UNIVERSITY OF CALIFORNIA AGRICULTURAL EXPERIMENT STATION 



BENJ. IDC WHEELER, PRESIDENT 



COLLEGE OF AGRICULTURE THOMAg FORSYTH HUNT DEAN AND D|RECTOR 



BERKELEY H - E - VAN NORMAN, VICE-DIRECTOR AND DEAN 



UNIVERSITY FARM SCHOOL 



CIRCULAR No. 189 



JANUARY, 1918 



WINTER FORAGE CROPS 



BY P. B. KENNEDY 



The crops that may be grown in this state during the winter season 

 for forage purposes are: 



Canada field peas Bur-clover 



Common vetch Sweet clover 



Sand or hairy vetch Italian rye grass 



Horse beans English rye grass 



Rape Orchard grass 



Kale Crested dog 's-tail grass 



Giant marrow cabbage Tall meadow oat grass 



White mustard Rye 



Root crops Barley 



FIELD PEAS 



Field peas are adapted to moderate temperatures and will with- 

 stand frost, but not severe freezing weather. They will also grow 

 at high altitudes. Where the winters are cold they must be sown 

 in spring under irrigation or on land that has previously been pre- 

 pared so as to conserve the moisture. On the coast and in the interior 

 valleys, fall sowing on well-drained land is recommended. The crop 

 may be grown for hay, soiling, silage, pasture or seed. It is palatable 

 to all classes of stock in any of its forms. 



The soil should contain an abundance of lime and where this is 

 not present naturally, 1000 to 2000 pounds of burned lime or double 

 this quantity of ground limestone per acre should be applied. 



There are about 100 varieties of field peas, differing in earliness, 

 amount of herbage and the size and color of the flowers and pods. 

 The seeds of some varieties are round and smooth while others are 

 wrinkled and angular. In color they vary from light yellow to 

 green, brown, black or speckled. Some of the best varieties are Colo- 

 rado White, Black-eye Marrowfat, Arthur, Golden Vine, Prussian 

 Blue. The weight of a bushel of peas varies from fifty-two to sixty- 

 eight pounds, depending upon the variety and the quality of the seed. 

 The seed will germinate well, even when several years old. In some 



