Show Raising Wheat I in Rotation i iThe The Minnesota station has studied the effects of the rotation of crops upon the humus content as well as upon the fertility of the soil Wheat grown continuously for four years removed annually 25 pounds of nitrogen nitrogen nitrogen nitro nitro- gen per acre while pounds more were lost This nitrogen was lost by the oxidation of the humus by chemically by wind windstorms windstorms windstorms storms and through ugh the loss of nitrates nitrates ni nl by drainage As a crop of spring wheat occupies the grou ground d during a short portion of the year it may be seen that during the greater part part part-of of the year the theother other factors are areat areat areat at work in eliminating this element In a rotation of wheat clover wheat and oats an average of pounds of nitrogen per acre was removed annually annually annually an an- I yet jet there was a gain for four years over and above this amount of pounds of nitrogen This nitrogen nitrogen nitrogen nitro nitro- gen Jt t is believed has been gained largely by the clover from the free nitrogen of the air In this rotation not not only was the nitrogen and humus humus content of the soil increased but larger crops were grown The North D Dakota kota station has tak taken n up the stud study of a suitable suitable- rotation n for forthe forthe forthe the wheat what farm Experiments carI carried carried car car- I ried on for foi six years show that continuous continuous continuous con con- wheat culture is unprofitable I while wheat in rotation Increases in yield and improve In quality Three crops of wheat and one of clover gave in four years almost as much wheat and more profitable returns than four crops of wheat in succession Little was gained in rotating g wheat with other cereals as spring rye barley I and oats but wheat after a cultivated crop gave a larger percentage of increase increase in in- crease than wheat after summer fallowing fallowing fallowing fal fal- lowing millet timothy and clover flax field peas or peas and millet The increase In the wheat crop over wheat after wheat was as follows After cultivated crops 75 per cent after fallow 63 per cent after millet 41 per cent and after timothy and clover 33 per cent When a cultivated ed ed crop CrOl will vill only pay for the labor of its production it Is better than summer summer sum sum- mer fallowing as the succeeding wheat crop will show Farmers Farmers' Farmers Farmers' Guide |