RA SPBERRIES WEE VILS. 2 1 9 



covered with fresh soil. Early iu March a ring about an inch wide may be drawn 

 around each cane with Wilson's Sticky Oil or Davidson's Tree-Protecting Composition, 

 to prevent the ascent of the caterpillars. Extracting the infested buds and burning 

 them is a sure remedy ; they are easily detected by not pushing growth. Badly infested 

 cane^ may be cut away while the caterpillars are iu the bud, burning them without 

 delay. 



Raspberry Weevils. The Bud Weevil (Anthonomus rubi) is about | inch long, black, 

 with grey pubescence, but the colour varies. The female bores a hole in each flower 

 bud, pushing in an egg, and generally gnaws the stalk half through. The larvae feed 

 on the parts of the flower bud. similar to the apple-blossom weevil (see Vol. I., page 

 282), and the weevils appear from the buds in July, hybernating during the winter. 

 Other kinds of weevils, Otiorhjoichus sulcatus (see Vol. II., page 335) and 0. picipes, 

 often do great mischief to raspberry plantations (0. tenebricosus, Vol. II., page 90), 

 feeding on the shoots, leaves and buds. All of them are also injurious in their larval 

 state by feeding on the roots. The most effectual means of destroying the weevils is to 

 shake the plants after dark over shallow wooden trays, smeared with gas tar inside. 

 Getting rid of the grubs is somewhat difficult, but skimming off the surface soil and 

 proceeding as advised for larvse of the raspberry moth while in the ground, is recom- 

 mended ; also a dressing of nitrate of soda, 3 hundredweights per acre, 2 pounds per 

 rod, in February this also acting as a powerful fertiliser. 



Sometimes raspberry leaves are tunnelled by the larvse of a sawfly (Fcenusa pumilio) ; 

 squeezing the leaves between the finger and thumb, or picking and burning them as 

 soon as the pest appears, are the best remedies, The larvse of moths and sawflies feeding 

 on the leaves may be destroved by dressings of hellebore powder (Vol. II., page 224). 



