12 Farmers' Bulletin 1126.

disadvantage, as the stems do not become so woody that they are refused by stock.

RATE OF SEEDING.

Rates of 10 to 40 pounds of seed to the acre have been tested at the different agricultural experiment stations. There was, however, no definite superiority indicated for any one of these rates in drilled seedings. Sudan grass tillers so profusely in thin stands that the final number of steins per square foot of ground is usually very nearly the same, whether the rate is 15 or 40 pounds. Taking all the factors

FIG. 7.—Sudan grass planted in rows 42 luches apart for seed production. Photo-

sraphed at Hays. Kans., September 9, 1915.

into consideration. 20 to 25 pounds per acre are recommended for drilled or broadcasted seedings in the humid regions and 12 to 15 pounds in the dry sections. Under irrigation. 15 to 20 pounds of seed are sufficient, owing to the more favorable conditions for germina- tion. These quantities should be proportionately increased if the seed is of low germination or the soil in poor physical condition. A grain drill set to sow 2 pecks of wheat to the acre will ordinarily sow about 20 to 25 pounds of Sudan grass seed. If it is desired to sow a less quantity, this can be accomplished by stopping alternate holes in