76 The Colorado Experiment Station. 
standard sorts is proof of what can be done on loamy lands with good 
subsoil, without irrigation, if properly rotated with alfalfa, beans and peas. 
Dryland Rotations.—If peas are used they should be planted in the 
earliest spring time in rows for cultivation and on packed fall plowing or 
summer tilled stubble. Two years of peas are recommended, the first 
season cutting for hay, and the second plowing under the crop and summer 
tilling for potatoes to follow in the third and fourth years, returning to 
grain for the fifth year and then repeating. By this means all dry land 
crops will be vastly increased, and the irrigated potato regions greatly 
benefited by an adequate seed supply. The irrigation given the Julesburg 
soil before plowing we do not consider superior to summer tilling. 
Varieties and Seed Sources.—We have much evidence here as else¬ 
where that those regions which buy Greely seed should buy if possible first 
year seed, and this is of added importance if the stock is again to be 
used for seed. The excellence of the sage brush mountain seed from Par- 
shall and Montrose and the Cobblers from Mancos is affirmed in the yield 
of Rural, Pearl and Cobblers, and the desirability of dry landers’ planting 
both early and late sorts is again illustrated. The Cobblers did fine and 
were beauties. We can only wish them equal in table quality to the 
Ohio. We do not favor for Julesburg any varieties but Rural, Pearl, 
Cobbler, and Ohio. We believe that this region with good knowledge of 
type and varieties and the facts of Bulletin 176 can maintain its seed 
stocks somewhat longer on its deep lands than can the Greeley district. 
COOPERATIVE DRY LAND TESTS AT JULESBURG 
Four Tableland Farm families* cooperated with us in tests of va¬ 
rieties for dryland growing, and gave most hearty and much appreciated 
PLATE XXIII. 
The Doublebeam Shaker Digger Handles Early Potatoes and Ripe 
Vines Very Well, and is Much Better than a Plow. Cost, $10.50 Chicago; 
$12.50, Denver. 
aid in this work. On land carefully cultivated but not summer tilled or 
failed plowed in any case nor that had grown peas, beans or alfalfa, it 
was proven in this bad season, that dry landers can grow as a minimum 
50 or 60 bushels or even more of potatoes. This year Pearls did by far 
*We say “families,” rather than “farmers,” because the women and 
young folks in the tableland farm homes take their full share of work 
and interest in these things. 
