Sexology

Description

The blister is a rather widespread disease. It owes its name with the blisters which show the infected sheets. It attacks with the sheets, the starts-up and sometimes the fruits which it deteriorates on the surface. The sheets reached change color and become generally red or pale green. Especially, they take an aspect twisted and rolled up then thicken and rise when the infection progresses.

The natural evolution of the disease is a tanning of the sheets, which fade and fall from the tree at the end of June or at the beginning of July. Moreover final branches decay, which makes problematic the development of the fruits, the year of the infection, and the tiny room the following year. The tree becomes more fragile, and this repeated loss of the sheets in spring can lead to dead tree after a few years.

Cause attack

The Spore S of the mushroom Taphrina deformans , produced on the infected sheets, are able to remain a whole season under the scales of the buds, and to infiltrate there next spring at the time of their opening. The primary infection thus occurs when the foliar buds, outgoing of their Dormance, start to inflate then to open.

A cold and wet time during the development of the sheets proves to be favorable to the proliferation.

Preventive action

Regular maintenance consists in removing the momifiés fruits, collecting on the ground the sick sheets and making each year a good contribution of Compost to the foot of the tree.

To avoid the cuts and other sizes because each open wound is likely, in a general way, to weaken the tree with respect to the parasites and diseases.

A biological action of prevention would consist to plant garlic or to sow Capucine S with the foot of the Pêcher S, or to bury falls of Zinc around the tree in the ray of its foliage

Treatment

The treatment must be made at the end of the autumn, once all the sheets fell, and at the beginning of spring, before the opening of the buds. The tree must be treated with the Nantes Bouillie, the Cuivre by a careful pulverization of Bouillie of Bordeaux or with a mixture of both added with zinc.

Only preventive medications are effective. The treatments carried out at the end of spring, after the opening of the buds, or during the summer, are ineffective. A rain during pulverization or immediately afterwards, can limit some of much the effectiveness.

Random links:

Cave of Lombrives | Tool bag-in-Brie | Kriukis | Federation of Greenland of handball | Japanese whiskey