North Dakota State University * Dickinson Research Extension Center
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New Intermediate Wheatgrass Plots

The 1960 yields of hay from the new intermediate wheatgrass trial seeded in 1958 are given in Table 3. The data of the table shows that the stands have some weeds in them with South Dakota #20 and A-12496 showing appreciable amounts of weed growth. There has been little or no deterioration of stands as yet, as evidenced by the general lack of invading crested wheatgrass. The range in yields of seeded grass was from 1317 pounds per acre for Amur, to 1999 pounds per acre for Idaho #3. Idaho #3 appeared to have substantially better production than the other varieties in the 1960 season.

The two-year average yields (1959-1960) are given in Table 4. On the basis of the two-year average yields, Idaho #3 and South Dakota #20 would appear to be somewhat more productive than the other strains in this trial. Amur appears to be somewhat less productive than the other strains, and the stands of this variety appear in the field to be less vigorous than the stands of the other varieties. A-12496 initially showed relatively poor stands, but the stands of this strain have thickened-up, and the variety made fairly good growth in the 1960 season. The general vigor and good hay production of young stands of intermediate wheatgrass is evidenced by the over-all average plot yield of 1384 pounds per acre for the two years of the trial.

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