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The author has found that the stages in the ovarian cycle of female of Hylemya (Erioischia) brassicae (Bch.) can be numbered in a similar way to that ...
Read moreLife tables for populations of Hylemya (Erioischia) brassicae (Bch.) on cabbage crops in Canada [cf. RAE/A 60, 538] and England [50, p. 286] are analy...
Read moreThe effect of cover (intersown clover or lettuce or artificial material) on egg populations of Delia brassicae (Wied.) on cabbage crops was investigat...
Read moreThe occurrence of enemy-free space presents a challenge to the top-down control of agricultural pests by natural enemies, making bottom-up factors suc...
Read moreA marking method for Hylemya (Erioischia) brassicae (Bch.), in which the flies were fed on a sucrose solution containing radioactive phosphorus (32P) ...
Read moreThe presence of weeds within the crop provided a habitat which was more suitable for some of the arthropod predators of P. rapae. Harpalus rufipes was...
Read moreThe adult life-span and the factors affecting egg production in Pieris rapae (L.) (especially age, temperature and solar radiation) were investigated ...
Read moreThe following is based largely on the author's summary. During investigations in Britain in 1968 on the effect of weed control on the incidence of Pie...
Read moreThe following is virtually the authors' summary. The dispersal of a population of Hylemya (Erioischia) brassicae (Bch.) was studied in Oxfordshire ove...
Read moreAdults of Hylemya (Erioischia) brassicae (Bch.) labelled with 32P were released 24 m from a plot of cabbage and recaptured with water traps. The respo...
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