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The results of experiments conducted during 1968 showed that the presence of weed within the crop provides a suitable habitat for some of the ground-l...
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 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 are virtually the author's summaries of these parts of a series on observations in central England [cf. RAE A 57 7969].
Some of the chan...
The density-dependent persistence of four tephritid flies on patches of their host vegetation (Urophora jaceana and Chaetorellia jaceae on Centaurea n...
Read moreThe following are virtually the author's summaries of these parts of a series on observations in central England [cf. RAE A 57 7969].
Following the us...
The following is based largely on the authors summary. This paper is the first of a series describing observations on a population of Pieris rapae (L....
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