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Showing 11 results

Effects of planting density on bulb yield in the tulip.

Published online: 26 Oct 1970

Authors: Rees, A. R. & Turquand, E. D.

Content type: Journal article

Journal title: Journal of Applied Ecology

The effects of 5 planting densities (p), viz. 10x20, 10 x 10, 10 x 7. 5, 10 x 5 and 5 x 7. 5 cm., on leaf growth and bulb yield were investigated for ...

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Biological control of the bulb mite, Rhizoglyphus robini, by the predatory mite, Hypoaspis aculeifer, on lilies: predator-prey interactions at various spatial scales.

Published online: 05 Sep 1996

Authors: Lesna, I. & Sabelis, M. & Conijn, C.

Content type: Journal article

Journal title: Journal of Applied Ecology

Experiments in closed jars with lily bulbs at 25°C showed that the predator, Hypoaspis aculeifer, can suppress populations of its prey, Rhizoglyphus r...

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The effect of weeds on the growth and development of narcissus.

Published online: 01 Jan 1978

Authors: Lawson, H. M. & Wiseman, J. S.

Content type: Journal article

Journal title: Journal of Applied Ecology

Competition from weeds (Agropyron repens, Stellaria media, Poa annua and others) in the first growing season hastened foliage senescence and reduced b...

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The natural mortality of wheat-bulb fly larvae.

Published online: 01 Jan 1974

Authors: Ryan, M. F.

Content type: Journal article

Journal title: Journal of Applied Ecology

In further investigations at Rothamsted [cf. preceding abstract], parasitism, overcrowding (two or more larvae in the same shoot), disease and predati...

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A population dynamics approach to the wheat bulb fly Delia coarctata problem.

Published online: 01 Jan 1978

Authors: Kowalski, R. & Benson, J. F.

Content type: Journal article

Journal title: Journal of Applied Ecology

A key-factor analysis is presented using data on Delia coarctata (Fall.) populations collected over 12 years from Stackyard field, Rothamsted. The ana...

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The relationship of potato leaf temperatures to air temperatures as affected by overhead irrigation, soil moisture and weather.

Published online: 19 Dec 1972

Authors: Lomas, J. & Schlesinger, E. & Zilka, M. & Israeli, A.

Content type: Journal article

Journal title: Journal of Applied Ecology

Automatically recording thermocouple sensing elements clipped to potato leaves and thermocouple needles inserted into the midrib of the leaf showed th...

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The natural mortality of wheat-bulb fly eggs in bare fallow soils.

Published online: 01 Jan 1974

Authors: Ryan, M. F.

Content type: Journal article

Journal title: Journal of Applied Ecology

The survival of four populations of eggs of Hylemya (Leptohylemyia) coarctata (Fall.) at Rothamsted in southern England was studied. Few eggs disappea...

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The distribution of eggs, larvae and plants within crops attacked by wheat bulb fly Leptohylemyia coarctata (Fall.).

Published online: 29 Jun 1972

Authors: Bardner, R. & Lofty, J. R.

Content type: Journal article

Journal title: Journal of Applied Ecology

Fields in southern England were sampled over seven years to assess populations of eggs and larvae of Hylemya (Leptohylemyia) coarctata (Fall.) and of ...

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Estimates of population size and longevity of adult narcissus bulb fly Merodon equestris Fab. (Diptera: Syrphidae).

Published online: 01 Jan 1977

Authors: Conn, D. L. T.

Content type: Journal article

Journal title: Journal of Applied Ecology

In investigations on Merodon equestris (F.) infesting daffodils in southern England in 1968-71, daily estimates of adult populations were made using a...

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Effects of experimental soil disturbance on revegetation by natives and exotics in coastal Californian meadows.

Published online: 23 Jul 1997

Authors: Kotanen, P. M.

Content type: Journal article

Journal title: Journal of Applied Ecology

Disturbance is widely believed to facilitate invasions by exotic plants, but is also important for the persistence of many native species. The results...

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