place causes a small per cent of the phosphorus in the raw rock to 

 become available the following year. 



Crimson Clover 



Crimson clover is becoming a favorite in some of the eastern and 

 southern states. While it is regarded as a cool weather plant, it will 

 hardly stand the cold winters of the north. It is often planted as a 

 catch crop after grains, but like other clovers, it requires a good seed- 

 bed, plenty of humus and plant food, especially phosphoric acid and 

 potash. This variety excels all others for grazing purposes for the 

 reason that it remains green very late in the fall and starts to grow in 

 the spring very early. It makes a splendid fertilizing crop if sown 

 between the rows of corn after the last cultivation. 



Alsike 



This variety is more hardy than any of the others mentioned. It 

 rarely winter-kills even in the extreme north. Alsike does not stand 

 up well, but is inclined to creep, hence it is better to plant with some 

 other plant that does stand up well such as timothy or some of the 

 grains. It does much better on low wet lands than other varieties 

 but not so well on uplands. Alsike seeds are about one-half the size 

 of the other varieties, hence it requires only about ten pounds to sow 

 an acre. 



Burr Clover 



Burr clover is grown in the south very extensively as a fertilizer 

 and soil improver. It is said to be superior to any of the legumes as a 

 nitrogen-fixing plant. The burr-like seeds carry with them the bacteria 

 for the inoculation of the soil and it is believed that the bacteria are 

 identical with those belonging to alfalfa. This variety does not do 

 well in the north. In a medium latitude, however, it can be sown on 

 land intended for alfalfa and is very beneficial on account of its ability 

 to inoculate the soil. 



Lespedeza 



Lespedeza or Japanese clover is a legume which was introduced into 

 the United States from Asia a few years before the Civil War. It is 

 not a northern clover, but is grown very successfully south of an imagi- 

 nary line from New Jersey to southern Kansas. 



Lespedeza is a summer annual, requiring from early in the spring until 

 September to mature. As a dry stock feed, it is equal to alfalfa and 

 for a pasture, when mixed with Bermuda grass or red top, it has no 

 superior. As a hog pasture it is more enduring and more nutritious 

 than either the cow pea or vetch. When mixed with other grasses for 

 either pasture or hay, it necessarily dies in winter but seeds itself, 

 coming up early in the spring. 



