Reasons for poor use of pesticides
WENZHOU DIYE VALVE&FITTINGS CO.,LTD , https://www.diye-valve.com
Inaccurate diagnosis of plant diseases can lead to ineffective treatments. For example, if early leaf drop in fruit trees is mistaken for red spider mites, or tomato bacterial wilt is misdiagnosed as a soil pest causing root damage, the treatment will fail to address the real issue. This kind of error not only wastes resources but also delays proper intervention.
Incorrect use of pesticides without understanding the symptoms can also be problematic. For instance, using Jinggangmycin to control wheat scab and Dicofol for armyworms may not be effective because these chemicals are not targeted at the correct pests. It's crucial to identify the specific problem before choosing the right treatment.
Timing is another critical factor in pest control. The best results are achieved when treatments are applied at the peak of adult insect activity or just before larvae hatch. If the larvae have already developed beyond the third stage, the crop may already be severely damaged. At this point, even with increased pesticide use, the effectiveness is significantly reduced.
Using too much or too little pesticide is equally harmful. Excessive concentration can cause phytotoxicity, damaging the plants themselves, while too low a concentration may not provide adequate protection. Always follow the manufacturer's instructions and guidelines for safe and effective pesticide application.
Targeted spraying is essential for optimal results. In the case of cotton red spider mites, it’s important to spray the underside of the leaves where the pests reside. Spraying only the upper surfaces may not reach the infestation, reducing the overall effectiveness of the treatment.
Weather conditions also play a significant role in the success of pesticide applications. Factors like temperature, humidity, rainfall, dew, wind, and sunlight can affect how well the pesticide works. For example, after applying emulsifiable concentrates, it's advisable to avoid rain for at least 24 hours to ensure the chemical remains on the plant. Similarly, stomach and contact pesticides should not be washed away by rain for at least two days. Monitoring local weather forecasts and choosing the right time for spraying can greatly improve the outcome.
By understanding these key factors—correct diagnosis, proper timing, accurate dosage, targeted application, and favorable weather conditions—farmers and agricultural professionals can significantly enhance their pest management strategies and achieve better crop health and yield.