While it is possible to control humidity in an enclosed greenhouse using a dehumidifier or other means, it is important to maintain adequate airflow to prevent stagnant air from negatively impacting plant growth. Even with low humidity, stagnant air can lead to poor plant growth, as plants require a constant supply of fresh air to facilitate respiration and transpiration. So while controlling humidity is important, it should be done in conjunction with proper ventilation and airflow to ensure healthy plant growth.
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