18 



chased from local box manufacturers at about 25 cents, complete with boxes. 



" The veneer for making the boxes is manufactured exclusively by the 

 B. C. Manufacturing Co., New Westminster, B. C., and costs this year $3.25 

 per M. in the K. D. (that is not made up) f. o. b., New Westminster. The 

 crates can be bought for 9% cents each in the K. D." 



DISEASES. 

 (Michigan Bulletin No. 163.) 



STRAWBERRY LEAF BLIGHT (Sphoerella fragarioe Sace). While subject 

 to the attack of but few diseases, nearly all varieties of strawberries are 

 more or less injured by the fungous disease commonly known as strawberry 

 rust or leaf blight. This attacks not only the leaves, but the fruit stalks and 

 the calyx, or husk, about the berries, and the injury is then so severe that the 

 crop fails to ripen. It appears first as a purplish spot upon the leaves, but 

 as this enlarges the centre becomes brown and finally white. If these spots 

 are numerous upon the leaves, the tissue finally dries out and the entire leaf 

 will be destroyed. The injury is even more severe when upon the fruit stems, 

 as a very small spot will be sufficient to girdle them, and the shrivelling and 

 drying of the fruit will follow. 



There is a marked difference in the susceptibility of the different 

 varieties to attack by this disease, and in selecting varieties for planting 

 those that are least subject to attack should be chosen. Some of the kinds 

 that when free from disease are very productive, become almost worthless 

 when the conditions favour the development of the fungus. When grown 

 under conditions that favour a normal growth, and when they are not 

 subjected to a check, even the kinds that are most subject to injury 

 frequently escape. Experiments have frequently shown that all varieties 

 can be kept practically free from the attack of this disease if properly 

 sprayed with Bordeaux mixture. In setting out a new plantation, care 

 should be taken to obtain plants that are practically free from disease, and 

 all leaves that show signs of an attack should be removed and burned. As 

 there may be spores of the disease upon the remaining leaves, it will be well 

 to dip the plants into Bordeaux mixture, and after they have been set in the 

 field, after a week or ten days, they should receive a spraying with the same 

 material. One or two other applications at intervals of two weeks will also 

 be advisable, and still another should be made about the 1st of August, in 

 case diseased leaves can be found at that time. The following spring the 

 plants should be sprayed as soon as growth has started, and a second applica- 

 tion should be made after the flower buds have formed, but before they open. 

 As noted above, the use of Bordeaux mixture at this time will have a marked 

 effect against the strawberry weevil, especially if Paris green is added. This 

 treatment will ordinarily carry through the varieties that are most subject 

 to the attack of leaf blight without serious injury- If the plantation is to 

 be kept for another year, it will be well to burn it over, and to spray as soon 

 as the new leaves have formed. 



(Central Experimental Farm Bulletin 21.) 



LKAF RI.KIIIT RUST. The purplish or reddish-brown spots which appear 

 on th<> loaves of strawberry plants during the growing season and in greatest 



