Insulated Composite Insulation Air Duct Insulated Composite Insulation Air Duct,Fabric Air Duct Colling Systems,Fabric Duct,Fabric Ductwork Jiangsu Buna Technology Development Co. , Ltd. , https://www.bunaduct.com
For crop spraying, the effectiveness of bio-pesticides depends not only on crop growth stages but also on weather conditions, particularly rainfall. According to the **Pesticide Network**, applying pesticides after rain often yields better results than during or before rain. Rain can actually help in the distribution and absorption of the pesticide.
First, it's important to choose the right type of pesticide for rainy seasons. Systemic, fast-acting, rain-resistant, and microbial-based pesticides are recommended. For example, systemic pesticides like carbendazim, triadimefon, thiophanate-methyl, monocrotophos, carbofuran, methamidophos, dimethoate, omethoate, and phosphonamide are absorbed by plants within 4 to 5 hours after application. This rapid uptake reduces the risk of wash-off due to rain.
Fast-acting insecticides such as dichlorvos, Sumicidin, fenitrothion, Decis, Kuaishaling, metolcarb, pirimicarb, and pyrethroids work quickly, killing pests within 1 to 2 hours or up to 4 to 5 hours post-application. These products are less affected by wet conditions.
Fungicides like Jinggangmycin, trimethoprim, tricycline, and kelicin are highly rain-resistant. Even after 1 to 5 hours of rainfall, their efficacy remains largely unaffected.
Microbial pesticides, such as *Penicillium* species and *Beauveria bassiana*, thrive in high humidity. Applying them during rainy periods can enhance their germination and reproduction, maximizing their pest control potential.
To improve adhesion, adding an adhesive like washing powder to the pesticide solution can be beneficial. A common method is to mix 50–75 grams of detergent powder into 50 liters of pesticide solution. This helps the pesticide stick better to both crops and pests, increasing its effectiveness.
The **China Pesticide Network** advises that while these practices are effective, they should be used appropriately and not over-relied upon for long periods. Always follow local guidelines and ensure safe and responsible pesticide use.