First, the symptoms
Apricot root rot pathogens spread through rain and soil and invade the fibrous roots first and then spread to their associated or similar main roots. The corresponding lesions appear on the ground. When the lateral roots and part of the main root are rotted, the phloem becomes brown and the xylem becomes necrotic or rot. The symptoms of above-ground performance are as follows:
The leaves of the blade are only present in the new shoots of the current year, with the tip and leaf edges scorching, while the middle of the leaf remains normal green. The tree is weak and grows slowly. In severe conditions, the leaves turn yellow and fall off. The growth of these diseased trees is still relatively normal, and it is generally not easy to attract attention.
After the shoot wilt type diseased plant sprouted, the growth in the early stage was normal, but when the shoot length reached 10 cm, the leaves of some new shoots curled upwards, the leaves became small and pale, the growing tendency gradually weakened, and the leaves showed symptoms of dehydration, 2- After 3 days, the leaves withered and died. This type is more common and easily noticeable.
This type of wilting death mainly occurs in the high-temperature and rainy season of July-August and has a rapid onset. Normally in the spring, the results of shoot growth are normal. After the high temperature and rainy season in summer, the whole plant suddenly died. This type of disease strain has a large degree of harm, it is sudden and difficult to rescue, but the proportion is small.
Second, the incidence of the law
The symptoms of root rot of apricot trees generally appear from the beginning of May in the ground and continue until late August. When the tree vigor is strong and the soil and fertilizer water management conditions are good, the tree is not affected.
Third, prevention and control measures
1. It is strictly forbidden to repeat the disease. This disease mainly occurs in the apricot garden where the nursery is replanted and in the apricot tree line. Therefore, the strict prevention of seedlings between rows of trees can effectively prevent the occurrence of diseases.
2, diseased tree rooting on the diseased plants, if it is a big tree, in the crown of the trunk depth of 50 cm from the main excavation depth of 30 cm wide ring groove, in the ditch into the fungicide, and then the original soil Fill in the ditch; if it is a young tree, use an iron bar to nail the eye in the root of the tree, reach deep into the root distribution layer, and inject medicine into the eyes. The commonly used agents are: 2-4 Baume degrees lime sulfur, 200 times copper sulfate solution. The amount of large trees is 15-20 kg/plant, and the amount of young trees is 5-10 kg/plant.
3, after taking turns to control the drug into the high temperature and rainy season, use 2-4 Baume degrees of lime sulfur filling root. In the middle and late October, the diseased plants were flooded with 200 times copper sulfate solution. Decanting before and after the fall and the second spring.
4. Early prevention of apricot plants with a history of root rot can be rooted with 200 times copper sulfate and other agents from late April to early May. The seedlings cultivated in the affected area should be disinfected prior to planting and then planted. Irrigation prevention can effectively prevent diseases
5, comprehensive management in the prevention and treatment of disease, reduce the amount of results, increase fertilizer, strengthen underground management, increase tree vigor, thereby enhancing the tree's disease resistance.
Fixative (dye-Fixing Agent)
Active Ingredient: Quaternary ammonium salt cationic surfactant
Chemical Name: Formaldehyde-free Fixing Agent
Chemical Family: PolyDADMAC
CAS No.: 26062-79-3
1.Formaldehyde-free Fixing Agent
2.Has no free formaldehyde,no peculiar smell,no irritation to skin, accord to eco request
[Description]:
Formaldehyde-free Fixative Color Fixing Agent is belongs to polymerization polyDADMAC, a cationic polymer. It can make up of macromolecular compound with dye, then achieve to improve soaping and rub fastness of fabrics. It can be used for color fixing for dyeing and printing of reactive dyed fabrics as cotton, linen, silk, and direct dyed fabrics.
[Specification]:
Appearance: Brownish yellow viscous liquid
Ionic character: Cationic
PH Value: 5-8 (1% aqueous solution)
Dissolution: Dissolve in cold water easily.
Composition: Special polymer compound
[Dilution Method]:
With 4-6 times the water and stir to dissolve dilution.
[Direction for Usage]:(To dilute finished product as an example)
A. Padding Process: 5-20g/L, temperature 40°C-60°C, PH Value:5-8, One-dip-one-nip or Double-dip-double-nip.
B. Dipping process: 1-4% (O.W.F), Room temperature 40°C-60°C, PH Value:5-8, bath ratio:1:8-12,Time: 20-30 min.
[Properties]:
1. Concentrated Formaldehyde-free Fixative Fixing Agent has good color fixing property, can obviously improve the dyeing or printing of fabric soaping, washing fastness and wet rubbing fastness.
2. Can be used for much of the association between dye fixation, anti fading property, does not affect the dyeing or printing of fabric vividness. No effect for the original feel, processing fabric has excellent hydrophilic.
3. Formaldehyde-free Fixative widely used for dyeing or printing of the direct, active dye fixing finishing, good fixation effect, especially for the red dye and Cuilan dyes, particularly prominent, fixation is better than the general Formaldehyde-free Fixative.
4. The dye PH value for a wide range, acid, alkali resistance, resistance to hard water, high temperature resistance, an environment-friendly products, does not contain formaldehyde.
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Specifications: |
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| Appearance: | Colorless, Transparent Colloid |
| Viscosity: | 100cps-80000cps |
| Solid Content: | 40%min. |
| PH (30% solution): |
3 - 7 |
| Ionic Nature: |
Cationic |
| Specific Gravity: | About 1.1 |
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Package and Storage:
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Fixative,Dye-Fixing Agent,Organic Dye-Fixing Agent,Reactive Dye-Fixing Agent
Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com