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Christmas tree production using the runoff farming system
- Fink, Dwayne H., Ehrler, William L.
- Hortscience 1986 v.21 no.3 pp. 459
- Christmas trees, Cupressus arizonica, Pinus brutia var. eldarica, clay soils, crops, farming systems, irrigation, runoff, sandy soils, sodium chloride, terraces, trees, watersheds, waxes, Arizona
- Runoff farming was used to produce Eldarica pine (Pinus eldarica Medw.) and Arizona cypress (Cupressus arizonica Green) as Christmas trees in a semiarid, 300-mm precipitation zone in Arizona. Natural precipitation was supplemented with runoff from treated, noncropped catchment-terraces adjoining the cropping area. Catchment treatments were wax (0.5 kg.m-2) on a sandy soil and sodium chloride salt (1.1 kg.m-2) on a clay soil. Terrace widths were varied to provide the crop an estimated 2, 3, and 4 times the precipitation. Trees were hand-watered from March to August the first year to ensure establishment. Regardless of terrace width, 90% of the cypress on the wax site were marketable in 3 years, and 90% of the pines on the salt site were marketable in 4 years. The other 2 tree-treatment combinations were less successful because of soil-species interrelated problems.