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EXPERIMENT STATION REPORTS. 



223 



Now, the little flaps in the leaves in which the pupal stage is passed 

 fall out and lie on the ground during winter and the advantage to be 

 gained by early plowing under of leaves and the cover-crop is easy to 

 be seen. We, therefore, recommended that the cover-crop be sowed early 

 enough so that it could get its growth in the Pall and be turned under 

 early in the Spring. This, we believe, will destroy many pupae. 



The spray generally used was arsenate of lead at the rate of one and 

 one half pounds to a barrel of bordeaux with a pound of resin fish oil 

 soap added for a sticker. It was recommended that 300 gallons to the 

 acre be applied under high pressure. 



Fig. 4 — Grape-berries just set. Blooming period completed. Time for second spray 



An inquiry into methods used in individual vineyards after picking 

 time, clearly showed the superiority of the follow-up method over a spray 

 put on with a boom rig. It also indicated the superiority of four sprays, 

 the loss in some vineyards so sprayed being often less than 7%. The 

 vineyards sprayed by the boom method and with a less number of ap- 

 plications, lost sometimes as high as 9'5%. This was exceptional how- 

 ever, the loss over the entire vineyard usually being under 50% except 

 on the borders of the vineyards. 



In general it may be said that the best results were obtained when 

 hand-spraying was done by the trailer method and the best of all when 

 the application was most liberal. We were greatly assisted in this work 



