22 



constantly covered with a thin coating of oil, or the buds and blossoms 

 with the arsenical. For example, if the variety of berry to be treated 

 begins to bloom April 27, it might be sprayed on the 24th or 2r)th, again 

 on the 29th or 3()th, and a third time, say May 5. It is doubtful if a 

 fourth application would be i)rotitable except in the event of rain or heavy 

 dew fall after spraying, as the chief damage is done during the first two 

 weeks of blooming. The finest possible mist-like spray should be 

 obtained and applied lightly, in such a manner that it will adhere to the 

 plants, and not form globules aud roll off to the ground. 



In the use of the kerosene emulsion the greatest care should be 

 observed, first, that it be proi)erly prepared, second; that it be not 

 ai)plied in too large quantity. In its i)re])aration the usual fornuila is 

 used, viz, 2 parts kerosene, or coal oil, to 1 part soap solution or milk. 

 For use on strawberry vines a 10-per cent solution, made by diluting 

 with 9 parts water, will probably give the best results. 



Either Paris green or London purple may be used on strawberry in 

 the same proportion as on apple, viz, 1 pound of the poison to 150 gal- 

 lons of water. 



The best form of apparatus for spraying garden plants is the knap- 

 sack sprayer, fitted with the finest Vermorel spray-nozzle. 



In case the plants should also be affected with blight the Bordeaux 

 mixture may be enij)loyed as a diluent, instead of lime and water, with 

 either the emulsion or the arsenites and in the same proportion. 



Full directions for the preparation and application of these remedies 

 are given in Farmer's Bulletin No. 19 of this Department, and therefore 

 need not be repeated here. 



It should also be remembered that the arsenicals will act with good 

 success on other injurious insects that might be present on the vines, 

 e. g., the strawberry slugs, the leaf-rollers, and the adults of the root- 

 borers, while the emulsion would prove valuable against the strawberry 

 plant louse. 



(hi Corerlnfj Beds as a Preventive. — Several conditions have operated 

 against the adoption of a covering for the beds: A disinclination on 

 ' the part of the grower to incur what seemed an extra expense — although 

 this would be amply i-epaid by the protection against frost and the 

 earlier harvesting of the crojj — and a general disposition to " take the 

 chances" of the insect being again injurious. Again, there is often 

 great difficulty in inducing a former to adopt remedial measures except 

 at the time when the damage is most apparent, and this is, of course, too 

 late for successful treatment of a species like the one under considera- 

 tion. Another reason assigned for failure to employ precautionary 

 measures was a fear that the insect hibernated in the beds. jS^ow, 

 while a few individuals may do so, particularly in old beds that have 

 become choked up with grass and weeds, the majority, in all probability, 

 seek more sheltered retreats. In conversation on the subject in 1892 

 with some of our local growers I expressed the opinion that the new 



