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When installing plastic sheeting for moisture control, it should cover what percentage of the soil?

  1. 50%

  2. 60%

  3. 70%

  4. 80%

The correct answer is: 70%

The correct answer indicates that when installing plastic sheeting for moisture control, it should cover 70% of the soil. This level of coverage is generally recognized as effective in preventing moisture from evaporating into the air, which helps in managing humidity levels and reducing the chance of mold and other moisture-related issues. Covering the soil with this percentage allows for sufficient control of moisture without completely enclosing the area, promoting a balance between moisture retention and air circulation. This is particularly important in agriculture and gardening, where soil moisture is crucial for plant health. Fully covering the soil or opting for significantly higher percentages may lead to issues such as poor air drainage or hindrance to beneficial soil microbes. Therefore, a 70% coverage strikes a balance that aligns with best practices in pest control and moisture management.