60 A YEAR IN AGRICULTURE 



the plant-food made available by weathering during the fall, 

 winter, and spring. 



4. Distribution of labor. The farmer who has a well 

 planned system of rotation is able to make better and more 

 continuous use of his own time and of the labor of his men 

 and teams. 



Corn in systems of rotation. Eotation of crops will not 

 in any sense add to the fertility of the soil, unless in the rota- 

 tion a legume crop be returned to the soil, and then nitrogen 

 only is added. In connection with the following rotations, 

 discussion will be made later as to the place of mineral plant- 

 foods in keeping up soil fertility. 



For a system of rotation in live-stock farming, the follow- 

 lowing scheme is advised: 



(1) Wheat, (2) corn, (3) oats, (4) clover, and (5) one- 

 fifth the land in alfalfa to be turned into the rotation after 

 five years, and another one-fifth seeded to alfalfa. Sell all 

 grains, seed, and alfalfa hay, and return the rest to the soil, 

 using limestone and rock phosphate, as will be explained 

 later. 



For a system of rotation in live-stock farming, the follow- 

 ing is recommended: 



(1) Corn, (2) corn, (3) oats, (4) clover, and (5) alfalfa 

 as before. Feed all the crops and return the manure to the 

 soil, using limestone and rock phosphate. 



VL FERTILIZING CORN GROUND 



Corn not a poor land crop. It needs to be repeated again 

 and again that corn can not be profitably raised on poor 



