Carrot radishes, which belong to the radish genus, typically have a very short growth cycle, usually between 7 to 14 days. Due to this brief growing period, the use of chemical pesticides is strictly prohibited in their production. Instead, only biological control methods—such as integrated agricultural practices—are employed. For example, silver-gray shading nets are commonly used throughout all weather conditions to protect the crops from pests and environmental stress.
In contrast, "drum radish," which has a longer growth period ranging from 20 to 40 days, faces more significant pest challenges, especially during hot and dry seasons when pests like aphids and cabbage caterpillars become prevalent. In such cases, if chemical pesticides are necessary, they should be applied no later than 10 days before harvest. Pesticides such as dichlorvos, phoxim, cypermethrin, deltamethrin, and fenvalerate must be used strictly according to the guidelines for pollution-free vegetables. These guidelines can be found in the standards for Chinese cabbage and other leafy vegetables.
To ensure safety and sustainability, it is strongly recommended to prioritize biological control methods. Using silver-gray shade nets consistently under all weather conditions remains one of the most effective and environmentally friendly approaches. By combining these strategies, farmers can maintain high-quality produce while minimizing chemical exposure and protecting the ecosystem.
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