Treatment of scab disease in peach trees

Peach scab disease, also known as black spot disease and black mole disease, is a common disease of this fruit tree. Black spots and cracks appear on the fruit after the disease. What is peach scab cure?

1. Treatment of peach scab

If scab symptoms appear, spray 90-150 times of Liangguo An +1000-1500 times of garlic oil for 3 times continuously, with an interval of 2-3 days each time. Note that the back of the leaves should also be sprayed. Severe cases can be compounded with corresponding chemical drugs.

Liangguo 'an is compounded from a variety of traditional Chinese medicines, with high safety and no drug resistance. The cumulative effect is better when used every year. It can be used in high concentration, continuously, shorten the interval, compound, and use strong medicine to control the disease.

II. Prevention and control measures of peach diseases

1. Peach leaf shrinkage disease. It mainly damages leaves, shoots and young fruits.

Control measures: (1) Spray Bordeaux mixture (1:1:100) or Bordeaux mixture (5:1) when peach buds expand but not sprout in spring;

(2) After the diseased leaves are found, they are removed and burned in time before the formation of asci layer.

2. Peach scab. It mainly damages fruits, but also shoots and leaves. At the beginning of fruit disease, dark green round spots appear on the fruit surface, and then gradually expand.

Control measures: (1) spray Baume 5° stone sulfur mixture before germination to eliminate or reduce overwintering bacteria source on branches, spray Baume 0.2-0.4° stone sulfur mixture every half month from half month to June after flower drop, 0.5: 1:100 zinc sulfate lime solution;

(2) Combined pruning in winter to remove diseased branches or eliminate and reduce overwintering pathogens.

3. Peach anthracnose. Symptoms: young fruit infected dark brown, developmental arrest, atrophy and sclerosis. When the larger fruit is infected, dark green water-stained spots occur on the initial fruit surface, and the enlarged depression is dark brown.

Control measures: (1) pruning in winter to remove diseased branches and fruits, reduce the source of disease;

(2) spraying Bome 5° stone sulfur mixture before germination, spraying organic sulfur preparation 600 times solution or 70% thiophanate-methyl WP 1000 times solution from the time when the fruit beans are big;

(3) Pay attention to orchard drainage and apply fertilizer properly to prevent excessive growth.

4. Peach tree rot disease. Main damage trunk and large branches, causing dead trees, serious disease when the whole body flow glue, bark tissue rot, wet distiller's grains smell, dry shrinkage later, dense black dots.

Control measures: (1) Cultivate tree vigor, strengthen fertilizer and water management;

(2) Scratch the disease spots in time until the xylem. After scraping, apply 40% arsenic thiram or 50% antibacterials.

(3) Burn the sick dead branches sawn every year in time, and do not stack them near the orchard.

Different diseases need to take corresponding measures, mainly to take comprehensive control measures, the source of disease will be suppressed and removed, so that it has no chance to damage the plant.