38 The Bulletin. 



First Year — Corn. 



Second Year — Crimson clover and soja beans. 

 Third Year — Wheat, r-ed clover. 

 Fourth Year — Red clover. 



A similar method of fertilization should be adopted with these 

 four-year rotations as is given for the three-year rotation. 



FIVE- OE SIX- YEAR EOTATION. 



Any of these rotations with two years of pasture added would 

 make them even better adapted to livestock farming. However, it is 

 improbable that this would often prove desirable in the Mountain 

 section, since there is usually sufficient land for pasture which is too 

 rolling for cultivation, making it necessary to keep the tillable land 

 continually under cultivation. 



CORN AND CRIMSON CLOVER. 



A good and practical method of soil improvement and the pro- 

 duction, at the same time, of profitable corn crops, is to grow a crop 

 of corn and crimson clover each year, using good fertilization on the 

 corn crop at first. Crimson clover is sown in corn at the last culti- 

 vation and turned under the latter part of April or early in May in 

 time to plant corn. A crop of crimson clover is obtained in 

 this way each year and very little difficulty is found in getting a 

 stand of crimson clover in the com. The productiveness of the land 

 can be rapidly increased with this cropping provided sufficient 

 amounts of phosphoric acid be applied. 



SOIL ANALYSES. 



Eleven years ago work was begun in mapping the soils of the 

 State. These m,aps, which are being made of the various counties, 

 show the location and extent of the different soil types. Between 25 

 and 30 per cent of the area of the State has been worked from which 

 a large number of soil samples have been collected and analyzed. 

 These analj^ses are brought together on the following pages. They 

 have been used in connection with this report and these and other 

 analyses will be used in our further investigations of the soils and 

 crops of the State. Tlie analyses show all the mountain soils to be 

 very high in potash, low in phosphoric acid and to contain a fair per- 

 centage of lime; the amount of nitrogen is variable, and depends on 

 the amount of organic matter in the soil. The field experiments 

 which have been made on these soils and presented, in part, in this 

 report, show that potash is not needed for the production of good 

 crops, but that phosphoric acid is the most important constituent. 



