Chocolate Spot
Severe attack of chocolate spot, close up of leaf symptoms & severe disease pressure
Severe attack of chocolate spot, close up of leaf symptoms & severe disease pressure
Fungus
Field and broad beans
Red / chocolate brown leaf and pod spots, streaky stem lesions and stained seed. These symptoms coalesce during the aggressive phase of the disease and cause flower or pod rotting, defoliation and early senescence.
Plants can be infected by old bean crop debris, volunteer beans, seed, soil-borne sclerotia or air-borne spores.
Favourable Factors
Wet, humid weather, thick winter crops, poor drainage and frost damage.
The most widespread and serious disease of field beans, particularly in winter crops. Can lead to yield reductions of up to 25 % and under severe disease pressure can cause complete defoliation of the crop and possibly even complete crop failure.
Find out more information on the key disease threats to your pea and bean crop. For each disease you will find out the importance of the disease in terms of potential yield penalty, how to identify the disease in its early stages and our advice on the best control strategies.