ABSTRACT:
Management of crop residues to minimize wind erosion damage is essential for small grain production in the Alaskan subarctic. Research on straw management and tillage practices has indicated the need for an efficient method to evaluate crop residue cover. The line-intersect technique of ground cover evaluation was used to determine the effects of straw management and tillage practices on barley production during two seasons. In 1985, measurements were taken by one team of two experienced observers. Three teams of paired experienced and inexperienced observers were employed in 1986. Significant differences between residue management techniques were found in both years. No significant differences were found between chiseled and disked treatments. Differences between experienced and inexperienced observers were apparent.
Footnotes
B. J. Pierson is a research associate in soils, C. E. Lewis is an associate professor of resource management, and C. A. Birklid is a research assistant, Agricultural and Forestry Experiment Station, University of Alaska, Fairbanks, 99775. This paper is a contribution from the Agricultural and Forestry Experiment Station, University of Alaska. The assistance and cooperation of volunteers from the staff at the Agricultural and Forestry Experiment Station was instrument in data collection. The authors also thank Dana Thomas, Department of Mathematics, University of Alaska, Fairbanks, for statistical assistance.
- Copyright 1988 by the Soil and Water Conservation Society
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