CROPS UNDER FALL IRRIGATION AT SCOTTSBLTJFF. 



9 



Table IV. — Results obtained with barley onfall-irrigated land (Series VI) and on land 

 not fall irrigated (Series VII) at the Scottsbluff Experiment Farm in 1911, 1912, and 

 1913. 





Height (inches). 



Yield per acre. 



Pounds of straw per 



Year and plat. 



Straw (pounds). 



Grain (bushels). 



bushel of grain. 





VI. 



VII. 



VI. 



VII. 



VI. 



VII. 



VI. 



VII. 



1911. 

 Plat 3 



29 

 31 

 31 



25 

 26 

 25 



2,640 

 2,335 

 2,745 



2,700 

 3,060 

 3,080 



40.4 

 34.8 

 37.6 



24.5 

 30.0 

 29.5 



65.7 

 67.1 

 73.0 



110.2 



Plat 8 



102.0 



Plat 15 



104.4 







Average 



30 



25 



2,573 



2,936 



37.6 



28.0 



68.4 



104.9 



1912. 

 Plat 4 



36 

 37 

 37 



36 

 34 

 36 



970 

 1,640 

 2,150 



870 



790 



1,400 



37.1 

 43.3 



48.1 



33.9 

 32.5 

 38.6 



26.1 

 37.9 



44.7 



25.7 



Plat 9... 



24.3 



Plat 14 



36.3 









37 



36 



1, 586 



1,020 



42.8 



35.0 



37.1 



29.1 



1913. 

 Plat 1 



30 

 32 



32 

 32 



1,340 

 1,720 



1,380 

 1,430 



29.1 

 31.8 



27.0 

 26.8 



46.0 

 54.1 



51.1 



Plat 16 



53.4 







Average 



31 



32 



1,530 



1,405 



30.4 



26.9 



50.3 



52.2 



Average results, three 



32.5 



30.7 



1,896 



1,787 



36.9 



29.9 



51.4 



59.8 







Difference in favor of 

 fall irrigation 



+1 



.8 



+ 109 



+7.0 



-8.4 



Table IV shows that the average yields obtained with baleey during 

 each of the three years were in favor of fall irrigation, and the same 

 was true with all but one of the individual grain yields obtained. 

 Barley on fall-irrigated land produced higher average yields of straw 

 per acre each year, except 1911. In 1911 and 1912 the barley grew 

 somewhat taller on the fall-irrigated land, but in 1913 the height of 

 the matured grain was slightly greater on the land which was not fall 

 irrigated. The average proportion of straw to grain was lower on the 

 fall-irrigated land in 1911 and 1913 and higher in 1912. Considering 

 the average results of the 3-year period, the barley on fall-irrigated 

 land was 1.8 inches taller than that on land not fall irrigated, and it 

 produced 109 pounds more of straw and 7 bushels more of grain per 

 acre and 8.4 pounds less of straw per bushel of grain. 



The soil treatment and fall irrigation applied to the plats producing 

 oats were the same as those applied to the plats producing wheat and 

 barley during the 3-year period. A variety of oats known as "New 

 Market" was used each year, and the seed was planted at the rate of 

 10 pecks per acre. 



In 1911 the condition of the soil at planting time, April 20, was the 

 same on the oats plats as on the barley plats, and the seed on both 



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