!N^EW YoEK Ageicultueal Expeeiment Station. 265 



more, there are a few days during which the beetles can be poisoned 

 on the squashes; hence they are a valuable adjunct even where 

 covers are used. 



ISTone of the measures recommended thus far are as valuable 

 when used alone as when several are combined together as was 

 done in the field tests. Possibly the use of Bordeaux mixture and 

 squashes would not be as economical in small gardens as would 

 the use of covers and squashes. For growers of pickles and those 

 who grow cucumbers for market, I would recommend the use of 

 Bordeaux mixture on the cucumber vines and the use of squashes 

 both as a poisoned bait and as a lure. Several rows of squashes 

 should be planted around the margins of the field about four days 

 previous to planting the field with cucumbers or melons, as the 

 case may be. If desired, the squashes can be put in drills a few 

 feet apart, or even sown broadcast. At time of planting the 

 cucumbers, make a second planting of squashes on the margins 

 of the field. If the beetles are very thick, a third planting of 

 squashes had better be made. As soon as the first beetles are 

 seen around the squashes, about one-half of the latter, especially 

 the outside rows, should be thoroughly dusted with green arsenite 

 or any other form of arsenic that can be most easily obtained. 

 Part of the squash plants should be left untreated, for the reason 

 that a rain or heavy dew may follow the application of the poison 

 and kill the treated plants before many beetles are killed. When 

 the cucumbers are fairly up, they should be sprayed with Bordeaux 

 mixture, using four pounds of copper sulphate and four pounds 

 of quick lime to forty-four gallons of water, or what is usually 

 designated as the 1-to-ll formula, for making the mixture. This 

 mixture can be applied most cheaply, while the vines are small, 

 with a knapsack spraying machine. At the time the cucumbers 

 are sprayed, more of the squashes can be dusted with the copper 

 arsenite. If possible, the arsenite should be blo\vn onto all parts 

 of the squash plant, the object being to allow the beetles not a 

 particle of food that is not poisoned. After the beetles commence 

 to pair, the squashes can be cultivated out, although it is well to 



