In recent years, the use of pesticides has become increasingly common as a way to address pest resistance or to manage multiple diseases and insect pests simultaneously. However, properly diluting mixed pesticides is a technical process that requires careful attention.
The amount of liquid sprayed per hectare depends on several factors, including crop type, growth stage, field size, spray technology used, and the types of pests and weeds present. Typically, a constant spraying method is employed, with 750 to 1500 kilograms of liquid applied per hectare.
When it comes to the effective dose per hectare for a single pesticide, the standard amounts are generally: 750 grams of insecticide, 1500 grams of fungicide, and 3000 grams of herbicide. In recent years, more efficient insecticides such as pyrethroids and abamectin have been developed, with effective doses as low as 12 to 75 grams per hectare. For mixtures, the total effective dose should not exceed these limits.
The formula for calculating the application rate is:
**Application per hectare = Spraying amount per hectare / Dilution ratio**
**Total effective dose per hectare = (A pesticide's application × its effective dose) + (B pesticide's application × its effective dose) + ...**
For example, a mixture of 50% carbendazim at 600 times dilution, 70% thiophanate-methyl at 800 times dilution, and 12.5% cyproconazole at 2000 times dilution can be used to control stalk rot or wilt disease. The total volume needed per hectare is 850 kg of solution.
To calculate the amount of each active ingredient:
- **Carbendazim**: 850 ÷ 600 = 1.4167 kg
- **Thiophanate-methyl**: 850 ÷ 800 = 1.0625 kg
- **Cyproconazole**: 850 ÷ 2000 = 0.425 kg
The total effective dose is calculated as follows:
**1.4167 × 0.5 + 1.0625 × 0.7 + 0.425 × 0.125 = 1.5052 kg**, which is within the acceptable range for fungicides.
These quantities can be measured separately and then diluted using a two-step method. Mix 850 kg of water, add each pesticide according to the calculated amounts, and spray after thorough mixing. This approach ensures both safety and effectiveness in pest and disease management.
Spill Control Sandbags
Denilco flood control products are mainly used in municipal management, smart cities, water conservancy and drainage, construction, rail transit, factory property management, and relevant departments of emergency management bureaus;
Water absorbing expansion bag
Denilco water absorbing expansion bag has a wide range of applications and can be used for dam heightening and blockage, water containment and overflow prevention, engineering interception, blockage of hidden ditches and holes, reinforcement of flood control dams at any time, temporary flood control works such as urban waterproof sub embankments and block waterproof walls in flood control and emergency rescue. Before absorbing water, it weighs only 275 grams, and after 2-3 minutes of absorbing water, it can reach 20 kilograms. During emergency rescue, it can replace the soil source and quickly construct rescue projects to reduce losses caused by the lack of soil source on the rescue site and inability to rescue in a timely manner.
Specifications
| Name: Non woven water absorbing expansion ba |
Model： DP400 |
| Brand： DENILCO ® |
Size： 400mm*600mm |
| Color： White |
Outer material：four in one ultrasonic polypropylene non-woven fabric |
| Built in：hydrophilic nanoscale SAP functional materials |
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1. Expansion time: ≤ 3 minutes (water temperature environment ≥ 18 ℃)
2. Pressure resistance strength: ≥ 150 Kg
3. Stacking height: ≥ 1.2m
4. Sealing performance: There is no obvious leakage of water absorbing resin debris before water absorption, and the contents do not overflow after water absorption
5. Drop performance: Free fall from a height of 1 meter to a flat concrete floor without damage
6. Sewing thread body: 100% combed fine cotton thread
7. Product weight: 0.27Kg ± 5% before water absorption, 20Kg ± 5% after water absorption
8. Expansion height: 15cm
9. Usage environment: Freshwater acid-base environment 8>PH>5
10. Product packaging: 50 corrugated cardboard boxes/moisture-proof plastic vacuum bags per box
11. Box size: 42 * 36 * 50cm
12. Gross weight/net weight: 15.5KG/14.4KG
13. Storage conditions: Keep in a dry and cool place
14. Shelf life: 5 years
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Spill Control Sandbags,Absorption Sandbags,Quick Absorb Flood Bags,Sand Bag Dam
Denilco Environmental technology(Suzhou)Co., Ltd. , https://www.wflood.com
