In winter, low-temperature crops are more vulnerable to pests and diseases. When applying pesticides during this season, it is essential to strictly follow the recommended dilution ratios. Reducing the amount of water should be avoided, as it can affect the effectiveness of the treatment.
1. Extend the safety interval between pesticide applications. Winter conditions slow down the degradation of pesticides, leading to longer residue periods in crops. This is especially important when managing pests and diseases in vegetables and flowers. Careful attention must be given to increasing the safety interval to protect human health and prevent accidental poisoning.
2. Adding a small packet of "medicine primer" or 15 grams of vegetable oil to each barrel of the solution can improve adhesion, but this method should not be used on edible vegetables.
3. Increase the dosage appropriately. The lethal dose of pests varies with temperature—higher temperatures usually reduce the required dose. In winter, however, the dosage should be increased to ensure effective pest control. However, the increase should be based on the actual temperature and should generally not exceed 50% of the conventional amount. It's crucial to follow the dilution instructions precisely and avoid reducing the water volume without reason.
4. Apply pesticides on sunny days with higher temperatures. During hot seasons, spraying after 4 PM is often most effective, as plants absorb the maximum amount of pesticide then. In winter, it's best to choose warm, sunny days. For example, applying herbicides on such days allows weeds to absorb the chemical quickly and in large quantities, making it harder for them to metabolize the substance, thus achieving better weed control.
5. Prioritize soil-applied pesticides. These are typically more cost-effective but may cause phytotoxicity. However, fruit trees are more resistant to pesticides during their dormant phase in winter. Using products like Bordeaux mixture or sulfur-based solutions is both economical and efficient for pest control during this time.
6. Choose pesticides that perform well in cold weather. Stomach poisons and contact insecticides are less affected by temperature, while systemic and fumigant types are more sensitive. For instance, trichlorfon, dichlorvos, and others may lose effectiveness at low temperatures. On the other hand, pyrethroids like deltamethrin and phosphorothioate compounds like phoxim, as well as sulfur-based mixtures, work well even in colder conditions. Therefore, it’s advisable to use these types of pesticides in winter. Herbicides applied in cold weather take longer to show results, but once properly sprayed, reapplication is usually unnecessary.
Toilet Brush Holder,Decorative Toilet Brush Holder,Toilet Brush Holder Cleaning,Toilet Brush Holder Use
Kaiping Jenor Sanitary Ware Co., Ltd , https://www.jenorsanitary.com