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Alate production by aphids on sugar beet: how likely is the evolution of sugar beet-specific biotypes?

Published online: 20 Apr 2000

Authors: Williams, I. S. & Dewar, A. M. & Dixon, A. F. G. & Thornhill, W. A.

Content type: Journal article

Journal title: Journal of Applied Ecology

Aphid clones that feed on the same plant species for many generations often develop biotypes specifically adapted to the particular host-plant. Such b...

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Effects of shelter on the growth of turnips and sugar beet.

Published online: 01 Jan 1974

Authors: Marshall, J. K.

Content type: Journal article

Journal title: Journal of Applied Ecology

Swedes cv. Victory and sugar beet cv. Klein E were grown at 2 sites in S.E. England and protected by a N.-S. screen with 50% permeability; the height ...

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Photosynthesis in crop profiles, measured by phytometers.

Published online: 03 Jan 1969

Authors: Leach, G. J. & Watson, D. J.

Content type: Journal article

Journal title: Journal of Applied Ecology

Using sugar-beet seedlings as phytometers, NAR, LAI and light intensity were measured at various levels in field-grown spring barley, winter wheat, sp...

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Soil impedance as a factor reducing crop seedling emergence, and its relation to soil conditions at sowing, and to applied water.

Published online: 01 Jan 1979

Authors: Hegarty, T. W. & Royle, S. M.

Content type: Journal article

Journal title: Journal of Applied Ecology

Seeds of calabrese, carrot, onion and sugar beet were sown in the field on successive occasions. Soil integral impedance (work done in penetrating the...

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Some effects of soil type and crop density on the activity and abundance of the epigeic fauna, particularly Carabidae, in sugar-beet fields.

Published online: 01 Jan 1976

Authors: Baker, A. N. & Dunning, R. A.

Content type: Journal article

Journal title: Journal of Applied Ecology

Pitfall trapping in sugar-beet crops in East Anglia in 1970 and 1971 showed that Carabidae were much more active and abundant than other epigeic preda...

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Food selection by skylarks and grazing damage to sugar beet seedlings.

Published online: 01 Jan 1981

Authors: Green, R. E.

Content type: Journal article

Journal title: Journal of Applied Ecology

Observations were made on sugar beet fields in Cambridgeshire and West Suffolk, UK, in April-May 1977 and 1978 from emergence of seedlings until they ...

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The relation of photosynthesis by phytometers in the profiles of kale crops to leaf area index above them.

Published online: 26 Oct 1970

Authors: Leach, G. J.

Content type: Journal article

Journal title: Journal of Applied Ecology

To estimate the effect of the foliage at different positions in the profiles of kale crops on the rate of photosynthesis below it, the leaf area index...

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Predicting the determinants of weed abundance: a model for the population dynamics of Chenopodium album in sugar beet.

Published online: 13 Apr 1999

Authors: Freckleton, R. P. & Watkinson, A. R.

Content type: Journal article

Journal title: Journal of Applied Ecology

Previously published literature on the population dynamics of a common arable weed, Chenopodium album, and its interactions with an arable crop, sugar...

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The relation of photosynthesis by phytometers in the profiles of kale crops to leaf area index above them.

Published online: 03 Jan 1970

Authors: Leach, G. J.

Content type: Journal article

Journal title: Journal of Applied Ecology

To estimate the effect of foliage at different positions in the profiles of kale crops on the rate of photosynthesis below it, crop LAI was varied by ...

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The relation of photosynthesis by phytometers in the profiles of kale crops to leaf area index above them.

Published online: 12 Jan 1970

Authors: Leach, G. F.

Content type: Journal article

Journal title: Journal of Applied Ecology

To estimate the effect of foliage at different positions in the profiles of kale crops on the rate of photosynthesis below it, crop LAI was varied by ...

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