HORTICULTURE BY IRRIGATION. 



WHAT, WHEN, AND HOW TO SPRAY. 



All well informed orchardists of experience recog- 

 nize the prime necessity of properly spraying their 

 trees. In no part of the United Stated are the 

 orchards so free from disease and insect enemies as 

 to relieve the fruit grower from the labor and expense 

 of waging an annual warfare against his tireless foes- 

 It is alleged that in spite of all the efforts directed to 

 the destruction of noxious insects, the annual loss to 

 the farmer and fruit grower from this cause alone 

 amounts to hundreds of millions of dollars. In view 

 therefore, of the transcendent importance of a correct 

 knowledge of the subject of proper and timely spray- 



ing of orchards, it is hoped that the subject as herein 

 presented may meet with the approbation of 

 orchardists generally. For much of the valuable 

 information here given we are indebted to the careful 

 and prolonged researches of Professor Bailey, of the 

 Experiment Station at Cornell University, New York. 

 The information conveyed by the table, and formula 

 following may be easily worth to a single orchardist a 

 hundred times the yearly cost of THE IRRIGATION 

 AGE, and this number should be carefully preserved 

 for future use, for the orchardist will certainly have 

 frequent need to draw upon these pages for guidance 

 in his work. 



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