Ningbo Safewell Plumbing Co., Ltd. , https://www.safewellbrass.com
Out of the citrus rust tick prevention and control
In order to improve the effectiveness of **pesticides** in controlling citrus rust mites, it's essential to avoid indiscriminate application. Using "insurance drugs" without proper monitoring can lead to increased costs, environmental pollution, and reduced efficacy due to pesticide resistance. Moreover, applying pesticides at the wrong time may miss the optimal control window—sometimes the treatment is done when it shouldn't be, or not applied when it should, making the "insurance" ineffective.
To manage rust mites effectively, it's crucial to monitor pest populations closely. Farmers should select 3–5 orchards, observe 3–5 plants per site, and check 10–20 fruits randomly. Using a magnifying glass, examine 4 fields per fruit. If the average number of mites per field exceeds 2, or if 20% of the fruit surface is infested, it's time to apply the pesticide. Since citrus rust mites have 18–20 generations per year, early suppression of each generation is key.
Long-term use of the same acaricides, such as dicofol or omethoate, not only harms the environment and agricultural quality but also kills beneficial natural enemies. Over time, this leads to resistance, reducing the effectiveness of these chemicals. Even new pesticides, while initially effective, can lose potency if used exclusively. Resistance develops through selective pressure, allowing resistant individuals to thrive and eventually dominate the population.
To prevent this, the **pesticide network** recommends alternating between 2–3 different types of new acaricides. For example, you can use 34% fenbutatin oxide emulsifiable concentrate (diluted 2000 times), 1.8% abamectin emulsion (diluted 1500 times), 5% chlorfenapyr emulsifiable concentrate (diluted 800 times), and 80% zinc sulfate solution (diluted 800 times). These should be alternated regularly. Applying them in the late afternoon helps enhance their effectiveness, and it's important to spray both sides of leaves and fruits to ensure full coverage.
The overuse of broad-spectrum pesticides that kill natural enemies, such as green copper oxychloride, streptomycin, or pyrethroids, can disrupt the balance of the ecosystem. These chemicals harm beneficial organisms like *Thompson’s bacteria*, which play a vital role in controlling rust mites. After such applications, the population of these natural enemies drops sharply, leading to uncontrolled mite outbreaks.
It’s better to use specific pesticides during dry and hot periods. For instance, 10% mancozeb can control citrus canker, 25% imidacloprid manages scale insects, 50% carbendazim controls anthracnose, and 25% acephate helps with whiteflies.
Lastly, improper irrigation can worsen the problem. Delayed drought-resistant irrigation reduces the plant’s ability to resist mites and hinders the reproduction and activity of natural enemies like *T. sinensis*. Maintaining proper moisture levels is essential for both plant health and biological control.