12 



BULLETIN 1039, U. S. DEPARTMENT OF A(;rI('ULTUEE. 



plats of standard varieties of each cereal were sown at regular inter- 

 vals in 1909 and 1910, and in most of the experiments in 1908. As 

 this method did not appear to be entirely satisfactory, a change was 

 made in 1911 in some of the experiments and in all those conducted 

 from 1912 to 1919. The size of the plats was reduced, as stated in 

 the preceding paragraph, and the experiments were replicated. In 

 the varietal experiments, three to five plats of each variety were 

 grown. In rate-of-seecling and date-of-seeding experiments it has 

 been considered sufficient to grow three plats of each rate or date, 

 as there is a correlation between the different parts of the experiment 

 which is not found in the varietal experiments. Some of the date- 

 of-seeding experiments were sown only in duplicate. 



RATES AND DATES OF SEEDING. 



The usual rates of seeding of the grains in the varietal and date-of- 

 seeding experiments on both dry and irrigated land are shown in 

 Table VI. 



Table VI. — Rates of seeding of the grainH in rarirtal and date-of-seeding 

 experiments on dry and on irrigated land on the Belle Fonrche Experiment 

 Farm. 



Crop. 



Rate of seeding per 

 acre. 



Crop. 



Rate of seeding per 

 acre. 



Dry 

 land. 



Irrigated 

 land. 



Dry 

 land. 



Irrigated 

 land. 



Winter wheat pecks. . 



Spring wheat do 



Winter rye do 



Oats -do 



3 

 4 

 4 

 6 



4 

 5 

 5 

 10 



Barley pecks.. 



Flax pounds.. 



Eroso do 



5 

 22.5 

 22,5 



6 

 30 

 30 



Spring grains have been sown as early as seemed practicable. 

 During wet spring weather the seeding has sometimes been con- 

 siderably delayed. In a few seasons some of the grains have been 

 sown in March, but usually the spring grains were sown between 

 April 1 and May 10. Winter grains Avere usually sown between 

 September 15 and October 1, which appeared to be the most favor- 

 able time for fall sowing. 



NURSERY EXPERIMENTS. 



NATURE OF THE WORK. 



The nursery experiments at Newell have included varieties newly 

 introduced, those of which there was not sufficient seed for sowing in 

 the field plats, and also pure-line selections from the better commercial 



