Injurious Insects. 35 



Raspberry, continued. 



SNOWY OR TREE CRICKET (CEcanthtis niveus, Serv.). Small 

 and whitish cricket-like insect, puncturing canes for two 

 or three inches, and depositing eggs in the punctures. 



Remedy. Burn infested canes in winter or very early 

 spring. 



Red Spider (Tetranychus telarius, Linn). A small red 

 mite infesting many plants, both in the greenhouse and out 

 of doors. It nourishes in dry atmospheres, and on the 

 under side of the leaves. 



Remedies. Persistent syringing with water will destroy 

 them, if the spray is applied to the under surface. Fumes 

 of sulphur. Sulphide of soda wash. 



Root-Knot. A disease characterized by the knotting and 

 contortion of the roots of the peach, orange and many 

 other plants. It is usually most destructive on the peach. 

 It is caused by a nematode, or true worm. Gulf States. 



Preventives. Plant non-infested trees in fresh soil ; 

 bud into healthy stocks. Fertilize highly, particularly 

 with potassio fertilizers. Set the trees eight or ten inches 

 deep in high and dry soils. Infested sYnall trees may be 

 remedied, in part at least, by transplanting them into 

 highly-manured holes which have been prepared contig- 

 uous to them. 

 Rose. ROOT GALL-FLY. See under Raspberry. 



MEALY-BUG. On roses, a gill of kerosene oil to a gallon of 

 water is a good remedy. Syringe the plants in the morn- 

 ing, and a couple hours later syringe again with clean 

 water. See also under Mealy-bug. 



ROSE BEETLE, ROSE CHAFER or " ROSE-BUG" (Macrodactylus 

 subspinosus, Fabr.). Beetle three-fourths inch long, light 

 brown, feeding upon the leaves, blossoms and fruit. 



Remedies. Hand-picking. Knocking off on sheet early 

 in morning. Pyrethrum. Eau celeste. It is said to pre- 

 fer Clinton grapes to most other plants, and it has been 

 suggested that these vines be planted as a decoy. Open 



