Sudan Grass. 11 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 stems per square foot of ground is usually very nearly the same, whether the rate is 15 or 40 pounds. Taking all the factors into consideration, 20 to 25 pounds per acre are recommended for drilled or broadcast seedings in the humid regions and 12 to 15 pounds in the dry sections. Under irrigation, 15 to 20 pounds of seed FIG. 7.—Sudan ;ras!á planted in rows 42 inches apart for wod production, I'hotograplied at Hays, Kans,, September 9, 1918.

are sufficient, owing to the more favorable conditions for germination. 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 the drill or by mixing the Sudan grass seed with bran or some other mill feed in any proportion necessary.

For seeding in cultivated rows 36 to 44 inches apart, 2 to 4 pounds of seed per acre will be found sufficient, while in rows 18 to 24 inches apart, 4 to 6 pounds per acre will be required, the smaller quantity being used, as in the broadcast seedings, for regions o 6 light rainfall. If the crop is intended for hay, enough seed should be used in any