Carrots
Pesticide Evaluation and Education, Ethoprop (MOCAP) Field Residue Trial in Carrots/Beets
Objectives:
The objective of this research was to collect samples of carrot roots from soil in which ethoprop had been applied. Samples from the treated plot were to be analyzed for ethoprop residues and compared to untreated samples from the same field. The results were to be used to establish a residue tolerance level for carrots. The data collected from this field study was to become part of a petition to be submitted to EPA by IR-4 requesting that a national residue tolerance be established for ethoprop (MOCAP) in carrots.
Nitrogen Management in Vegetable Crops and Their Rotations
PROJECT LEADERS: Delbert D. Hemphill, North Willamette R&E Center, Richard Dick and John Hart, Dept. of Crop & Soil Science
COOPERATORS: John Luna and N.S. Mansour, Dept. of Horticulture, John Selker, Dept. of Bioresources Engineering; Marvin Kauffman, Soil Scientist, Neil Christensen, Crop and Soil Science, and 16 vegetable growers
Evaluation of carrot seed treated with germicidal light to reduce populations of seed-borne Xanthomonas hortorum pv. carotae
Principal Investigator: Cynthia M. Ocamb, Ext. Specialist & Associate Professor
Botany and Plant Pathology, OSU - Corvallis
Telephone: (541) 737-4020
ocambc@science.oregonstate.edu
Co-investigator: Nathan Miller, Postdoctoral Research Assistant, BPP, OSU
Evaluation of carrot seed treated with germicidal light to reduce populations of seed-borne Xanthomonas hortorum pv. carotae
Objectives and Accomplishments for 2011:
1. Conduct a seed evaluation of several fresh carrot seed lots for Xanthomonas contamination levels and test the effects of UV light, hot water, and hydrogen peroxide on seed contamination.
2. Establish a field trial to evaluate the use of UV seed disinfestation on carrot growth and disease levels using fresh seeds.
Field Evaluation of Carrot Seed Treated With Germicidal Light to Reduce Populations of Seed-Borne Xanthomonas hortorum pv.carotae
Objectives for 2010 and Accomplishments:
Conduct a field trial to evaluate the use of UV seed disinfestation on carrot growth and disease levels
Seed-borne pathogen levels were reduced in one carrot seed line when treated with UV light. That same line had the largest reduction in pathogen levels in healthy leaf tissue but the difference was not strongly significant (P = 0.068). Disease levels were reduced in one seed line but overall Xanthomonas populations and disease in the field were inconsistent.
Vegetable Variety Trials 2010. OSU Extension Series EM 877-10. Revised April 2011
Pesticide Evaluation and Education, Magnitude of Residue Field Trials; Imidacloprid/Beet and Carrot; Propaconazole/Beet and Carrot
The objective of each trial was to:
Organic Carrot, Onion, and Beet Seed Maturation and Harvest in the Pacific Northwest and California
Reiten, J. and J. Navazio, 2009. Organic Carrot, Onion, and Beet Seed Maturation and Harvest in the Pacific Northwest and California . eOrganic article. Available at http://www.extension.org/article/18446.
Results of Vegetable Variety Trials 2005. OSU Extension Series #EM 8777-05-E
Revised March 2006
Peter Boches, Deborah Kean, Paul Kusolwa, Jim Myers, Jack Stang