Category: Disease

Bacterial wilt is caused by the pathogen Curtobacterium flaccumfaciens pv. flaccumfaciens. Symptoms Interveinal chlorosis on leaflets leading to necrotic areas surrounded by yellow. Necrotic tissue may tear, giving ragged appearance. Necrotic tissue may fall away causing defoliation, or leaves may drop off in windy conditions. Plants will wilt and may look brown coloured from a…Continue readingBacterial Wilt

Incidence Bean common mosaic virus (BCMV) has been found wherever dry edible beans are grown in the province. In some years, the disease can be severe in individual fields. Appearance Infection of dry edible beans with the virus can cause various symptoms. Leaves of infected plants have a mosaic of light yellow-green and dark green…Continue readingBean Common Mosaic Virus (BCMV)

For the combination fungicide timings, A+C gave the best results under low disease pressure, while B+C had the lowest pod infection and seed pick, and the highest yield under higher disease pressure.Continue readingThe timing of strobilurin fungicides to control anthracnose in 2005-2006

Burial of residue using tillage, along with milder and wetter weather encourages the break down of crop residue, and this kills anthracnose on the residue.Continue readingAnthracnose survival on dry bean plant residue 2016

Common bacterial blight (CBB) is a serious seed-borne disease of bean, affecting leaves, stems, pods and seed. Management includes disease free seed production and genetic resistance. The purpose of this study was to measure the effect of CBB resistant navy cultivars, under moderate/high disease pressure. Two resistant and four susceptible cultivars were tested at six…Continue readingImpact of common bacterial blight resistance in dry bean cultivars 2003-2004

Simulated hail damage reduced yield by 29%. Applying Quadris or Headline did not visibly reduce plant stress and did not result in a yield response to any cultivar or market class.Continue readingStrobilurin Fungicides for Plant Health in Dry Beans, 2009-2011

Anthracnose is a seed borne disease that reduces yield and seed quality. Seed treatments provide the first chemical defence for this disease. DCT (diazinon + captan + thiophanate-methyl) was the standard seed treatment in Ontario. Earlier work found that DCT was better than Apron Maxx (fludioxonil + metalaxyl-m) in managing early season anthracnose infection on…Continue readingImproved seed treatment for anthracnose in dry beans, 2007-2008

The purpose of this study was to find the best fungicide timing, in combination with a seed treatment, to manage anthracnose in a bean crop in Ontario and Manitoba.Continue readingAnthracnose control in bean with seed treatment and fungicide, 2005-2006

The purpose of this study was to measure product performance and return on investment, to help growers to select the best fungicide.Continue readingWhite Mold Fungicides for Dry Beans, 2009-2011