31S 



STATE BOARD OF AGRICULTURE. 



Fig. 38. — Grape Phylloxera, after Mariatt. Faruur'^j Bui. 70. U. S. Dept. Agr.. Div. of Ent 



The most effective method of combatina: this foe is by grafting the vine on 

 resistent native stocks. This method promises the best results in a general way. 

 The practice of flooding the vineyard for thirty days in the winter time is 

 practiced in France where possible, but only in rare instances is this feasible 

 here. Planting in almost pure sand is said to be very efficacious and the use 

 of carbon-bisulphide is sometimes resorted to when the injury is very serious, 

 three doses of one-fourth of an ounce each, of the liquid being injected into each 

 square meter (about one and one-fifth square yards). For those intending to 

 use carbon-bisulphide, it will be well to consult Johnson's "Fumigation Methods." 

 published by the Orange Judd Company, see pages 262 to 267. The effects of 

 different soils, depth of soil, and moisture are very carefully treated. 



The Grape-vine Root-worm. {Ficlia viticida.) 



This first-class pest is included here not because it is at present working in 

 Michigan, so far as is known to the writer, but because it is to be expected at 





Fig. 39.--Grape-vine Fidia, Farmer's Bui. No. 70, Mariatt, U. S. Div. of Ent. Dept. of .4ki. 



