Submitted to: American Society of Sugarbeet Technologists
Publication Type: Abstract Only
Publication Acceptance Date: 2/3/2003
Publication Date: 2/17/2003
Citation: METZGER, M.S., WEILAND, J.J. FIELD BIOCONTROL OF APHANOMYCES COCHLIOIDES. ABSTRACTS OF JOINT MEETING OF INTERNATIONAL INSTITUTE FOR BET RESEARCH AND THE AMERICAN SOCIETY OF SUGARBEET TECHNOLOGISTS. 2003. ABSTRACT P. 53.
Technical Abstract: Seedling damping off and chronic root rot of sugarbeet caused by Aphanomyces cochlioides has caused increasing losses to U.S. producers. Lack of effective control measures for Aphanomyces root rot prompted the initiation of a program aimed at the discovery of new, safe components for disease control. A biological control bacterium and a known inducer of systemic resistance were tested for their ability to control Aphanomyces root rot at two locations in the Red River Valley of the north central U.S. during the 2001 growing season. At both field locations, sugarbeet yield was increased where seed was treated with the bacterium Burkholderia cepacia AMMDR1. At one location, treatment with formulated harpin protein (MessengerTM) also resulted in increased sugarbeet yield. Tests in 2002 included an additional Pseudomonas biocontrol bacterium and treatments involving harpin in combination with standard fungicides for seedling disease control. Future studies will aid in determining new approaches to be implemented alone or in conjunction with current disease control measures to reduce losses caused by this serious pathogen of sugarbeet.