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Fertilization is not recommended during this period, especially basal fertilizer, and nitrogen fertilizer can not be applied more.
At this time, basal fertilizer can not be applied, which will hurt the roots, weaken the absorption capacity of the root system, and insufficient water will affect the expansion of the fruit; The fertilizer effect is slow, and it cannot meet the needs of fruit and new shoot growth; In the later stage, the fertilization effect will cause the vigorous growth of new shoots and secondary shoots, affect the development of fruits, and also cause the growth of greedy greens, and the poor lignification degree of new shoots, which will affect the safe wintering of the tree.
Foliar fertilizers and special foliar fertilizers, such as potassium dihydrogen phosphate, can be sprayed at this time, but now people are increasingly concerned about grape quality and food safety, so they try not to apply chemical fertilizers or use less fertilizers.
Water more at this time.
The grape expansion period is the peak period of water demand, and watering must be timely, at this time, the lack of water seriously affects the expansion of the fruit. It is necessary to ensure sufficient moisture to promote the expansion of the fruit. As long as it doesn't rain, water it every few days until the berries are soft and begin to color.
During the berry coloring period, stop watering to improve berry coloration and berry quality.
After the berries are harvested, basal fertilizer mainly organic fertilizer is applied to the soil and watered enough.
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*Yes**, pyraclostrobin can be used in the young grape fruiting stage. This high-efficiency and low-toxicity fungicide has a good effect on the prevention and control of fungal diseases such as anthrax. To use, pyraclostrobin can be added to water and sprayed evenly on the young grapes.
Note, however, that the agents should be used on a rotational basis to avoid the development of resistance. In addition, it is strictly forbidden to use grapes after veraison.
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Yes, but pay attention to the concentration, otherwise it will affect the development of young grapes. The growth period of young fruits is the peak fertilizer demand of grapes in a year, and fertilization at this time not only promotes the growth of young fruits, but also has a good effect on the growth of branches and leaves of the year, so it is recommended to use imported high-potassium water-soluble fertilizer.
It is beneficial to promote the expansion of grape fruit grains and the effect of uniform coloring, coloring fertilizer: also known as ripening fertilizer. Postharvest fertilizer:
After the fruit is harvested, due to the large nutrient consumption of the tree, fertilization is required to ease the tree and delay defoliation. Top dressing begins in mid to late April, and fertilization is carried out using drip irrigation.
2kg of water-soluble compound fertilizer with nitrogen, phosphorus and potassium content of 15:15:15 can be applied per mu, which can be used at the same time as water-soluble fertilizer and water fertilizer, once a week, during which the soil is kept moist.
At the same time, during the grape growing season, according to the grape's nutrient requirements, topdressing can be carried out outside the roots. If the grapes are sprayed with foliar fertilizer after fruit set, they can continue to supplement nutrients, and Yanwo potassium dihydrogen phosphate can be used to supplement the phosphorus and potassium needs of the tree. 7-10 days after fruit harvest, it helps the plant to regulate growth, promote nutrient absorption, and restore the tree's vigor as soon as possible.
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Usage and dosage on grapes.
1) How to use it?
For example, to prevent downy mildew, powdery mildew, gray mold, brown spot, cob brown wilt, etc., pyraclostrobin can be added, and it can be used alone when the grapes are on the first leaves, and the leaves will also turn green. (Pyraclostrobin has a significant effect on the control of powdery mildew and frost fruit in grapes, even when the disease is severe.) )
If you want to reduce the number of diseases in grape planting, you can choose to apply water-soluble fertilizer to fertile leaves.
2) How much should I use on grapes?
30 catties of water on grapes under normal single use, use 10 grams to 15 grams; If you mix it, use 10 grams of a pot of water; 100 grams of pyrazole, mixed with 300 pounds of water, compound depends on what disease you fight, such as: grape downy mildew, you can use it with downy mildew or enoylmorpholine.
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Imazole is a kind of fruit preservative used in the erection, mainly for soaking and preserving fruits after harvest, and it can also play a role in preserving the freshness of grapes. These drugs can also prevent and control gray mold in grapes. Once infected with gray mold, it will cause new shoots and young leaves to be susceptible, and will produce reddish-brown or light brown lesions on the remaining skin.
If the fruit is susceptible after sizing, it will rot. Therefore, when found, it is necessary to spray 1000-2000 times the agent before the attack, and pay attention to the uniform spraying of the foliage.
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Summary. Hello, dear, imazole is a commonly used fruit preservative, mainly for fruit soaking after harvest preservation, in the application of grapes it can also play a role in preservation. These drugs can also prevent and control gray mold in grapes.
Once infected with gray mold, it will cause new shoots and young leaves to become susceptible to the disease, and will produce reddish-brown or light brown lesions. If the fruit is susceptible after sizing, it will rot. Therefore, when found, it is necessary to spray 1000-2000 times the agent, and pay attention to the uniform spraying of the foliage.
Hello, dear, imazole is a commonly used fruit preservative, mainly for fruit soaking after harvest preservation, in the application of grapes it can also play a role in preservation. These drugs can also prevent and treat gray mold in grapes. Once infected with gray mold, it will cause new shoots and young leaves to be susceptible, and will produce reddish-brown or light brown precession lesions.
If the fruit is susceptible after sizing, it will rot. Therefore, when found, it is necessary to spray 1000-2000 times the agent, and pay attention to the uniform spraying of the foliage.
Do not use it when the grapes are young.
What crops do you use it for? The esters of methoxyacrylate pesticides such as azoxystrobin can also dissolve another ester, and the epidermis of our plant foliar surface is composed of various keratin, wax, lignin, they are all a class of esters, that is, similar to each other, azoxystrobin spray on the leaves will cause the wax and keratin of these esters to rearrange, greatly increasing the permeability of the leaves. Then there will be two situations at this time, the first type of permeability on the leaf increases, resulting in an increase in the evaporation of the leaf, resulting in the leaf wilting, dying, which leads to pesticide damage, which is the reason why it cannot be mixed with silicone, because the silicone will increase its ductility and make the process faster. >>>More