Dec. 2. 1918 Effect of Farm .Manure on Irrigated Field Crops 503 



of sugar beets 2.6 tons per acre without materially affecting the sugar 

 content of the beets. 



In five of the seven rotations considered the increased yields were 

 from the crop immediately following the application of the manure. 

 In the other two rotations the yields Wicre from crops produced the second 

 season after the manure was applied. The increases in yield shown in 

 these two cases, as well as the effects observed with other crops grown 

 in these rotations, show that the benefit of the manure is appreciable for 

 two years or more after it was applied. 



