236 



STATE BOARD OF AGRICULTURE. 





Fig. 3.— Peur Tree With Low Head. 



experiments carried on at the substation and from cooperative work done at 

 various points in that section that there are few bearing orchards upon which 

 potash and phosphoric acid cannot be used to advantage. These elements can 

 be secured respectively in muriate of potash, and acid phosphate or ground bone, 

 althoush where it can be obtained at not to exceed six dollars per ton unleached 

 hardwood ashes would be found more economical. Especially upon light soils 

 and where the trees ha^e produced several crops of fruit, nitrogen has also been 

 found lacking. While it can be obtained from stable manure and leguminous 

 cover crops, these sources are not always available and recourse may then be 

 had to nitrate of soda. 



