>28 MAINE AGRICULTURAL EXPERIMENT STATION. 



•of the insects, or acting as an external irritant. Paris green is 

 an example of the first class; kerosene emulsion or pyrethrum 

 of the second. Hellebore, if applied in the dry form, acts in 

 both ways. By spraying the trees with Paris green, some parti- 

 cles of the poison will be lodged upon the young fruit or upon 

 the leaves ; then as the insects attempt to enter the fruit, or to 

 •eat the foliage, they are destroyed. 



Fungicides are of importance solely as preventives. The 

 coating of Bordeaux mixture, or other material, upon the fruit 

 and leaves, kills the germinating spores of the fungi before they 

 penetrate the plant tissue. The time of spraying will naturally 

 vary, depending on the purpose in view and the material used. 

 The subject has been discussed in Bulletin 29. 



ORCHARD WORK NOW IN PROGRESS AT THE EXPERIMENT 



STATION. 



The principal orchard work now in progress at the Experi- 

 ment Station is along the lines of tillage and fertilizers. At the 

 farm of Charles S. Pope, Manchester, a young orchard, set on 

 land which has never been plowed, has been laid off in plats, 

 part of which are treated with concentrated fertilizers, and part 

 with stable manure. Half of the orchard has been placed under 

 cultivation, and the other half is heavily mulched. 



Another orchard, on the same farm, has been divided into 

 plats for treatment with different salts of potash, with a view 

 to studying the effect, if any, upon quality of fruit and suscepti- 

 bility to attack of apple scab. 



In Aroostook County, as noted in previous reports, some of 

 the more promising Russian varieties of apples, plums, and 

 cherries are under trial ; also some of the hardier American sorts. 

 Such of these as have fruited were discussed in the Annual 

 Report of this Station for 1896. 



At present there are growing in the Station nurseries several 

 hundred of the hardier standard apples which will next year be 

 sent to different parts of the State, where encouragement to the 

 fruit growing industry seems necessary. These varieties 

 include Arctic, Shiawassee Beauty, Sutton Beauty, Westfield, 

 etc. 



