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United States Department of Agriculture

Agricultural Research Service

Title: Nutrient Cycling from Animal Wastes in An Agroforestry System and Black Walnut Cultivar-Rootstock Evaluation

Authors
item Thomas, Andrew - UNIVERSITY OF MISSOURI
item Goggeshall, Mark - UNIVERSITY OF MISSOURI
item Sauer, Thomas
item Coblentz, Wayne - UNIV. OF ARKANSAS
item Brahana, Van - UNIV. OF ARKANSAS
item Skinner, Vaughn - UNIV. OF ARKANSAS
item Strigler, Keith - UNIV. OF ARKANSAS
item Hickie, Kevin - AR FORESTRY COMMISSION
item Robinson, Jim - USDA-NRCS
item Moffitt, Dave - USDA-NRCS

Submitted to: Meeting Abstract
Publication Type: Experiment Station
Publication Acceptance Date: December 18, 2001
Publication Date: N/A

Technical Abstract: Adoption of silvopastoral practices in the Ozark Highlands offers potential to not only increase forest production and sequester nutrients from animal wastes, but to do so while maintaining the grazing land base and diversifying farm operations. The objectives of this study are to demonstrate establishment and maintenance techniques for silvopastoral systems under Ozark Highland conditions. Three tree species (n. red oak, black walnut, and pecan) were planted in east-west rows spaced 50 ft. apart. One half of each tree block receives an annual application equivalent to 2 tons/acre of poultry litter. Ground cover in the paddock was converted to orchard grass to assess the viability of establishing this preferred forage species in silvopastoral settings. Tree and forage growth response and changes in soil and biomass nutrient pools are being monitored to assess nutrient (especially N and P) assimilation from applied poultry litter. Soil samples (0-6") will be taken in a random pattern within tree rows each year and analyzed for standard agronomic parameters. Four black walnut-rootstock graft combinations are also being evaluated for response to site conditions.

Last Modified: 9/23/2014
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