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United States Department of Agriculture

Agricultural Research Service

Title: Testing Biological Control and Induced Systemic Resistance for the Control of Aphanomyces Root Rot of Sugarbeet.

item Metzger, Michael - NORTH DAKOTA SU
item Weiland, John

Submitted to: American Phytopathological Society
Publication Type: Abstract Only
Publication Acceptance Date: September 2, 2002
Publication Date: N/A

Technical Abstract: Seedling damping off and chronic root rot of sugarbeet caused by <i>Aphanomyces cochlioides</i> 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 <i>Burkholderia cepacia</i> AMMDR1. At one location, treatment with formulated harpin protein (Messenger<sup>TM</sup>) also resulted in increased sugarbeet yield. Future testing 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.

Last Modified: 4/22/2015
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