More and more growers are utilizing wood-based substrates for production. Whether the mix has a small percentage of wood (10 to 20%) or a larger volume (40+%), there is a need to change the way one manages growth and irrigation.
A number of growers have talked about the need to change their irrigation practices. Typically, one would observe drying of the surface layer of the pot and know it is getting time to irrigate. Wood-based substrates require another step when determining the need to irrigate. Growers are discovering that while the soil surface may be dry with a wood-based substrate the remaining profile of the soil column oftentimes is still saturated. This means that irrigation is not needed at that point.
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