When cornfields are infested by pests, especially the Small Brown Stalked Bug (SBPH), farmers often resort to frequent applications of chemical pesticides to manage the population. However, this practice has led to numerous incidents caused by improper or excessive use of agrochemicals in recent years. As a result, it is crucial to prioritize safe and responsible pesticide use when managing SBPH infestations.
In the field, when using organophosphate and pyrethroid insecticides to control SBPH, it's essential to strictly follow recommended dilution rates. For example, 48% chlorpyrifos emulsifiable concentrate is typically diluted at a ratio of 2000 times, and should never be diluted less than 1000 times. Pyrethroid-based pesticides are generally applied at a dilution rate between 2000 and 3000 times. Over-concentration can lead to phytotoxicity, which may damage the corn plants and reduce yield.
Some insecticides, such as dichlorvos, phoxim, and fenvalerate, are particularly risky due to their high potential for causing plant injury. These chemicals are often not recommended for use in corn fields because of their negative impact on crop health. Farmers are encouraged to choose safer alternatives and always read and follow label instructions carefully to ensure both effective pest control and crop safety.
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