530 FOE AGE PLANTS AND THEIR CULTURE 



proportion of soybeans. One bushel of soybeans to one- 

 half bushel of cowpeas gives excellent results if broad- 

 casted, but half this quantity is sufficient if planted in 

 three-foot rows. The time for cutting for hay is deter- 

 mined primarily by the soybeans, as cowpeas can be cut 

 for hay over a much longer period than the soybeans. 



Soybeans and sorghums. Soybeans may be grown 

 very satisfactorily for hay or silage in a mixture with 

 sorghum. The tall-growing vining varieties are best, 

 and either Amber or Orange sorghum may be used. This 

 mixture is most satisfactory in cultivated rows, as the 

 sorghum is apt to choke out the soybeans when broad- 

 casted, unless the sorghum is planted thinly. 



Soybeans and Johnson-grass. Johnson-grass as well as 

 Sudan-grass is excellent for growing in mixtures with 

 soybeans. Not only are better yields obtained with these 

 mixtures but also the quality of the hay is improved. 

 Twining varieties of soybeans have a distinct advantage 

 for growing with these grasses. 



Soybeans and millet. Soybeans and millet are not 

 to be recommended as a mixture. The millet matures 

 too early for any of the good hay varieties of soybeans. 



645. Silage. Soybeans may be very satisfactorily 

 used for silage, the best results being obtained when 

 mixed with corn or sorghum. The soybeans may be 

 grown either in combination with the corn or the sorghum, 

 but it seems preferable to grow them separately and to 

 mix them while cutting for the silo. 



646. Rotations. In the South soybeans are adapted 

 to practically the same place in rotations as are cowpeas. 

 In Tennessee and North Carolina, a soybean crop is often 

 grown between two wheat crops, and in other parts of 

 the South, between two oat crops. In such cases medium 



