Organic Herbicides. 2010 Western Society of Weed Scientists Annual Meeting. Waikoloa, Hawaii. 2010.
• Roncoroni, J.A. (2010). Herbicide Resistant Weeds in California Vineyards. Are they inevitable? 58th Annual Lodi Grape Day Report. 2010.
• Lanini, W.T.; Roncoroni, J.A. (2010). Organic Herbicides. CAPCA Advisor magazine. California Association of Pest Control Advisors. December 2010. 2010.
• Roncoroni, J.A. (2010). Whatâ??s That Weed? Azolla. Grower Advocate. Napa County Farm Bureau. Spring 2010. 2010.
• Roncoroni, J.A. (2010). Whatâ??s That Weed? RoundUp Resistant Weeds. Grower Advocate. Napa County Farm Bureau. Fall 2010. 2010.
• Roncoroni, J.A. (2010). What’s That Weed? Azolla. Grower Advocate. Napa County Farm Bureau. Spring 2010. 2010.
• Roncoroni, J.A. (2010). What’s That Weed? RoundUp Resistant Weeds. Grower Advocate. Napa County Farm Bureau. Fall 2010. 2010.
• Roncoroni, J.A. (2009). Whatâ??s That Weed? Starthistle. Grower Advocate. Napa County Farm Bureau. Fall 2009. 2009.
• Roncoroni, J.A. (2009). What’s That Weed? Biology and Control of Water Primrose-Ludwigia. Grower Advocate. Napa County Farm Bureau. Fall 2009. 2009.
• Roncoroni, J.A. (2009). What’s That Weed? Starthistle. Grower Advocate. Napa County Farm Bureau. Fall 2009. 2009.
• Roncoroni, J.A. (2009). What's That Weed? Biology and Control of Water Primrose-Ludwigia. Grower Advocate. Napa County Farm Bureau. Fall 2009. 2009.
• Roncoroni, J.A. (2009). What's That Weed? Mustard. Grower Advocate. Napa County Farm Bureau. Spring 2009. 2009.
• Roncoroni, J.A. (2008). The View from Below the Vine. Vineyard Views. April 2008. 2008.
• Roncoroni, J.A. (2008). What’s That Weed? Field Bindweed Biology and Control. Grower Advocate. Napa County Farm Bureau. Summer 2008. 2008.
• Roncoroni, J.A. (2008). What's That Weed? Sharppoint Fluvellin Biology and Control. Grower Advocate. Napa County Farm Bureau. Fall 2007. 2008.
• Roncoroni, J.A. (2008). What's That Weed? Willowherb Biology and Control. Grower Advocate. Napa County Farm Bureau. Spring 2008. 2008.
• Roncoroni, J.A. (2007). Herbicide Resistance Weeds in Napa? Vineyard Views. May 2007. 2007.

California Agriculture Article Contributions

• MAINTAINING LONG-TERM MANAGEMENT: Herbicide-resistant weeds challenge some signature cropping systems
• Perennial weeds respond to control by soil solarization

ANR Workgroup Associations

• Agroecology and Organic Farming Systems - Member
• Integrated Grape Production - Member
• Pest Management in ANR - Member
• Spray Application Technology - Member
• Vegetable Crops - Member
• Weed - Member
• Wildlife - Member

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