Diseases of apples and pears

August 12, 2017 17:52 | Fruit Plants

Black cancer dangerous for the apple and, to a lesser extent for pears.The most malicious form of the disease - damage to the bark on trunks and skeletal branches.Usually, the infection begins in the wound, around which appears slightly depressed brownish-purple spots, grows in concentric zones.Later sections of cracked and blackened, covered with small tubercles.Bark in places lesion resembles goosebumps.

Affected leaves covered with reddish-brown spots, the flowers turn brown, shrivel, turn black stamens and pistils.On ripening fruit formed dark brown sunken spots.Winters fungus in the affected areas of the cortex, in the fallen leaves in mummified fruits. Control measures. autumn burn diseased fallen leaves, remove from the dried fruit of the tree.The wounds from the knife to clean wood, capturing and healthy cortex (1.5-2 cm), disinfect the 1% copper sulfate and gloss over the garden pitch.As therapeutic putty can be used clay previously soaked for a day in water, and adding thereto mullein (in

equal parts).

Tsitosporoz causes drying of certain areas of the cortex, which does not turn black, but remains reddish-brown, and when trying to distinguish it Mochalov.On the whole area of ​​the affected cortex appear noticeable bumps - pycnidia of the pathogen. Control measures. See. Black cancer.

scab appears on the leaves brown spots with a velvety touch, which gradually grow.

on fruits other than gray-black spots, cracks.With the defeat of pear shoots observed cracking and peeling bark.Fungal spores are dispersed by the wind after the heavy rain.Wet weather favors disease development. Control measures. Before bud trees to be processed copper Kupo-wolverine (100 g per 10 liters of water).If this period is missed, the treatment can be carried out at the pinkness buds drug soon (2 ml per 10 liters of water).Following spraying, if necessary, is carried out after flowering, and then 10-15 days interval i after it with the same medications.Autumn leaves after leaf burn.The incidence of scab is reduced during landing near the apple raspberry, especially if their branches are touching.

Fillostiktoz mainly affects the leaves of apple trees in the form of a brown spot on them.Most often seen in mid-June. Control measures. See. scab.

Powdery mildew affects apple, pear rare.On leaves, shoots, and sometimes flowers and fruit appear white powdery coating, consisting of mycelium and spores.Stems covered with felt-like bloom, leaves curl and dry up, flowers are deformed, ovary fall.Winters mycelium in infected shoots Control measures. Fallen leaves must be destroyed, diseased shoots are cut and burn.The phase separation of the apple bud recommended to spray the trees with a solution of colloidal sulfur (40 by 5 liters of water) or topaz (2 ml per 10 liters of water).In the case of warm wet weather treatment should be repeated immediately after flowering apple trees.

Fruit rot affects apple, pear and stone fruit.On fruits appear brown spots, then grayish pads of mycelium and spores, arranged in concentric circles.The flesh becomes softened, brown, tasteless.The storage fungus causes black rot: fruit surface becomes shiny black and the flesh becomes brown or black-brown. Control measures. summer should regularly collect and remove from the garden and dig into the soil diseased fruit.

Milky shine seen after severe winters affected by frost on the trees with damage to the bark and wood.The leaves become whitish with a silvery sheen, like mother of pearl color.Later Hirx areas appear to dying tissue.The leaves become brittle, dry up gradually.Affected branches and trunks of wood gets dark color. Control measures. certain effect is given root and foliar feeding of urea in combination with spraying patient lereva onion extract.The affected branches should be burnt.If therapeutic measures do not help, have a sick tree uprooted.