One or more windbreaks or shelterbelts of closely spaced trees and/or shrubs planted perpendicular to the prevailing troublesome winds. "Wind shadows" created to the leeward side of these barriers achieve desired purposes. A single windbreak may consist of one to many rows to insure adequate density of branches, stems and leaves.
Some Primary FOTGPractices for this System:
Conservation Crop Rotation (328)
Residue Management (329, 344)
Cross Wind Ridges (588)
Cross Wind Trap Strips (589C)
Herbaceous Wind Barrier (603)
Windbreak/Shelterbelt Establishment (380)
Irrigation System (441), Irrigation Water Management (449)
Nutrient Management (590)
Pest Management (595)
Reduce wind velocity in the wind shadow area to: 1) control wind erosion, 2) deposit snow uniformily, 3) increase crop quality and production, and 4) improve water use efficiency.
Key Design Elements:
35-60% density barriers (during the erosion period) with the windbreaks at intervals across a field from 5H to 20H (agricultural fields between windbreaks are generally greater than 200 feet wide).
Tree/Shrub Species Requirements:
Adapted to the soil and climate of the planting site.
Low to moderate root and crown spread to minimize competition with adjacent crops.
Resistance to pests and herbicides.
Resistance to stem and branch breakage from high winds, ice, snow.