ROTATION AND CULTURAL METHODS AT EDGELEY, N. DAK. 5 
The growing season of 1914 was generally favorable for crops, but 
yields were reduced by drought, rust, and hail in the period immedi- 
ately preceding harvest. 
The year 1915 was exceptionally favorable. The spring was dry, 
but at no time after the 1st of May was there any suffering from lack 
of moisture. There was some lodging and rust in wheat and oats, but 
yields were higher than in any other year in the record. Corn eared 
well but did not mature. 
Low yields of poor quality of small grains characterized 1916, but 
the yields of all forage crops were exceptionally high. At no time was 
there a lack of water. The prospects for all crops were of the best 
until July, when rust developed with warm humid weather. Many 
fields in the vicinity were not harvested. 
The driest year yet recorded at Edgeley was 1917. As a conse- 
quence, the yields of all crops were comparatively low. The hay crop 
was especially short. 
The comparatively low yields of 1918 were due to drought. There 
was a decided response on fallow and corn ground, but the yields were 
low where small grain followed small grain. 
In 1919 there was some damage from drought, but rust was chiefly 
responsible for the low yields recorded. 
The 14-year average yield of wheat with all methods in use was 
17.2 bushels per acre. Maximum yields of over 34 bushels per acre 
have been recorded with all rotations and methods used except con- 
tinuous cropping with fall plowing, which has attained a maximum 
of 29.5 bushels. The highest yield of wheat recorded in the 14 
years was 41.9 bushels in 1915 from wheat on rye turned under for 
green manure. 
The average yield of oats was 34 bushels per acre. With all rotations 
and methods maximum yields of 60 bushels or more have been pro- 
duced. Three yields of over 100 bushels were obtained on fallow 
in 1915. The highest yield recorded was 106.9 bushels on fallow in 
rotation No. 19. 
The average yield of barley was 20.3 bushels. With all rotations 
and methods maximums of over 32 bushels per acre have been 
reached. The highest yield of barley recorded was 50.8 bushels, in 
1915, on spring-plowed oat ground in rotation No. 7. 
The highest yields in every rotation were made in 1906, 1912, or 
1915, with by far the most of them in 1915. 
Expressed in pounds per acre, the average yield of wheat has been 
1,032, oats 1,088, and barley 974. The absolute maximum yields 
recorded are : Wheat, 2,514 pounds ; oats, 3,420 pounds ; and barley, 
2,438 pounds. In 1915, when the greater number of the rotations 
made their highest yields, the averages were : Wheat, 2,160 pounds ; 
oats, 2,550 pounds; and barley, 1,992 pounds. 
