Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
University of California
Division of Agriculture and Natural Resources

John A Roncoroni

Photo of John A Roncoroni
Weed Science Farm Advisor
UC Cooperative Extension
1710 Soscol Avenue
Suite 4
Napa, CA 94559-1315
(707) 253-4221
jaroncoroni@ucanr.edu Create VCard

Also in:
Integrated Pest Management (IPM) Statewide Program

Education

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

Specialty

Weed Control and Vegetation Management in Perennial Crops, Covercrops and Aquatic Weed Control

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

Bibliography

Peer Reviewed

  • DiTomaso, Joseph M.; Kyser, Guy B.; 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
  • Roncoroni, J (2016). UCIPM Grape Pest Management Guidelines, Weeds section.U. UCANR.
  • Roncoroni, J.A.; Hanson, B.D.; 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.; Swain, S.V. (2013). "Poison Hemlock Integrated Pest management for Land Managers." UCIPM Pest Note Publication 74162
  • Kyser, G.B.; DiTomaso, J.M.; 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.
  • Hanson, B.D.; Roncoroni, J.A.; Elkins, R.B. (2012). Weeds section. UC IPM Pest Management Guidelines: Pears. UC ANR. Publication 3340
  • Battany, M.; Urbez-Torres, J.R.; 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
  • Wright, S.D.; Roncoroni, J.A. (2010). Weeds section. UC IPM Pest Management Guidelines: Nectarine. UC ANR. Publication 3451
  • Roncoroni, J.A. (2009). Weeds section. UC IPM Pest Management Guidelines: Cherry. UC ANR. Publication 3340
  • Elmore, C.L.; Steinmaus, S.; 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

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

California Agriculture Article Contributions

ANR Workgroup Associations

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