60 :massachusett8 horticultural society. 



or fuugous pest soon comes a remed}' with which we may protect 

 ourselves if we will. 



AVheu the Colorado potato beetle first made its appearance amoug 

 us we thought we must give up this important crop, but now we 

 find that by proper vigilance the crop can be successfully and 

 profitably grown. So when we are almost discouraged in our 

 attempts to grow fruit or other farm or garden crops, relief seems 

 near us and we feel sure that we shall be able to combat all foes. 



It is to the consideration of some of the most injurious insect and 

 fungous enemies and their destruction that I invite your attention 

 this morning. 



In the growth of the apple we have to contend Avith the Codling 

 Moth {Carpocapsa pomonella), the Canker AVorm {Anisopteryx 

 vernata), the Tent Caterpillar {Clisiocamjya Americana), the 

 Apple Maggot {Tripeta pomonella) , and the Plum Curculio {Cono- 

 trachelus nenuphar) among the insects, and the Apple Scab 

 (Fusicladium dendriticum) , which also produces the Leaf Blight, 

 among the fungi. 



With the pear we must contend with the Codling Moth, the Plum 

 Cnrculio, and the pear tree Psylla {PsyUa pyri) among the insects, 

 and the pear leaf blights {Entomosporum macnlatuni and Fusi- 

 cladium p^ri/<()i :iiid the so-called Fire Blight (Micrococcus amy- 

 lovnrus) . 



The plum is attacked by the Plum C'urculio — about the only 

 insect seriously injurious to it — and the Plum AYart or Black Knot 

 (Ploivrightia morbosa), the Leaf Blight (Puccinia prunispinosce) , 

 and the Brown Rot of the fruit {Monilia fracligenea) . 



The peach is injured by the Borer {u^geria exitiosa). the Plum 

 Curculio, and the Brown Rot of the fruit. 



With the cherry the Plum Curculio is very injurious and the Rose- 

 bug {Macrodactylis suhspinosa) sometimes destroys the leaves. 



The grape perhaps has the greatest numV)er of fungous foes, 

 and among the most injurious are the Powdery Mildew [Peronospnra 

 oiticola), whicli is also the cause of the Brown Rot; the Black Rot 

 (Lcestedia Bidwillii) and the Rose-bug and Phylloxera (Phylloxera 

 vastatrix) among insects. 



The strawberry is injured by the Leaf Blight ( Sphcerella fragarice) 

 and the Crown Borer (Tyloderma fragarice) . 



For the destruction of the larger number of this great host we 

 have two remedies, the arsenites for the insects and copper salt in 

 solution for the funui. 



