prunus taksterfte

Taka € “death blossom, dreaded disease in cherry (Prunus)

In recent years the cherry but cherry (Prunus family) the hard time with a suddenly emerging, serious illness: branch-and bloesemmonilia, actually a case of a fungus that suddenly blossoms and branches of the cherry-like attacks and serious damage to this plant produces.

The disease is most severe in the cherries and sour cherries (Prunus avium) as well as cherry Prunus triloba (almond tree), Prunus sinensis, Prunus serrulata (Japanese sierkers) often prey to this insidious creeping disease. Prunus serrulata ‘Amanogawa “is less susceptible to kersenmonilia.

Syndrome
The sudden drying up of young blossoms, leaves and later drying and death of the branches is striking. The flowers die, turn brown but do not fall off. Deterioration usually begins above the young branches which then die off completely. Later, a gray mold (fungus pads) on the affected plant parts covered.

Cause
The bloesemmonilia (Monilia laxa and Monilia fructigena) is a fungus (mushroom), focusing on cherries and cherry enormous damage to bring about. The infection usually starts to proliferate during the flowering and the flower is done through style or black discoloration. Pollination by bees to further spread the disease. During the pruning of infected plants can unknowingly infect healthy plants.
Optimal conditions for this disease are high temperature (day gently with cold nights) and rainy weather.

white bud stage

Fighting
Although it concerns a fungal disease can still do little if the death blossom is visible. So the message is: better safe than sorry!

Chemical spraying may be preventive in the white bud stage and at the beginning of flowering with systemic fungicides based on copper hydroxide, or bitertanol benomyl.

Success in biological disease control can be affected branches as deeply as possible insnoeien (to the healthy wood) and burn them. Warning: after using the shears (knife and anvil) disinfect them by October 1st of seconds in bleach to keep, so you can spread the disease to other healthy plants.

Just to mention: the short insnoeien almond tree (Prunus triloba) – as you would prune a willow – is not only good for cutting away the disease but also the pruning next year to obtain a beautiful bloom. Indeed, after the short pruned from the dormant eyes (barely visible) this year new, strong year-old shoots that will flower next spring successfully. Whether it is a trunk or a bush the method remains the same.

Short insnoeien

Now we just hope we get back to juicy, red cherries benefit, because these fruits are delicacies, it would be a shame if they remain expensive and scarce.

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