black stem rust and several viruses thus far ( Nabhan, 2009 ). Hopi and Navajo, CO Plateau of the Southwestern United States. Vavilov traveled extensively in North America ( Fig. 3 ) and in 1930 he came to Arizona on the invitation of Dr. Homer Shantz
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Joanne Logan
of potable water ( Krishna, 2005 ). Parts of Australia and the southwestern United States have embraced rainwater harvesting as a serious way to augment sparse and irregular water supplies ( Lancaster, 2010 ). In Chicago, during the period 2004
Lenny Wells
Georgia, Texas, and Oklahoma, and in the arid southwestern United States, far removed from the natural range of the species. Many thousands of acres of trees (mostly ‘Western Schley’) were planted in western Texas, New Mexico, Arizona, and California. This
Bruce W. Wood
-drained acidic soils and on soils from phosphatic rocks. Deficiency is common in the acidic soils of the southeastern United States and the high pH, calcareous soils of the southwestern United States. There has therefore been extensive research, spanning several
Marisa T. Potter, Richard J. Heerema, Jill Schroeder, Jamshid Ashigh, Dawn VanLeeuwen, and Cheryl Fiore
irrigation districts and groundwater supplies throughout the Southwest. Orchard floor management practices of pecan growers in the southwestern United States are varied, ranging from only periodic mowing of vegetation to complete vegetation control through
Michael W. Smith, Bruce W. Wood, and William R. Raun
southwestern United States, flood irrigation is typical, trees are mechanically pruned, orchard floors are clean-cultivated, sunlight intensity is greater, and there are fewer cloudy days. In the south-central United States, most orchards are not irrigated, and
M. Lenny Wells
southwestern United States, AS is commonly used in pecan orchards as the N source where dry fertilizer is used. Pecan producers in the humid southeastern United States more commonly use the AN or urea forms of dry N fertilizer. The disparity between N source in
Robert F. Heyduck, Dawn VanLeeuwen, and Steven J. Guldan
Mexico, and the southwestern United States in general, experiences more winter insolation than those locations. These yield estimates may not apply to other cultivars of kale, but in a Colorado study, Red Russian yielded more than Dinosaur and Winterbor
Kathryn M. Kleitz, Marisa M. Wall, Constance L. Falk, Charles A. Martin, Marta D. Remmenga, and Steven J. Guldan
Cruces, they appeared stressed, small, and slightly wilted. Stinging nettle does not appear well-suited for the hot, dry summers and the alkaline soils with low organic matter that are common in the southwestern United States. In their native habitat
Bruce W. Wood
, aerosols, and particulates) sunlight during the growing season as compared with ≈80% to 90% in a high-light environment such as the southwestern United States and has mean annual relative humidity of ≈70% ( Jacobs, 1968 ). Orchard management characteristics