Submitted to: Fungicide and Nematocide Tests
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 2/13/2005
Publication Date: 4/1/2005
Citation: Strausbaugh, C.A., Koehn, A.C. 2005. Seed treatments for improved stand and yield in dry beans in Twin Falls County, ID, 2004. Fungicide and Nematode Tests. 60:ST001. Available: http:/www.apsnet.org/online. Interpretive Summary: Dry bean stand establishment and yield can be significantly reduced by a number of fungal pathogens in the United States. These fungi can lead to poor emergence, damping off, root lesions and rot, and yield loss. The primary means of disease control is the use seed treatments and cultural practices. In an effort to identify seed treatments with acceptable efficacy, we evaluated six seed treatments and an untreated check exposed to natural field infection. Treatments with azoxystrobin had delayed emergence but recovered by the second stand count. All treatments with mefanoxam and fludioxonil had reduced root disease severity but yields were not significantly different from the untreated check.
Technical Abstract: Dry bean seed treatments were evaluated for efficacy in a furrow irrigated trial in Kimberly, ID. Six seed treatments and an untreated check were evaluated using natural field infection and the dry bean cultivar UI 465. Experimental units were arranged in a randomized complete block design with four replications. Stand counts were taken twice and plants were evaluated for root rot based on a scale of 0 to 4 (no symptoms to severe). The moderately severe epiphytotic resulted in uniform disease pressure. Treatments with azoxystrobin had delayed emergence but recovered by the second stand count. All treatments with mefanoxam and fludioxonil had reduced root disease severity but yields were not significantly different from the untreated check.