What effect does mulching have in greenhouse weed management?

Mulching plays a significant role in greenhouse weed management by conserving moisture and suppressing weed growth. When mulch, which can be organic (like wood chips or straw) or inorganic (like plastic sheeting), is applied to the soil surface, it creates a barrier that limits the amount of sunlight that reaches the soil. This reduction in sunlight inhibits the germination and growth of many weed seeds. Additionally, mulching helps retain soil moisture by reducing evaporation, which is particularly beneficial in greenhouse environments where maintaining consistent humidity levels is important for plant health.

The ability of mulch to conserve moisture reduces the need for frequent watering, promoting healthier plant growth while simultaneously preventing weeds from taking hold. This dual benefit makes mulching an effective strategy for growers looking to manage weeds sustainably and efficiently.