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.

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.

 

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.