Tuesday, 8 November 2005
12

Appropriate Seeding Rates for Mid-Atlantic Hulless Barley.

W.E. Thomason, W.S. Brooks, M.E. Vaughn, and C.A. Griffey. Virginia Tech, CSES Department, 422 Smyth Hall, Blacksburg, VA 24061

Hulless barley has been shown to deliver higher quality feed than traditional barley, however because of the exposed germ, hulless barley grown for seed does not tolerate handling as well as traditional types which may result in problems with germination and emergence. Similarly, little is currently known about the seeding rates necessary to achieve the number of plants per unit area needed for new hulless lines to achieve optimum yields. The objective of this study was to evaluate seeding rate effects on grain yields and yield components of new hulled and hulless barley varieties. Trials were conducted at two diverse locations in Virginia having different soil types and growing conditions. Seeding rates were in six equal increments of 323, 430, 538, 646, 753, and 861 seeds m-2 for three hulled and six hulless cultivars. Plants m-2, spikes m-2, and grain yield were different for hulled and hulless lines at similar seeding rates. Initial results indicate that for hulless lines, plants m-2 increased with seeding rate up to 753 seeds m-2; however grain yields did not increase with seeding rates greater than 538 seeds m-2.

Handout (.pdf format, 1504.0 kb)

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