What kind of disease is this spot on the leaves of cherry tree and what kind of medicine should be used to cure it

This is bacterial perforation disease, which is commonly found in cherry, peach, apricot, plum and other drupe fruit trees. It is recommended to spray agricultural streptomycin sulfate or new phytomycin to prevent and control (according to the instructions to water spray).

What is the best medicine for cherry trees with spotted defoliation disease

To prevent and control bacterial perforation disease, you can spray agricultural streptomycin sulfate or new phytomycin. The dilution concentration is used according to the instructions.

What disease of cherry tree leaves? What medicine to use?

Hello! From the pictures you sent of cherry tree leaves with spots, it looks like brown spot disease.

Control measures:

1, strengthen the management of water and fertilizer, enhance the tree, improve the tree's ability to resist disease, winter pruning after the thorough removal of orchard diseased branches and leaves, centralized deep buried or burned to reduce the source of overwintering disease.

2, pharmaceutical prevention and control: 7 to 10 days after the flower, the tree sprayed 2 times in a row, the interval of 15 days. 7, August rainy season can be sprayed again one or two times.

The choice of agents are (1) 1.5% doxycycline 300 to 500 times, good prevention, many years of continuous germs without resistance. (2) 10% Baolian ~ 1500 times liquid. (3) 80% Dasheng 600 times liquid.

What is the disease of cherry tree leaves long these red spots ah?

It is bacterial perforation disease, the cause is too much humidity in the surrounding air, the germs grow and spread. You can spray agricultural streptomycin or neophytin to prevent and control.

What is the disease of cherry tree newborn leaves rolled how to control

Determined to be a virus, you can go to the Baidu posting bar of the root-knot nematode bar to find a biopesticide 30% suspension spray A few times on the cure

Cherry tree this kind of leaves to fight what medicine

This situation has four reasons (should be one of them):

1, the sun is too strong sunshine.

2, spraying or spraying fertilizer concentration of large burning.

3, too much fertilizer burned.

4, caused by potassium deficiency.

This cherry tree is what disease? What kind of medicine can cure it? Please point out

It should be caused by overwatering.

Rescue methods: open a ditch next to the tree drainage, look at the rotting roots to decide whether to use the rooting powder to irrigate the roots.

The most fundamental is to solve the permeability of the garden soil, increase the content of soil organic matter, improve the oxygen content of the soil till. Prevent waterlogging.

Cherry has five fears:

1, afraid of drought

Cherry's root system is very shallow, only distributed in the soil layer of 5-30 centimeters, the main root is undeveloped, mainly by the lateral roots to the oblique side direction. Although the root system is shallow but the leaves are large, constantly transpiring water, if you do not replenish water in a timely manner, the leaves will wilt, so there is also a cherry is not away from the water, the construction of the garden must be built in a place where there is watering to build a cherry garden.

2, afraid of water

The cherry tree is afraid of water, soak a day tree is ruined. It turns out that it is both afraid of drought and flooding, if the water content in the soil exceeds 25%, the root system of the cherry will suffocate, rotting roots, root cancer, runny gums and other phenomena, and even lead to the death of the tree's yellow leaves and leaf drop. From this point we know that to choose the cherry orchard also can not choose the floodplain.

3, afraid of the wind

Afraid of the wind, but also from the characteristics of the root system, the cherry root system is shallow, the main root is less, more lateral roots, in case of a strong wind can be blown off, which means that when you build a garden, you have to analyze the wind in this area, whether it will be blown down to the cherry.

4, afraid of sticky

Cherry tree on the land requirements are also more demanding, it likes the soil layer deep, loose texture, high fertility grain loam, sandy loam, loam and light soil, do not like clay soil, in the sticky soil, the root system in the viscous soil is poorly developed.

5, afraid of salinity

Cherry trees are more sensitive to salinity, such as soil salinity more than 0.1%, cherry trees are prone to yellow leaf disease, there will be boron deficiency, iron deficiency, calcium deficiency and other comprehensive deficiency.

In addition to the above points, the cherry also has certain requirements on the climate, it is suitable for planting in the area of the average annual temperature of 7-14 degrees Celsius, the average daily temperature is higher than 10 degrees Celsius in a year between 150-200 days, the lowest temperature in winter can not be lower than minus 20 degrees Celsius.

The cherry tree has high nutrient requirements, when the organic matter content in the soil reaches 4-6% or more, three years into the fruiting period, four years to reach the productive period, mu yield can reach 2000 kg (2 tons) or more, when the organic matter content in the land is less than 1%, the fruit is small, poor taste, low yield.

Cherry tree leaves deformed, ask what disease

Causes and countermeasures to roll the leaves of the cherry tree:

(1) due to the hot weather and the lack of water in the plant, as long as the plant is more water or appropriate shade, the symptoms can be relieved.

(2) may be aphid damage, aphids gather in the back of the leaves to suck the sap, resulting in curling and crumpling of the leaves. For aphids, 10% imidacloprid 2000 times liquid, or pyrethroid pesticides for spraying control.

In addition, cherry lack of nutrients can also lead to leaf curl:

(1) potassium deficiency, leaf edge scorching, from the lower part of the new tops gradually expanding kit to the upper part of the mid-summer to the end of summer in the old trees on the leaves of the scorching, and sometimes the leaves are greenish green, and then the edge of the leaf and the main veins are parallel curled, fading green, and then burned-like. Solution: Spray 0.2% to 0.3% potassium dihydrogen phosphate during the growing season, or soil application of potassium sulfate.

(2) Calcium deficiency, the tip of the young leaves at the top curled in a hook shape, a few days later became brownish-yellow scorched. Solution: Use calcium preparations GA Calcium Bao, Merrill High Efficiency Calcium, Calcium Lactate and other good results.

(3) lack of molybdenum, leaf vein loss of green, or even yellow, easy to appear yellow or orange spots of varying sizes, long and thin deformed leaves, leaf edge upward curled into a cup, and ultimately, the leaf flesh off the mutilated. Solution: foliar spray 1.2% ammonium molybdate solution.

I planted a cherry tree, the leaves have spots. Is it infected with bacteria?

Cherry leaves with spots, is got bacterial perforation disease, now has reached the late stage, there is no need to spray control, you can cut off the heavy incidence of the leaves.

Next summer (June-August) early spraying (agricultural streptomycin, neomycin, etc.) control.

What kind of medicine is used to cure the oil of large cherry trees

The good use of ulcerating rotting spirit