I. Company profile
Tiancheng Chemical Co., Ltd. is a
collectivized high-tech multi-function fine chemical enterprise, integrated
with science, industry, trade and research, which is mainly engaged in paper
chemicals, Water Treatment Chemicals, rubber and plastic chemicals,
agricultural pharmaceutical intermediates, basic chemical materials, food
additives, detergent additives and electronic chemicals.
II. Technical indicators:
Appearance
Colorless and transparent liquid
Content
60%
pH value
4-5.5
Viscosity (25℃),
mPa·s
≤20
III. Application fields:
1. In the filed of cosmetics, detergents, wool
detergents: With the continuous improvement of people`s living standards, the
demand for cosmetics, washing products and cleaning products is continuously
increasing. As a monomer, the surfactant is applied to many fields, but also
use with non-ion preparations jointly, with the function of penetration,
humidification, washing and electrostatic elimination, providing help and
support for improvement of people`s life and quality of life.
2. In the field of electronic chemicals: the surfactant
can be used in cleaning preparations of the electronic products, with the
function of washing and electrostatic elimination.
IV. Notes:
1. Storage condition: This product is stored in a cool
and dry place (5-30 ℃) to prevent open-air exposure and freezing.
2. If the product storage temperature is below -15 ℃,
there will be crystalline polamer. Before using, please heat and stir evenly,
not affecting the product quality.
3. The product is slightly acidic. If it is
accidentally into the eyes, please wash with water immediately.
V. Packing specification
250 kg plastic drum; IBC tons of barrel;
Flexitank.
Surface Active Agent Tc-1000,Surface Active Agent,Surface Active Agent For Electronic Chemicals Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com
Prevention of Lychee Disease in Litchi and Longan
Rotten foot disease, commonly referred to as foot rot, has become a growing concern in litchi and longan orchards in recent years. This condition primarily affects the main trunk of the tree, with the affected area typically located 20–30 cm above the ground. The bark in this region begins to decay, leading to serious damage that can ultimately kill the tree if left untreated.
**Symptoms of the Disease**
In the early stages, the bark in the infected area becomes rough and gradually turns brown, developing a wet, amorphous rot. Sap may ooze from the affected site, and the decay often penetrates deep into the xylem. When humidity and temperature are high, the infection spreads rapidly both vertically and horizontally, causing the trunk, main roots, lateral roots, and even fibrous roots to rot. In dry conditions, the bark may crack, peel, or become severely damaged. Affected trees often show yellowing leaves that fall off easily, while branches tend to dry out quickly. In severe cases, the tree may flower prematurely but produce fewer, smaller, and more acidic fruits. If the diseased area completely encircles the trunk within a week, the upper leaves turn yellow, branches dry up, and the entire tree dies.
**Conditions Favoring the Disease**
The disease thrives in hot and humid summer and autumn conditions. Orchards that are densely planted, overgrown, or have poor drainage are especially vulnerable. Waterlogging, frequent flooding, and the presence of weeds create ideal environments for the pathogen to spread. Wounds on the main stem caused by pests, cultivation activities, or mechanical damage increase the risk of infection and often worsen the disease.
**Control Measures**
1. **Drainage and Soil Management**: For orchards prone to waterlogging or with high groundwater levels, it is essential to dig drainage ditches to prevent water accumulation. Regular weeding, proper fertilization, and the use of organic manure or phosphorus and potassium fertilizers help keep the soil loose and well-aerated, promoting healthy root development and enhancing the tree's resistance to disease.
2. **Pruning and Air Circulation**: Combine fruit tree pruning with selective thinning of dense, shaded, or weak branches. Remove pest-infested, dead, or hanging branches to improve air circulation within the canopy. A well-ventilated and open structure helps reduce humidity and enhances the tree’s overall health and disease resistance.
3. **Pest Control**: Focus on controlling pests such as the hornbill and single-horned rhinoceros. During their active season, manually remove adults or spray 48% Lufenuron at 800 times dilution on the base of the trunk to kill larvae and prevent them from feeding. Before larvae bore into the trunk, apply 52.25% Emamectin Benzoate at 1000 times or 10% Chlorpyrifos at 2000 times to protect the trunk. For trunks already damaged by pests, mix 50% Carbendazim at 500 times with yellow mud and apply it to the wounds to prevent bacterial infections.
4. **Chemical Treatment**: When the disease appears, scrape off the rough bark and make several vertical cuts to the xylem. Apply a mixture of Bordeaux solution (1:1:10), 12% Copper Oxide at 300 times dilution, or a combination of 53.8% Trifloxystrobin at 500 times diluted with yellow mud. Repeat this treatment every 15–20 days, continuing for at least three applications until symptoms subside. Spray the canopy, inner stems, and tree trunks with 40% Mancozeb at 400 times, 58% Thiram-MnZn at 700 times, or 64% Oryzistatin at 600 times to eliminate pathogens and promote healthy growth.
By implementing these integrated management strategies, growers can significantly reduce the impact of foot rot and maintain the productivity and longevity of their litchi and longan trees.
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