Agriculture Reference
In-Depth Information
FIGURE 7:
Average nitrate concentration in sediment samples obtained from the upper
part of the vadose zone underlying: (1) organic greenhouses that implement compost as
the sole fertilizer, (2) conventional greenhouses that rely on fertigation, and (3) organic
greenhouses that use fertigation rather than solid compost.
FIGURE 8:
Nitrate concentrations in the vadose zone underlying greenhouses fertilized by
solid fertilizers as compost and guano and liquid fertilizers.
