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Intermediate-Pubescent Wheatgrass Plots

The 1960 hay yields from the intermediate-pubescent plots seeded in 1954 are given in Table 1. Table 2 gives the average yields of the varieties in this trial over the 6-year period, 1955-1960. The 1960 yields given in Table 1 show the composition of the yields in terms of seeded grass, other grass, and weeds. It is apparent that there has been considerable deterioration in stand with nearly all the varieties. This is shown by the relatively high proportions of "other grass" in the stands, especially in the stands of North Dakota pubescent and A-14296. Most of this deterioration of stand has taken place since 1958. The "other grass" in the plots is invading crested wheatgrass. Weeds were not important in the 1960 season.

Table 1. Composition of 1960 Yields from Intermediate-Pubescent Wheat-Grass Plots Seeded in 1954.

Composition of Yield

Variety Grass Other Grass Weeds Total Plot production - Lbs/Acre
M-2-10820 1456 142 38 1636
N. Dak. Pubescent 1020 585 --- 1605
Ree Wheatgrass 1333 164 16 1513
N. Dak. Intermediate 1250 179 2 1431
Pubescent Wheatgrass 1325 97 --- 1422
Nebraska 50 Intermed. 1210 93 17 1320
A-12496 1045 250 11 1306
Average 1234 216 12 1462

The data of Table 1 show that in the relatively favorable 1960 season M-2-10820, Ree Wheatgrass, and Pubescent Wheatgrass produced the best yields. However, most of the plot yields were fairly close together, with only N. Dak. Pubescent and A-12496 distinctly lower than the other varieties in production of seeded grass. The average plot yield of 1462 pounds per acre for all varieties was about the same as last year's average production of 1439 pounds per acre.

On the basis of the average plot yields for the period of the trial (Table 2), the intermediate wheatgrass strains seem to be slightly more productive than the pubescent wheatgrass strains. All varieties have averaged over 3/4 ton of hay for the 6-year period, with Ree wheatgrass having an average production of over one ton per acre for the period.

Table 2. Hay Yields from Intermediate-Pubescent Wheatgrass Yield Plots Seeded in 1954.

Oven-dry weight - lbs./acre

Variety 1955 1956 1957 1958 1959 1960 6-Year Average Yield
Ree Wheatgrass 3419 1484 2332 1815 1511 1513 2012
M-2-10820 2724 1329 2290 2006 1435 1636 1903
Nebraska 50 3299 1296 2200 1879 1348 1320 1890
N. Dak. Intermediate 2839 1385 2214 1735 1490 1431 1849
Pubescent Whtgr. 3131 1355 1979 1494 1481 1422 1810
N. Dak. Pubescent 2580 1308 1905 1794 1580 1605 1795
A-12496 2647 1409 2017 1449 1231 1306 1676
Average 2948 1367 2134 1739 1439 1462 18480

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