apple scab

The Foxwhelp is prone to the disease apple scab.

Your backyard tree has apple scab, which the wet, cool weather has encouraged this summer.

The tree has a relatively small and spreading habit; it has a high resistance to apple scab.

Apple scab is caused by the fungus Venturia inaequalis.

Overcrowding and lack of light and air could encourage two diseases, either apple scab or fireblight.

It is resistant to Apple scab.

However, crabapples are subject to a number of diseases, especially apple scab which is a major cause of defoliation and poor vigor.

Apple scab is the most serious apple disease, resulting in corky brown lesions on fruits and leaves.

The tree is resistant to apple scab and mildew and does best when grown as a standard in somewhat heavy clay soil.

In the orchard at harvest time it was obvious that apple scab, the bane of organic gardeners, was not a problem.

It is the only fungicide used in organically farmed apple production against the main disease apple scab under colder conditions.

Potassium bicarbonate is an effective fungicide against powdery mildew and apple scab, allowed for use in organic farming.

Except, of course, when the two main enemies of pyracantha, fire blight and apple scab, blacken the berries and leaves.

There are many plant-pathogenic ascomycetes, including apple scab, rice blast, the Ergot, black knot, and the powdery mildews.

Apple scab is spread through fungus growing in old apple leaves on the ground and spreads during warm spring weather to infect the new year's growth.

Example species are Apple scab (Venturia inaequalis) and the horse chestnut disease Guignardia aesculi.

Apples are prey to unsightly cedar-apple rust, borers, woolly apple aphids and apple scab.

"Apple scab will over-winter in dead leaves and twigs, but a really cold winter, of about zero degrees, will suppress it," Mr. Wickham said.

Many of the fungi are destructivethey damage crops, spoil stored food products, and cause plant diseases such as chestnut blight, Dutch elm disease, and apple scab.

A wide range of pests and diseases can affect the plant; three of the more common diseases/pests are mildew, aphids and apple scab.

The vinegar smell was stronger in the York Farm cider house, and behind the press were dried clots of pomace that clung to the wall like apple scab.

In addition to its use to control fungal infection on grape vines, the mixture is also widely used to control potato blight, peach leaf curl and apple scab.

Examples: Venturia inaequalis (apple scab) and Guignardia aesculi (Brown Leaf Mold of Horse Chestnut).

Apple scab: Apple scab causes leaves to develop olive-brown spots with a velvety texture that later turn brown and become cork-like in texture.

The unit can tell when apple scab will hit your orchard (not the neighbor's), when downy mildew endangers your onions, or when coddling moths are starting to emerge.