TY - JOUR AU - Kempen, H. AU - Agamalian, H. AU - Lange, A. AU - Brendler, R. TI - Weed control in carrots, celery, and parsley JF - California Agriculture JO - Calif Agr Y1 - 1968/04/01 VL - 22 IS - 4 SP - 2 EP - 3 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v022n04p2 AB - The Umbelliferous Crops that are grown in California include carrots, celery, and parsley. Carrots are grown on about 23,000 acres. Weed control costs for carrots are about $30 per acre and losses are estimated at $7.50 per acre for a total loss of $860,000 per year to California growers. Most, of the estimated cost of weed control in carrots comes from the use of selective aromatic oil and hand hoeing.