CROP ROTATION 317 



Oats. Best results when sands are improved. 



Barley. Sands are poor barley soils. 



Grass and Pasture. Sands poorly suited to grass or pasture. 



Brome Grass. Gives promise for good pasturage on sands. 



Buckwheat. Well adapted to sands. 



Cotton. Cotton grows best on richer soils. 



Sugar Beets. Sands are not adapted for the growing of 

 this crop. 



Crop Rotation. Short rotations are best for sands. In planning 

 the rotations, legumes, catch-crops and green-manuring crops 

 should be given special consideration; and no grain or cultivated 

 crop should be grown twice in succession. Moreover, rotations 

 must necessarily change to fit the stages of development. 



In beginning sand improvement the following rotations 

 are successful : 



A 1. Soybeans to plow under (sown on land having had fall 

 rye plowed under). 2. Soybeans for seed or hay (rye sown in the 

 fall). 3. Rye (seeded with mammoth clover or vetch which is 

 plowed under). The clover may be left for hay, and the hay fol- 

 lowed by soybeans for seed or hay. 



B 1. Soybeans or cowpeas (to plow under or for seed, depend- 

 ing on the soil). 2. Corn or potatoes (fall sown rye or vetch for 

 cover crop). 



C 1. Soybeans for seed or hay (fall rye). 2. Rye (soybeans 

 sown immediately after harvest). 



The following are typical rotations when a definite system of 

 farming has been established : 



D 1. Corn (soybeans planted with cron; fall rye). 2. Rye 

 (seeded with mammoth clover). 3. Clover (second growth 

 plowed under). 



This may be made a four-year rotation by growing soybeans 

 after corn. Soybeans may be grown the third year instead 

 of clover. 



E 1. Corn (fall rye seeded in corn at last cultivation). 2. 

 Rye (soybeans sown immediately after harvest, and plowed under 

 in fall). 3. Mammoth clover, seed without nurse crop. 4. Clover 

 for hay. Fifth year may be pasture. 



F 1. Clover. 2. Corn (rye sown in corn at last cultivation, 

 and plowed under in the spring). 3. Potatoes (rye sown in fall 

 and clover seeded in the spring). 4. Rye. 



G 1. Vetch and rye (volunteer vetch plowed under for 



