10 



SUDAN GRASS. 



been cut as early as August 10 with a veiy slightly smaller yield. 

 The second growth on these two plats was over 3 feet high Avhen 

 killed by frost on November 4. 



The remaining 8 plats were harvested for seed on September 20 

 and yielded an average of 23 pounds each, or 4G0 pounds per acre. 

 Practically no seed was lost by shattering. The second growth in 

 these plats w^as about 1 foot high when killed by frost on November 4. 



A late seeding was made on August 7 in rows, and this was 48 

 inches high and fully headed when killed by frost on November 4. 



There can be no doubt that by seeding not later than June 1 two 

 full cuttings of Sudan grass for hay can be obtained each season in 



Fig. 4. — Sudan grass at Arlington Farm, Virginia, 1912. This is another view of the 

 right-hand row shown in figure 3. The tall plants in the background are hybrids be- 

 tween Sudan grass and some variety of sorghum. 



Virginia. The grass has shown much stronger growth in cultivated 

 rows than when broadcasted, but it still remains to be determined 

 which method is most desirable. 



The seed grown at Arlington Farm in 1912 weighed 36 pounds per 

 bushel. 



Mixtures of Sudan grass with cowpeas and with soy beans were 

 also tested (fig. o). A one-tenth acre j^lat was broadcasted on June 

 11 with 3 pounds of Early Black cowpeas and 2 pounds of Sudan 

 grass. This was cut for hay on September 6 Avhen the Sudan grass 

 was in bloom and the first pods of the cowpeas were fully grown. 

 The grass was 6 to 8 feet high and the cowpea vines were of about an 

 equal length. The plat yielded 925 pounds of cured hay, about one- 



[Cir. 12.';] 



