Fruit tree diseases, the most common ones

FRUIT TREE DISEASES

apple scab, Clemson University - USDA Cooperative Extension Slide Series, , Bugwood.org

APPLE AND PEARS

Apple Scab
The #1 disease of apple anywhere.

Symptoms:

they are rough fruit

uncommon fruit drop and leaf infection

accompanied by early defoliation.

the following year, you'll find decreased fruit bud growing and general reduction of the strength of the tree.

The fungus that brings on apple scab overwinters in leaf droppings. Early spring winds bring spores into the tree canopy, the consequent is lesions on leaves. Warm rainy climate leads to scab growth. Brand new infections are made through the summer as rains wash the fungus onto other leaves and fruit.

Suggestions:

plant resistant varieties.

gather and take away fallen leaves.

Fire Blight
It can induce grave harm to apple and pear trees.

Symptoms:

fire blight commonly assaults blossoms, but infection and dying of new shoots are usual.

the downward looped twig tip is a feature of fire blight.

Suggestion:

chop off infected twigs and branches 12 inches beneath the dead area.

clean the pruning tool between cuts by dunking in 10% solution of liquid bleach to stave off dispersing the disease.

fire blight, Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org

Sooty Blotch
It and fly speck are usually on the plant at the same time.

It is likely to grow when temperatures are 65-80 degrees F. and when humidity is elevated. The combining occurs most often when nighttime temperatures stay over 65-70 degrees F. during summer, or during expanded warm, rainy amount of time. The infections unvisible at harvest can start in storage.

Suggestion:

only plant disease-resistant varieties.

sooty blotch, Clemson University - USDA Cooperative Extension Slide Series, , Bugwood.org

Fly Speck
It and fly speck are usually on the plant at the same time.

Suggestion:

only plant disease-resistant varieties.

Cedar-Apple Rust

Symptoms:

bright orange blemishes on leaves and fruit.

usually lessen the strength of tree.

The fungus that cause cedar-apple rust finish part of their life cycle on red cedar trees that in spring it brings about large, bright orange, gummy lesions at the ends of branches.

Suggestion:

get rid of nearby Eastern red cedars.

cedar apple rust, Clemson University - USDA Cooperative Extension Slide Series, , Bugwood.org

Pear Scab
Pear scab happens in any place pears are grown. Also known as black spot on account of the dark spots it makes on leaves and fruits. Most tainted pears can still be consumed if the scabby area is taken out.

Symptoms:

it first shows up on the bottom and then after on the side of the fruit.

infected fruit frequently become distorted.

scab spores arise in the winter in infected leaves that are on the ground.

invasion of the body starts at the green-tip phase of flower bud development.

infection is greater when blossoms are exposed, but goes forward for about 6 to 9 weeks.

Suggestion:

get rid of leaf debris and infected fruit in the autumn.

pear scab, Howard F. Schwartz, Colorado State University, Bugwood.org

PEACHES

Bacterial Spot
Bacterial Spot is one of the most damaging disease in all regions east of the Rockies.

It is first sighted about 3 to 5 weeks after petals fall as small, water-drenched, brown lesions. First evidences on fruit can be misidentified for insect damage. During times of high humidity, gum may ooze out from these wounds.

bacterial spot of stone fruits, Clemson University - USDA Cooperative Extension Slide Series, , Bugwood.org

Peach Leaf Curl
peach leaf curl on fruit, Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org