19 1 9 



BETTER FRUIT 



Page 27 



season of the year it will be even more 

 desirable than cyanide of mercury, as it 

 can be used on both wounds and tools. 

 The writer feels that a 10 per cent solu- 

 tion of formaldehyde can be safely 

 recommended for both tools and 

 wounds in blight work during the fall 

 and winter months. The commercial 

 formaldehyde conmionly sold by drug- 

 gists — 40 per cent strength — was used 

 in this work. A 10 per cent strength in 

 this discussion means one part of com- 

 mercial formaldehyde mixed with nine 

 part water. This strength causes notice- 

 able, but immaterial, injury to the mar- 

 gins and surface of the wound. 



At this season of the year in his regu- 

 lar blight-control work in the Station 

 orchard, the writer is using 10 per cent 

 formaldehyde for both wound and 

 tools. Next spring and early sunmier 

 he will use cyanide of mercury on the 

 wounds until experiments have decided 

 whether formaldehyde is effective at 

 that critical season. I must repeat that 

 for wounds alone cyanide of mercury 

 is thoroughly efTective at all seasons of 

 the year, and where every wound, cut 

 and scratch made by his tools is disin- 

 fected with this material it will prove 

 entirely eflfective. 



These results were regarded of such 

 importance that the work was repeated 

 on Bartlett, Anjou, Howell, Comice, 

 Bosc and Winter Nelis. In one series 

 a bouillon blight culture was used, 

 while in the other series we used the 

 typical blight onze from badly blighted 

 pear trees. In some of these later ex- 

 periments the disinfectants were used 

 at the same strengths as in the first 

 experiment, while in others different 

 strengths were tried. The results were 

 almost identical with those in the first 

 experiment. With the exception of a 

 few wounds, on trees making very slow 

 growth, all of those treated with cor- 

 rosive sublimate, cresol, Bordeaux 

 paste, lime-sulphur and Black-leaf 40, 

 again developed blight. Not a single 

 wound treated with cyanide of mercury 

 has developed the disease. 



In all of the earlier experiments pure 

 cyanide of mercury and distilled water 

 was used. The disinfectant was pre- 

 pared fresh each day, carried in glass 

 receptacles, and applied with a clean 

 paint brush. Two drops of blight cul- 

 ture ooze was applied to each wound to 

 make the test a severe one. 



Experiments are now in progress to 

 determine the value of the cyanide of 

 mercury tablets commonly found on 

 the market, the effect, if any, of hard 

 water on their disinfecting quality, and 

 whether the material is impaired when 

 carried in a tin bucket and applied with 

 a sponge. Also to determine the weak- 

 est strength of cyanide of mercury that 

 will destroy blight bacteria on the 

 wounds of pear trees. 



The first shipments of Louisiana 

 strawberries commenced to move be- 

 tween March loth and 20th. The ship- 

 ments will be made this year for the 

 first time in 24 pint and 24 quart stand- 

 ard crates. The crop of Louisiana 

 berries is estimated this year al 1,000 

 cars. 



Farmers, Fruit Growers and Home Owners 

 ATTENTION ! 



Write for our big descriptive catalogue and prices for trees delivered to your 

 nearest railway station, freight paid. 



PEARS PAY. Chester Ferguson, of Yakima, Washington, realized an average 

 of $2,016 per acre for pears this year, 1918. PLANT PEARS. 



Agents wanted to represent us in each locality. Address 



OREGON NURSERY COMPANY 



ORENCO, OREGON 



Orcas Lime— Fruit Spray Lime 



NO SUPERIOR FOR SPRAYING 



r\ «T • f^ ^^^w^ S. W. R. DALLY, Selling Agent 



UrCaS; Lime Company 332 Pioneer Bunding, Seattle 



,,,,,( tiitii iiiiiiiiiMiimniii timimimmiii t tmtmn \»^ 



WHAT EVERY HOME CANNER SHOULD HAVE | 



ONE otour H.&A. Hand Power Double Seamers. i 



It is the only hand power seamcr built that will se.il all = 



- „- , sizesof sanitary fruit and vegetable cans. Write for prices : 



: 1^1 and descriptive matter to Department T. i 



\~ HENNINGER & AYES MFG. CO., Portland, Ore. | 



i 7 Builders of Stamen and Sleam Pressure Canning Oulfils : 



:„,,,,„,„ iiMiiii Ill ""' ' iiiiiiiiiiiiMi" 



RHODES MFG. C( 



520 S. DIVISION AVE., GRAND RAPIDS. MICH 



^^^E only 



pruner 

 made that cuts 

 from both sides of 

 the limb and does not 

 (Ti ^ , J bruise the bark. Made in 



•Patented ^„ ^^y,^^ ^„j ^^^^^ All 



shears delivered free 

 to your door. 



Write for 

 circular and 



prices. 



'M'mmj, 



PRINTING 



FOR FRUIT GROWERS, CANNERS, MANUFACTURERS 

 AND MERCHANTS 



CATALOGS STATIONERY 

 BOOKLETS BLANK BOOKS 

 POSTERS LABELS 



ADVERTISING MATTER 



WRITE FOR PRICES AND SPECIFICATIONS > OUT OF TOWN ORDERS EXECUTED 

 PROMPTLY, ACCURATELY AND ECONOMICALLY 



WE PRINT Better Fruit 



F. W. BALTES 6? COMPANY 



PORTLAND, OREGON 



WHEN WRITING ADVERTISERS MENTION BETTER FRUIT 



