Page 38 



BETTER FRUIT 



April 



I Tie 



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^ e;icecu{e dttaatioa compelli^^ LABL L9 fkat are 6 



PS^l/nilD I A nri * '^"W'^jy <° 5^^^ ^"^"^ proper jellias power io d 



i^ CONTRACTS ISi -Highest QuAiiTr-PROMPrSERViCE-LowESTPRiCES / 



Zf ^^^'^ • »■*..-»-*» m^^fc SAMPLES AND PRICES UPON APPLICATION J 



/ WITH US ^A"S'ATI5'FY THE CU5»TOMeR" .i^^^/^J^yd/? 5 



Send for our 1915 Art Calendar. Free on Application 



:WOOD-LARK" 



TRADE riARK 





OIV 



QUICK, CERTAIN, 

 ♦»- DEADLY -f* 



Ready for Instant Use. Never Fails 



Destroys Sciuirrels, Gophers, Prairie Dogs. Sage 

 Rats. Apply now — win save millions In leaky 

 Irrigation ditches, destroyed fruit trees and 

 alfalfa fields. Money back If It ever falls. "Wood- 

 Lark" for 2.5 years has stood the test. It's crop 

 insurance against rodent pests. If your dealer 

 hasn't It, write us. 



Clarke, Woodward Drug Co. 



PORTLAND, OREGON 



WE MAKE A SPECIALTY OF 



Catalogs, Booklets 

 and Circulars 



FOR 



Nurserymen, Fruit Growers, Manufacturers 

 and Selling Agents 



CWrite us for specifications and 

 information. Quality and Service 



F. W. Baltes and Company 



Fine Printing Portland, Oregon 



tion of difTerent brands of these spray 

 materials. The trees selected were of 

 the Rome Beauty and Jonathan varie- 

 ties, eight years old, and producing 

 about 15 per cent wormy fruit in 1913. 

 The plats were selected from the inside 

 of the orchard block, contained about 

 two acres each, and of both of the 

 above varieties. Two standard brands 

 of powdered arsenate of lead and one 

 paste arsenate of lead, all obtained on 

 the local markets, were used in the 

 test. These were selected because they 

 represented the sprays accessible on 

 the local market at that time. Three 

 sprays were applied during the season, 

 with a power sprayer maintaining a 

 pressure of 200 pounds or more, and 

 hose equipped with extension rods and 

 nozzles capable of throwing a coarse 

 driving spray. The work was done by 

 the owner and myself, and care taken 

 to apply all three sprays thoroughly, 

 especial attention being paid to the 

 first or "calyx" spray. An effort was 

 made to reach all of the blossoms with 

 this spray, which was applied May 

 12th. The second application was 

 made May 29th and the third July 18th. 

 The paste was applied at the rate of 2% 

 pounds to 50 gallons of water and the 

 powder form applied at the rate 1% 

 pounds to 50 gallons of water, or just 

 one-half as much as the paste, since the 

 powder is known to have twice the 

 strength of the paste. The fruit from 

 three trees of each variety in each plat 

 was carefully examined at picking time 

 for evidence of injury from worms and 

 the results are here tabulated: 



SPRAYING EXPERIMENTS 



Sberwin-W iUiams Powdered Rome 



Arsenate of Lead Jonathan Beauty 



Number of apples examined. 1,644 1,694 



Number of apples wormy ... 11 24 



Per cent of apples wormy... .67 1.42 



Insecticide rating 98.95 



General Chemical Co. Paste 



Arsenate of Lead 



Number of apples examined. 2,621 3,044 



Ninnber of apples wormy ... 17 38 



Per cent of apples wormy... .65 1.24 



Insecticide rating 99.03 



"Corona Brand" Powdered 



Arsenate of Lead 



Number of apples examined. 1,681 3,439 



Number of apples wormy ... 9 37 



Per cent of apples wormy... .54 1.08 



Insecticide rating 99.10 



By careful attention to the manner 

 and time of application of the sprays it 

 has been possible to reduce the per- 

 centage of injury from codling moth to 

 less than 1.5 per cent in 1914 where the 

 injury was 15 per cent in 1913, and at 

 the additional cost of but one spray 

 (the third). Two sprays had been given 

 this orchard in 1913 by the owner, who 

 used a heavier strength of arsenate of 

 lead than here given. The experiment 

 further shows that there is little differ- 

 ence in actual results, whether the 

 paste or powdered form of arsenate of 

 lead is used, both giving good results, 

 though the powder has a slight advan- 

 tage in ease of mixing. The point to 

 note is that good results depend on the 

 time and thoroughness of application 

 rather than spray material used, and 

 these after all are the most important 

 factors in both the economy and effi- 

 ciency of our spray materials. 



WHEN WRITING ADVERTISERS MENTION BETTER FRUIT 



