. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1923 ENTOMOLOGICAL SOCIETY. 61 MECHANICAL DEVICES AS AIDS IN THE CONTROL OF THE STRAW- BERRY ROOT WEEVIL (0. ovatus L.) W. Downes, Gordon Head, Experimental work on Stawberry Root Weevil control has been carried on during the last four years at Gordon Head near Victoria, British Columbia, and one of the principal features of this work has been the trial of various weevil- proof barriers. It was realized early in the work that while the established methods of keeping the weevil in check by the
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1923 ENTOMOLOGICAL SOCIETY. 61 MECHANICAL DEVICES AS AIDS IN THE CONTROL OF THE STRAW- BERRY ROOT WEEVIL (0. ovatus L.) W. Downes, Gordon Head, Experimental work on Stawberry Root Weevil control has been carried on during the last four years at Gordon Head near Victoria, British Columbia, and one of the principal features of this work has been the trial of various weevil- proof barriers. It was realized early in the work that while the established methods of keeping the weevil in check by the use of proper crop rotation, and by ploughing up infested fields in the fall, were efficient enough so far as they went, yet these methods did not prevent the weevils from passing from one plantation to another and re-infesting newly-planted fields. Moreover, efficiency in control by cultural methods only, is dependent very largely in a closely settled district upon co-operation between neighbouring growers, and with the varying opinions held by many as to the best cultural practices and weevil control methods, such co-operation is nearly impossible to bring about. The desirability. Crude oil barrier at Gordon Head, B. C. was apparent, therefore, of providing some barrier or device which would make a grower independent of his neighbour's plans. Also, weevil control by cultural methods entails the replanting of fields every third year, as even with the best of care it is generally found that only two crops of berries can be depended upon. To meet this deficiency in our weevil control methods two types of weevil- proof barrier have been tried at Gordon Head. Both of these barriers have given excellent results, in that it has been found possible not only to keep plantations nearly free from attack, but by their use to destroy the hordes of adult weevils passing from one plot to another or from adjoining infested land, so that the menace from their presence is removed and the risk
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
