Downy mildew on peas: symptoms, causes, control

Downy mildew of peas is a fungal disease that affects peas, causing yellow spots on the leaves and general deterioration of the plant. In this article on your website, World of Plants, we will review prevention and control strategies

Symptoms of downy mildew on peas

Name of the disease: Downy mildew
Scientific name: Peronospora pisi Snyder
Type: fungal
Disease family: Peronosporaceae

The infection appears in the form of large irregular areas, pale green and yellowish in color on the upper surface of the leaves, and is offset on the lower surface of the leaf by gray fungal fuzz, cottony in appearance, which are fungus spores. The affected part turns dark brown, leading to its death, and in some cases. The infection affects all the leaves and upper branches and they die.

Preventive measures to prevent downy mildew on peas

• Burning infected plant waste away from the field.
• Follow an agricultural cycle.
• Do not plant seeds from infected plants.
• For interest in agricultural operations and moderation in irrigation and fertilization.
• Preventive spraying with one of the recommended pesticides was done once every 15 days after planting, about 30-45 days, especially in late plantings or in areas where there is a lot of rainfall.

Chemical control recommendations

Products used in one or more parts of the world contain the following ingredients:

Dimethomorophylpropamide, iprovalicarb, and benthiavalicarb-isopropyl alcohol

Metalaxyl – M

Phenamidon, propamocarb hydrochloride + flucolide

Potassium salts in phosphonic acid

Other: Cymoxanil

Anti-membership recommendations

Products containing tea tree oil sulfate and sodium hydrogen carbonate + copper.

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