JOHNSON GRASS. 251 



but will yield much better crops where the rainfall is 

 normal. 



The most favorable conditions for growing Johnson 

 grass in the United States are found in North and 

 South Carolina, Georgia, Florida, Alabama, Tennes- 

 see, Mississippi, Louisiana, Arkansas, Oklahoma and 

 Texas. In Virginia, Kentucky, Tennessee, Missouri 

 and Kansas it has been grown with some success as far 

 north as the latitude of St. Louis or about 38 degrees 

 north. But there would seem to be no good reasons for 

 growing it in these states since they produce other forage 

 crops both numerously and abundantly. Above the 

 fortieth parallel the attempt should not be made to grow 

 it for economic uses. On the southwestern ranges the 

 conditions are too dry for growing it with much success, 

 nor is it a good pasture grass, viewed from the stand- 

 point of maintenance, under close grazing. Doubtless 

 it will grow well in the milder of the mountain val- 

 leys in the West and beyond the Cascades, but it would 

 certainly be a mistake to grow it in these, because of 

 the abundance of superior forage which may be grown 

 in them from plants that are easy of eradication. 



In Canada there is no place for this grass. The cli- 

 matic conditions are too cold. Any attempt to intro- 

 duce its growth into any of the provinces of Canada for 

 economic uses would be unwise. 



Soils. — Johnson grass will grow on a variety of soils, 

 but it will succeed best on loams rich and deep, since 

 its roots gather food from all parts of the soil down to 

 a considerable distance. It would probably be correct 

 to say that it will grow in good form on ground that 



