Abstract
Spring barley (Hordeum vulgare L.) grown annually in a high-residue management system has been favorably viewed as a means of reducing soil erosion without compromising income from traditional winter wheat (Triticum aestivum L.)/fallow rotations in the northwestern USA. Rhizoctonia root rot (R. solani Kuhn), however, is more severe on barley than on wheat, especially in nontilled soil. Constraints of this disease to spring barley production without tillage are not known. The objective of this study was to determine effects of tillage history on diseases, growth, and yield of spring barley in semi-arid eastern Oregon. Spring barley was produced at two locations under a moldboard plow-based system, a no-till system, or various sequences of tillage alternated with no-till [...]
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