CROPS UNDER FALL IRRIGATION AT SC0TTSBLUFF. 



13 



Table VII. — Results obtained with sugar beets on fall-irrigated land (Series VI) and on 

 land not/all irrigated (Series VII) at the Scottsbluff Experiment Farm in 1912 and 

 1913. 



Year and plat. 



Yield per acre 



(tons). 



VI. 



VII. 



1912. 

 plat 3 



13.4 

 11,0 



12.3 







13 T 



Plat 8 



8 6 



Plat 13 



12 6 









12.2 







11 4 







1913. 

 Plat 9 



11.2 

 11.6 







8 3 



Plat 14. . 



9 5 









11.4 







8 9 









12.3 







10 7 









+ 



L.6 











POTATOES. 



The preparation of the land for potatoes was substantially the 

 same as that for the crops previously discussed. Early Ohio pota- 

 toes were used. The seed was planted in rows 42 inches apart, with 

 the hills 15 inches apart in the row. 



In 1911 the potatoes were planted during the second week in May. 

 The plants came up promptly on both series and made good growth 

 until July 3 . At this time a disease known as leaf-roll attacked them 

 and in less than two weeks the entire crop was destroyed, so that no 

 yields were secured in 1911. 



In 1912 the potatoes were planted during the second week in May. 

 At the time of planting, the surface soil contained an abundance of 

 moisture and an excellent stand was secured on both series. During 

 the growing season no important differences were apparent between 

 the two series. The crop was irrigated three times during the season. 



In 1913 the potatoes were planted on May 30. Good stands were 

 secured and no differences in the growth of the vines on the two series 

 were noted during the season. The plats in both series were irrigated 

 uniformly twice during the season. The numbers of the plats and 

 the yields per acre in 1912 and 1913 are stated in Table VIII. 



As shown in Table VIII, no important differences, either in the 

 individual yields or in the average yields, were obtained with pota- 

 toes. Considering the average results obtained during each of the 

 two years, the yields were slightly higher on the fall-irrigated land, 

 but the differences were insignificant. 



