F i^4y 



1 ij 



in view of the present market de'pression. For example, one suggestion 

 is to postpone indefinitely the next re^u|^r, pruning, and by ceasing 

 pkicking, to allow the bushes to run up ; a Second is to prune in the 

 ordinary way, but to eliminate subsequent plucking until conditions 

 improve ; while a third is to cease plucking when the next pruning 

 becomes due, and to allow the bushes to rest and run up for any period 

 up to six months, according to elevation. 



If pruning were postponed and plucking continued, it would probably 

 result in a complete infestation of the branches, extending later 

 throughout the collar to the soil level. This might in some degree 

 be prevented by the improvement in the bushes that would result 

 from the cessation of plucking, but in the absence of the usual culti- 

 vation and manuring the extent of this is doubtful. Consequently, 

 from the point of view of borer infestation, the suggestion that pruning 

 should be eliminated and the tea abandoned indefinitely cannot be 

 approved. It is urged that where estates are heavily infested, the tea 

 should be pruned when due, although the pruning might be delayed 

 and plucking stopped for a period not exceeding six months with less 

 serious consequences than if pruning were postponed indefinitely. 

 Prunings should always be burnt to prevent the emergence of the 

 beetles. Where it is necessary temporarily to abandon tea (as opposed 

 to ceasing plucking for a definite period), pruning should certainly 

 precede abandonment. 



Where the crop can be sufficiently reduced by fine plucking only, 

 these points do not arise, but it will be interesting to observe whether 

 this milder treatment of bushes will result in any resistance to borer 

 attack ; in fact, it is most desirable that the effect on the borer of any 

 departure from the ordinary estate routine should be carefully observed. 



McLaine (L. S.). The European Com Borer Infestation. — Agric. 

 Gaz. Canada, Ottaica, vii, no. 12, December 1920, pp. 938-939. 



Field scouting, completed on 23rd October, showed that seven 

 of the thirteen counties examined were infested with Pyrausta nuhilalis. 

 The two districts infested [R. A.E., A, ix, 14] are both on the shore of 

 Lake .Erie, and cover 340 and 3,430 square miles respective^. 



A ^linisterial Order, Quarantine No. 2 (Domestic), was passed on 

 29th November 1920, prohibiting the movement from the specified 

 quarantined townships to points outside of maize fodder or maize 

 stalks, including broom corn, whether used for packing or other 

 purposes, green sweet maize, roasting ears, maize on the cob or maize 

 cobs. The quarantine does not apply if the products have undergone 

 a process that eliminates the risk of their carrying P. niibilalis, nor 

 to clean shelled maize or clean seed of broom corn, nor to shipments 

 of the articles enumerated through the quarantined area on a through 

 bill of lading, or shipments for scientific purposes by the Dominion 

 of Ontario Departments of Agriculture. Shipments of dried seed 

 maize for recognised exhibitions are to be passed at the point of 

 destination by a duly appointed inspector. 



Conference on Grasshopper Control. — Agric. Gaz. Canada, Ottawa, 

 vii, no. 12, December 1920, pp. 967-968. 



A conference on grasshopper control in the Prairie Provinces was 

 held in Winnipeg on 8th and 9th October. Control and investigation 

 work carried on in 1920 was reviewed, and plans made foi 1921. 



(2290) M 2 



