212 STATE BOARD OF AGRICULTURE. 



little value and it is important that unless a national quarantine against 

 interstate shipments from infected regions is provided, our state law 

 be so amended as to make it possible to put on a quarantine, or embargo, 

 against the shipping of white pine trees into Michigan from states 

 known to be infected. 



THE CONDITION OF MICHIGAN ORCHARDS. 



While it is true that in many sections in Southern Michigan the farm 

 orchards have been partially or quite destroyed by the San Jose scale, 

 it is really the best thing that could happen to them as most of them 

 are old and have never received much attention. Such trees produce 

 little or no fruit and what they furnish is of no practical value. When 

 the law is enforced and the owners are compelled to spray the trees, 

 even though they think they do it thoroughly, the work is generally so 

 imperfectly performed that it has little effect in controlling the scale, 

 and it merely results in prolonging the life of the trees and distributing 

 the scale. 



The spraying of orchards for this and other scale insects has gradually 

 increased until in many sections, and especially in the so-called "fruit 

 regions," it is the exception that an orchard is left unsprayed. Each 

 year the importance of thoroughness and regularity in making the ap- 

 plications is better understood and fewer mistakes are made in the ma- 

 terials used. 



Another hopeful as well as helpful point in the control of this insect 

 is that various native parasites are working upon it and in some sec- 

 tions trees which formerly were badly infested are now practically free 

 from the scale even though they have not been sprayed. 



Peach yellows, little peach and black knot have been less trouble- 

 some than formerly, due very largely to the owners of infected orchards 

 giving more attention to the prompt removal of infected trees. 



For a number of years the apple trees, as well as wild cherry and 

 other trees in the northern part of the State have been covered with 

 the ''tents" of apple tree tent caterpillars, but, although they were still 

 plentiful in some sections, over a large area where they did much harm 

 in 1914, it was difficult to find them in 1915. This was due to para- 

 sites which attacked them as larvae and to some extent in the egg and 

 pupal stages. 



LIST OF NURSERYMEN AND DEALERS LICENSED TO SELL NURSERY STOCK IN 



MICHIGAN. 



The following nurserymen and dealers are allowed to do business in 

 this State, having taken out a license as is required by the law. Only 

 such nurserymen living in another state as have taken out a license 

 are authorized to sell stock in Michigan through agents or canvassers, 

 but they may without a license carry on what is known as a catalogue 

 or mail order business. 



NURSERIES LICENSED IN MICHIGAN FOR 1915-16. 



Allen Bros., Paw Paw. Augustine & Co., Normal, 111. 



Allis, E. W., Adrian. Babcock & Son, Charlevoix. 



