Which is a negative consequence of overwatering plants in a greenhouse?

Overwatering plants in a greenhouse can lead to root rot, which is a serious and often detrimental condition for plant health. This occurs when the roots are submerged in waterlogged conditions for prolonged periods, creating an anaerobic environment that fosters the growth of pathogens, particularly fungi. These pathogens attack and decay the root system, preventing the plant from absorbing essential nutrients and water, ultimately leading to plant stress, stunted growth, or death.

Root rot is characterized by symptoms such as yellowing leaves, wilting, and a general decline in plant vigor. Unlike improved nutrient uptake or increased crop yield, which are the results of appropriate watering practices and good soil management, root rot does not support healthy plant development. Understanding the balance of water needs for various plants is crucial in greenhouse management to prevent such negative outcomes.