September, 1907 



THE CANADIAN HORTICULTURIST 



231 



Some Recent Bulletins on OrcKard Pests 



Bevie-wed by Prof. 'Wra. UocHKead. Macdonald College 



INSECT and Fungus Enemies of the Grape 

 east of the Rocky Mountains," by Quaint- 

 ance and Shear (Farmers' Bulletin 284 U.S. 

 Dept. of Agric.) — This valuable bulletin dis- 

 cusses such enemies of the grape as the root- 

 worm, the berry-moth, the curculio, the leaf- 

 hopper, the leaf-folder, the tlea-beetle, the rose- 

 chafer, and the black-rot, the downy and the 

 powdery mildews, the anthracnose, the ripe-rot, 

 the bitter-rot, the white-rot, the crown-gall, the 

 root-rot, and "shelling." Of these, Canadian 

 \ineyards are free from the root-worm, the cur- 

 culio, and perhaps the crown-gall and the root- 

 rots. The treatments recommended for these 

 enemies of the grape are similar to those given 

 in the O.A.C. and the C.E.F. bulletins. Regard- 

 ing the cause of "shelling" of grapes, which is 

 sometimes serious in the Niagara district, noth- 

 ing definite is given. The disease may be due to 

 an imperfectly known fungus operating in im- 

 properly pruned and trained vines. The bulletin 

 is well illustrated, and the life -histories of the 

 insects and fungi are concisely stated. 



SOMETHING ABOUT SOW-BUGS 



"Notes on the Economic Importance of Sow- 

 bugs," by W. D. Pierce (Bull. 64, Pt. II, Bureau 

 of Entomology, U.S. Dept. of Agric.) — The sow- 

 bug or "pill-bug" is a very common creature in 

 dark, damp places, and in wet years may do 

 injury to garden crops, (lower gardens, vines, 

 etc. On the other hand, it is a useful scavenger, 

 but there is a danger that disease may be trans- 

 mitted on account of this scavenger habit. 

 "Cleanliness is probably the best preventive 

 against sowbugs' inroads, arsenical compounds 

 the best out-door remedies, and carbon bisul- 

 phide the best in-door remedy." Much inter- 

 esting information is furnished regarding the 

 habits and life-histories of three species, Arma- 



dillidiufn vulgare, Porcellio Uevis, and Metopon- 

 orlhus pruinosus, of which but little was known. 



THE CODLING MOTH 



"Spraying for the CodHng Moth," by J. W. 

 Lloyd (Bull. 114, Illinois Agric. Exp. Station). 

 — This is also a live problem in Canadian or- 

 chards, and the results of reliable experiments 

 along the line of prevention of wormy apples are 

 always welcome. The Illinois experimenters 

 found that it pays to spray carefully and 

 thoroughly with Paris green-bordeaux twice, at 

 least, for the first brood, the first application 

 being given when the petals have fallen, and the 

 second a week or ten days later. A large per- 

 centage of the fruit will be saved, and the injury 

 done by the second brood much lessened. 

 Moreover, there is a decided advantage in late 

 spraying for the control of the second brood. If 

 but one application be made it should be done 

 in early August, as this spraying will catch the 

 majority of the worms before they burrow far 

 into the apple. When it is remembered, how- 

 ever, that the worms of the second brood con- 

 tinue to appear for a period of four or fiVe weeks, 

 the wisdom of several sprajdngs becomes appar- 

 ent. Some of our apple growers now make these 

 applications for the control of the "scab." 



THE SAN JOSE SCALE 



"Commerical Miscible Oils for Treatment of 

 the San Jose Scale," by Messrs. Parrot, Hodg- 

 kiss and Sirrine (Bull. 281, N.Y. Agric. Exp.St.)— 

 The Geneva experimenters found that applica- 

 tions of proprietary miscible oils in the propor- 

 tion of 1 to 20 or 25 of water, failed to give uni- 

 form results, and that when a stronger solution 

 was used, such as 1 to 10 or 1.5, it did not give as 

 good results as the boiled .lime-sulphur wash 

 and was much more costly. These results co- 



incide with those from Ohio, and with those 

 obtained by the Ontario Department of Agricul- 

 ture, under the direction of the writer, two 

 years ago. 



APPLE AND PEAR MITES 



"The Apple and Pear Mites," by Messrs 

 Parrot, Hodgkiss and Schoene (BuU. 2Sr,, N.Y 

 Agric. Exp. St.)--This bulletin represents an 

 earnest study of the mites that thrive upon the 

 apple and pear. Five species were observed and 

 described, the leaf blister mite, Eriophyes pyri, 

 being the most abundant. This blister-mite is 

 frequently abundant on young stock in some of 

 our Ontario nurseries. The best treatment is to 

 prune carefully, and to spray during the late 

 fall or early spring with kerosene emulsion 

 diluted with five parts of water, with miscible 

 oils diluted with 15 to 20 parts of water, or with 

 sulphur wash. 



On another page can be seen the advertise- 

 ment of the new GuUine Folding Fruit Box. 

 The illustration shows the box packed ready 

 for shipment as well as folded flat for trans- 

 portation to the packer. All parts are pivot- 

 ally and permanently attached together, there 

 are no nails to drive or take out, the four 

 screws sent with each box serv^ to complete 

 it for shipment. It is cheap and exceedingly 

 strong, the sides and ends are recessed into 

 the frame pieces, and the box is made of hard- 

 wood. The frames, which project all round 

 the body of the box, serve as handles by which 

 to pick it up; they also form an air space round 

 the contents, regardless of liow closely the 

 boxes may be placed together for transporta- 

 tion. The surfaces are all sufficiently flexible 

 to allow for the usual shrinkage of the fruit in 

 transit. 



Have you a Maynard plum tree? If not, 

 let us send you one free as described in our 

 announcement on another page of this issue. 



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