CEOPS UNDER FALL IRRIGATION AT SCOTTSBLUEF. 11 



As shown in Table V, the individual yields of oats were in most 

 cases higher on the fall-irrigated land, and the same was true with 

 respect to the individual yields of straw. In 1911 the proportion of 

 straw to grain was uniformly lower on fall-irrigated land than on land 

 not fall irrigated, while the reverse was true in 1912 and 1913. Con- 

 sidering the average results of each year, the oats on the fall-irrigated 

 land were taller in 1911 and 1913 and the same height in 1912; the 

 average yield of straw per acre was higher on the fall-irrigated land 

 in each of the three years, and the same is true with respect to the 

 average yield of grain. Considering the average results of the 3-year 

 period, oats on fall-irrigated land grew 1.1 inches taller, produced 135 

 pounds per acre more of straw, 11 bushels more of grain, and 4.8 

 pounds less of straw per bushel than oats on land not fall irrigated. 



CORN. 



Corn was included in this experiment in 1912 and 1913 only. The 

 preparation of the land and the fall irrigation were the same as with 

 the crops previously discussed. A local variety known as Calico corn 

 was used. The seed was planted in rows 40 inches apart and the 

 plants were thinned to 20 inches apart within the row. 



In 1912 the corn was planted in both series on May 8. The crop 

 was irrigated once during the season of 1912. No differences were 

 noted as to the stage of maturity reached by the corn on the two 

 series during the year. The crop was harvested on September 15, at 

 which time the grain on all the plats was about 85 per cent matured. 



In 1913 the corn was planted on May 19. During the period from 

 July 7 to 12 severe hot winds prevailed and damaged the corn on 

 both series to some extent. No differences were noted between the 

 plats on the two series as to the damage done by the hot winds. The 

 crop was irrigated once during the season. No differences were 

 noted as to the stage of maturity reached before frost. The corn 

 in both series wa^'harvested on September 18, at which time it was 

 practically all matured. 



The numbers of the plats and the yields per acre of stover and of 

 grain during the years 1912 and 1913 are given in Table VI. 



Table VI shows that with one exception the individual grain yields 

 of corn were higher each year on the fall-irrigated land. Considering 

 the averages obtained in each of the two years, the yields of stover 

 and of grain were higher on fall-irrigated land than on land not fall 

 irrigated, and the proportion of stover to grain was lower on the fall- 

 irrigated land. Considering the average results of the two years, 

 the corn on fall-irrigated land produced 490 pounds per acre more of 

 stover, 10.6 bushels per acre more of grain, and 5.4 pounds less of 

 stover per bushel of grain than the corn on land which was not fall 

 irrigated. 



