WHEAT 115 



an increased yield of the legume, but a greater 

 storage of plant food in the roots of the legume 

 crop, due to the increased growth, and this 

 increase in the fertility of the soil will be available 

 to the crop which follows the legume. 



HOW TO USE MANURE 



Manure should not be applied in too heavy 

 applications, a light dressing of eight tons of 

 manure per acre over forty acres will give a 

 greater relative increase in the crop and greater 

 value to the manure than a heavier dressing of 

 sixteen tons per acre over twenty acres leaving the 

 remaining twenty acres unmanured. Actual 

 experiments on a small scale have proven this 

 statement. Also in plowing under a heavy dress- 

 ing of manure there is danger that the manure, by 

 breaking the capillary connection of the soil 

 with the subsoil may cause the crop to "burn 

 out" in a dry season. For the same reason it is 

 not advisable to plow under trashy or coarse 

 manure. 



An experiment in manuring in wheat rotations 

 carried on for twenty years at the North Dakota 

 experiment station demonstrates the cumulative 

 effect of manuring. Only six loads of well rotted 

 manure was applied per acre to the corn or millet 

 in a four year rotation with wheat. The percent- 

 age increase in yields of wheat from manuring 

 compared with the same rotation without manure 

 is given in Table VIII. 



