CROPS UNDER FALL IRRIGATION AT SCOTTSBLUFF. 7 



panying the production of each bushel of grain during the three years 

 are given in Table III. The plat numbers were the same in each 

 series each year. In other words, where plats 5, 11, and 16 in Series 

 VI were fall irrigated, the corresponding plats in Series VII grew the 

 same crops and were otherwise treated in the same way, except 

 that they received no fall irrigation. In studying the table it is 

 necessary to keep this in mind and to remember that the figures in 

 columns headed "VI" relate to the fall-irrigated plats, while those 

 in the column headed "VII" relate to the plats which were not fall 

 irrigated. 



Table III.— Results obtained with wheat on fall-irrigated land (Series VI) and on land 

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

 1913. 









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 2 



Plat 7 



29 

 31 

 31 



28 

 29 

 28 



3,520 



3,220 

 3,020 



2,940 

 2,640 

 3,170 



31.1 

 31.3 

 32.1 



22.6 

 21.0 

 23.8 



113.2 

 102.8 

 94.1 



130.1 

 125.7 



Plat 12 



133. 2 







Average 



30 



28 



3,253 



2,916 



31.5 



22.4 



103.3 



130.2 



1912. 

 Plato 



40 

 42 

 40 



36 

 38 

 37 



3,910 



3, 080 

 2,720 



3,410 



2,250 

 3,760 



45.5 

 40.7 

 38.7 



46.9 

 35.9 

 32.4 



85.9 

 75.7 

 70.3 



72.7 



Plat 11 



62.9 



Plat 16 



116.0 







Average 



40 



37 



3,236 



3,140 



41.6 



38.4 



77.8 



81.8 



1913. 

 Plat 3 



36 

 39 



37 

 38 



1,640 

 1,750 



1,200 

 2,060 



26 3 



27.5 



20.6 

 25.0 



62.4 

 63.6 



58.2 



PlatS 



82.4 







Average 



37 



37 



1,695 



1,630 



26.9 



22.8 



63.0 



71.5 



Average results, three 



35.8 



34.1 



2,728 



2,562 



33.3 



27.8 



81.9 



92.1 







Difference in favor of 

 fall irrigation 



+ 1.7 



+ 166 



+< 



5.5 



-10.2 



Table III shows that the average results obtained with wheat during 

 each of the three years favored fall irrigation. There were several 

 individual instances in which the results did not agree with the average 

 results, but the inconsistencies were in all cases relatively small. Con- 

 sidering the average results during each of the three years, the wheat 

 on fall-irrigated land grew taller and produced heavier yields of straw 

 and of grain and a lower proportion of straw to grain than the wheat 

 on land which was not fall irrigated. Considering the average results 

 of the 3-year period, the wheat on the fall-irrigated land grew 1.7 

 inches taller, produced 166 pounds more of straw, 5.5 bushels more of 

 grain per acre, and 10.2 pounds less straw per bushel of grain than the 

 wheat on the land which was not fall irrigated. 



