WINTER-WHEAT PRODUCTION AT FORT HAYS STATION, 15 
While this discussion is confined to winter wheat, the data would be 
incomplete if the yields of the other crops in the rotations were 
omitted entirely. For convenience of reference, the average yields 
of the several crops in these rotations are shown in Table 6. 
TABLE 6.—Average yields of corn, kafir, barley,« and winter wheat in 4-year rotations 
at the Fort Hays branch station for the 14-year period from 1907 to 1920, inclusive. 
Yields per acre for the several rotations (bushels). 
Item. 51, corn, | 92, corn, | 55, Kafir, | 56, kafir, | 57, corn, | 53, rye,® | 54, peas, 
barley, | barley, | barley, | barley, | barley, | barley, | barley, 
Tye,0 peas,® rye,6 peas,® fallow, corn, corn, 
wheat. | wheat. | wheat. | wheat. | wheat. | wheat. | wheat. 
powcr | 2 Lt | epee | | ee 
Corn 
Gram i Fes! bushels. . so Teewart AIG ks Se 6.6 4.9 5.4 
SLOVED Se eee aoe pounds 2,514 2, AIRE Rees oe Ne ones oe 2,361 2,315 2,417 
Graia= 6a esc. Dushelses| Pies. 2.1 Se ee 18.3 vt esa Seen ee (8 ata os oe ga Sen 8 
SLOVERc Ae tet 3% pounds S27 & . 2i/.. 33S 4,648 ASGOSH 28S SoG yee eth Sk ee eee 
Barleve 22-2522 ~ pss. bushels... 16.1 19. 4 17.5 19 19.6 21.6 20. 4 
Capes aa. Sone SIeE ACES fe) 13.4 14.9 16.5 15.5 19 14.0 16. 2 
@ Barley is for the 13-year period from 1908 to 1920, inclusive. © Plowed under for green manure. 
Corn following winter wheat the second year after rye used as 
green manure in rotation No. 51 has a 14-year average yield of 5.5 
bushels of grain and 2,514 pounds of stover per acre. Corn on 
similar preparation after peas used as green manure in rotation No. 
92 has averaged 7.5 bushels of grain and 2,410 pounds of stover per 
acre. In the similar rotation containing fallow instead of green 
manure, No. 57, corn has averaged 6.6 bushels of grain and 2,361 
pounds of stover. Barley following the corn in these same rotations 
has averaged for the 13 years from 1908 to 1920, inclusive, 16.1 
bushels in rotation No. 51, 19.4 bushels in rotation No. 92, and 19.6 
bushels in rotation No. 57. It has been shown that the yield of 
wheat immediately following the green manure or fallow was 13.4 
bushels after rye in rotation No. 51, 14.9 bushels after peas in rota- 
tion No. 92, and 19 bushels after fallow in rotation No. 57. When all 
three crops are considered the rye for green manure in rotation No. 
51 shows to distinct disadvantage in comparison with peas or fallow. 
Between the other two rotations no choice is to be made from the 
behavior of the corn and barley, but for winter wheat the fallow 
rotation shows a distinct advantage over the one containing peas. 
Rotation No. 53, rye for green manure, barley, corn, and winter 
wheat, has made average yields of corn, 4.9 bushels; barley, 21.6 
bushels; and wheat, 14 bushels per acre. Rotation No. 54 is the 
same, with peas instead of rye for green manure. The average yields 
from it are corn, 5.4 bushels; barley, 20.4 bushels; and wheat, 16.2 
bushels. Comparing the two rotations the higher yields of wheat 
and corn have been from the pea rotation and the higher yield of 
