Soil Textural Analysis
Fig. 1. A schematic with soil layers and soil texture for the drip and fanjet sites.
Representative soil layers and differences of soil profiles between the drip and fanjet site is shown in Fig. 1. The top one meter of soil profile at the fanjet site consists of coarse material, allowing quick infiltration of applied irrigation water. The profile includes two 20-30 cm thick fine-textured soil layers at approximate depths of 130 and 200 cm.
These layers will prevent and/or delay of downward water movement below the root zone. Though slightly different, the soil textures and layering are similar for the drip site.
Fanjet Application Pattern
The spatial distribution of the fanjet wetting pattern is shown in Figure 2 (below). A very non-uniform application pattern results the variation of water distribution and therefore a variation of root distribution within the root zone
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Fig. 2. Spatial distribution of fanjet application pattern. The contoured values represent the total irrigated water captured (ml) over one hour irrigation event.
For more information see the presentations and publications under Outreach