CEREAL EXPEEIMEN^TS OiST THE CHEYENNE EXPERIMENT FARM. 35 

 RATE-OF-SEEDING EXPERIMENT. 



Russian flax (C. I. No. 19) was grown at the Cheyenne Experiment 

 Farm in a rate-of-seeding experiment during 1914 and 1915. Plats 

 were sown each year at the rate of 10, 15, 20, and 25 pounds per acre. 

 The annual and average yields obtained in this test are shown in 

 Table XXV. 



Table XXV. — -Annual and average yields of Russian flax (N. Dak. No. 155) grown in 

 a rate-of-seeding test on the Cheyenne Experiment Farm in 1914 and 1915. 



Rate of seeding. 



10 pounds 

 15 pounds 

 20 pounds 

 2o pounds 



Yield per acre. 



Grain. Straw 



Buslieh. 

 4.3 

 4.7 

 6.0 

 4.5 



Pounds. 

 640 

 675 

 545 

 580 



Grain. Straw 



Bushels. 

 14.9 

 17.1 

 14.9 

 14.2 



Pounds. 

 1,380 

 1,310 

 1,280 



;,200 



2-year average. 



Grain. Straw 



Bushels. 



9.6 

 10.9 

 10.4 



9.3 



Pounds. 

 1,010 

 992 

 912 



Low yields were obtained in 1914, due to summer drought. The 

 highest yield was 6 bushels per acre, obtained from the 20-pound rate 

 of seeding. Fallow land was used in this test in 1914. 



In 1915 the sowings were made in duplicate twentieth-acre plats on 

 double-disked corn gromid. The summer was cool and wet and the 

 yields were high. The highest yield was obtained from the plat sown 

 at the rate of 15 pounds per acre. 



TSvo years' results in the rate-of seeding test indicate that 15 to 20 

 pomids per acre is about the right quantity to sow. 



DATE-OF-SEEDING EXPERIMENT. 



A date-of-seeding experiment with flax has been in progress at the 

 Cheyenne Experiment Farm for three years. In 1913, tenth-acre 

 plats were sown on three different dates, May 1, May 15, and June 1. 

 The highest yield was 7 bushels, obtained from the plat sown on June 

 1. In 1914, tenth-acre plats were sown on four dates, as shown in 

 Tabl(! XXVI. The highest yield was 5.4 bushels, obtained from the 

 Jmie 1 sowing. In 1915, duplicate twentieth-acre plats were sown 

 on four dates. The high(!st yi(d(l resulted from the sowing mad(i on 

 June 1. The land on which tliis e.vp(!riment has been conducted 

 received the same preparation as that on which the varieties were 

 grown. The annual and averag(; yields obtained are shown in Table 

 XXVI. 



There has been a progressive increase in yield from the early to the 

 late; seijdings each year. The soil is rath(!r late hi warmhig up at 

 Arch(!r, and the (^arly sowings hav(^ grown more slowly and r(>(iuired 

 a longer p(!riod to reach maturity than the plats sown as lat(^ as June 1 . 

 However, the early sowhigsniatur-e more unifonnly than the lateonc^s. 



