Pear Scab

Disease

Pear Scab

Venturia pyrina

fungi

In a Nutshell

    Brown spots and cracks on the fruit skinRound dark spots (necrosis) on the leaves

Hosts: %1$s

· Pear

Symptoms

Pear Scab causes round, olive colored, later brown to black, spots. They grow after the flowering stage on the top and underside of the leaves. The spots can grow together and cause larger tissue damage (necrosis). This can cause early leaf drop. On the fruits, brown spots appear and star-like cracks begin to emerge. The fruits undergo a significant reduction in quality.

Trigger

The fungus spreads in the population via spores and hibernates in fallen leaves. Since fungi prefer humid climates, a humid environment increases the risk of infection.

Biological Control

The affected shoots have to be removed.

Chemical Control

You can use fungicides with Difenoconazole or Sulphur to control Pear Scab. Nevertheless, the application of fungicides is difficult in small gardens since the usual spreader cannot provide for a sufficient wetting of big trees and several spraying processes are necessary.

Preventive Measures

    use less vulnerable sortsApply regularly pruning to promote the ventilation and faster drying of the treesPick up and destroy infected pears and leaves




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