Precision Agriculture: Turf Industry. Michael Haas April 17, 2011. How is Precision Ag Used in Turf?. Important Areas of Application: Pest / Herbicide Management Fertilization Salinity / pH Irrigation (most talked about)
April 17, 2011
Figure 1. Spatial mapping of soil volumetric water content (left, dark blue = highest VWC) with SSMU boundaries along with topographic map and clay content (determined by soil sampling within SSMU areas.
Figure 2. Spatial variability of soil VWC. Note the wind effects from right to left on spatial VWC patterns.
Figure 3. Complete uniform irrigation design, however due to lack of pressure, there was not head-to-head coverage. Pink = dry
Sites highest in soluble salts are also those most
likely to be highest in Na, which could allow for site-specific application of gypsum rather than whole-area applications.
Seawater has a salinity level of 45 dS./m or 34,000 ppm salts. The bright red areas are approximately the same salinity as ocean water. Site is irrigated with saline water from 4,000 to 7,000 ppm during winter and spring. Sand = less affected