Five-Year-Old Cottonwood Plantation on a Clay Site: Growth, Yield, and Soil Properties

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Abstract
A random sample of Stoneville select cottonwood (Populus deltoides Bartr.) clones planted on recent old-field clay soils at 12- by 12-foot spacing averaged 75-percent survival after five years. The growth and yield was about half that expected from planted cottonwood on medium-textured soils. Soil moisture analysis showed more height growth in years with greater moisture late in the growing season. Significantly less soil N, P, K, Ca, Mg, and organic matter were in the plantation after five years than at the start. Also, no clear relationship existed between nutrient level and fifth-year average height.

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