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Hedges. VI. Habitat diversity and crop pests: a study of Brevicoryne brassicae and its Syrphid predators.

Published online: 29 Jun 1972

Authors: Pollard, E.

Content type: Journal article

Journal title: Journal of Applied Ecology

The following is based largely on the author's summary. A study was made in eastern England in 1969-70 on aphidophagous Syrphids and Syrphid predation...

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Some effects of weed control on the numbers of the small cabbage white (Pieris rapae L.) on brusseb sprouts.

Published online: 01 Jul 1970

Authors: Dempster, J. P.

Content type: Journal article

Journal title: Journal of Applied Ecology

The 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...

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The effect of uncultivated land on the distribution of cabbage aphid (Brevicoryne brassicae) on an adjacent crop.

Published online: 04 Jul 1965

Authors: Van Emden, H. F.

Content type: Journal article

Journal title: Journal of Applied Ecology

The following is based almost entirely on the author's summary of this account of investigations in southern England in 1957-58. The numbers of Brevic...

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Some effects of weed control on the numbers of the small cabbage white (Pieris rapae L.) on brussels sprouts.

Published online: 26 Oct 1970

Authors: Dempster, J. P.

Content type: Journal article

Journal title: Journal of Applied Ecology

The 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...

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The foraging behaviour of honeybees (Apis mellifera L.) on Brussels sprout (Brassica oleracea L.).

Published online: 01 Jan 1975

Authors: Free, J. B. & Williams, I. H.

Content type: Journal article

Journal title: Journal of Applied Ecology

Bees foraging for nectar on flowers of cultivars with deep corolla tubes and large floral parts found it difficult to reach the inner nectaries. They ...

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Some effects of weed control on the numbers of the small cabbage white (Pieris rapae) on brussels sprouts.

Published online: 12 Sep 1970

Authors: Dempster, J. P.

Content type: Journal article

Journal title: Journal of Applied Ecology

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...

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The effect of uncultivated land on the distribution of cabbage aphid (Brevicoryne brassicae) on an adjacent crop.

Published online: 03 Nov 1965

Authors: Van Emden, H. F.

Content type: Journal article

Journal title: Journal of Applied Ecology

The numbers of Brevicoryne brassicae and its parasites and predators in a crop of brussels sprouts were counted during a season. The results were grou...

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Mortality of overwintering pupae of the cabbage root fly (Delia brassicae).

Published online: 01 Jan 1981

Authors: Finch, S. & Skinner, G.

Content type: Journal article

Journal title: Journal of Applied Ecology

During the winter of 1976-77, few pupae of Delia brassicae (Wied.) were removed by predators from either natural or introduced populations of pupae bu...

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Studies on the weeds of vegetable crops. V. Final observations on an experiment with different primary cultivations.

Published online: 29 Oct 1966

Authors: Roberts, H. A. & Stokes, F. G.

Content type: Journal article

Journal title: Journal of Applied Ecology

Annual determinations were made of the numbers of viable weed seeds in the soil on plots of a 9-year experiment with vegetable crops in which 4 primar...

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The control of Pieris rapae with DDT. II. Survival of the young stages of Pieris after spraying.

Published online: 01 Jul 1970

Authors: Dempster, J. P.

Content type: Journal article

Journal title: Journal of Applied Ecology

The 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...

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