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Digitale Medien

The effect of controlling bracken [Pteridium aquilinum (L.) Kuhn] on pasture production (1979)

Davies, G. E. ; NEWBOULD, P. ; BAILLIE, G. J.

Oxford, UK : Blackwell Publishing Ltd

Grass and forage science 34 (1979), S. 0

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ISSN: 1365-2494

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft

Notizen: The outcome of spraying two bracken-infested hill sites in July with asulam at the commercial rate of 4·5 kg a.i. per ha was a 98% reduction in frond numbers which persisted for the following 3 years. Broad-leaved grasses, Agrostis tenuis, Agrostis canina and Poa pratensis, were susceptible to asulam and were severely reduced at both sites while fine-leaved grasses, Festuca ovina and Deschampsia flexuosa, were resistant. Over a period of 3 years after spray application the original bare ground under the bracken canopy and that produced by the effects of asulam was recolonized by the recovery of the broad-leaved grasses and an increase in the cover of herbs. The latter also increased on the unsprayed control areas.A favourable aspect and an abundance of the productive broad-leaved grasses appeared to be the main factors which determined the amount of increase in herbage yield observed following spray treatment. One such area gave a herbage DM yield of 3039 kg ha-1 during the growing season which was 47% greater than the control while an area with a less favourable aspect and dominated by the less productive fine-leaved grasses gave a herbage yield of 2069 kg ha-1 which was only 18% greater than the control.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1365-2494.1979.tb01463.x

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Digitale Medien

Allergic reactions to laboratory animals (1976)

TAYLOR, GEOFFREY ; DAVIES, G. E. ; ALTOUNYAN, R. E. C. ; [weitere]

[s.l.] : Nature Publishing Group

Nature 260 (1976), S. 280-280

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] SIR-There is a growing concern about allergic reactions in laboratory workers who handle animals but little factual evidence is available. The British Society for Allergy and Clinical Immunology appointed a working party to investigate this subject and here we report preliminary findings, which ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/260280a0

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Digitale Medien

Inhibitory Action of Ethyl Mercaptan on Intracellular Tubercle Bacilli (1958)

DAVIES, G. E. ; DRIVER, G. W.

[s.l.] : Nature Publishing Group

Nature 182 (1958), S. 664-665

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Four cover-slip preparations from each treatment were stained at intervals of 1, 3, 5 and 7 days and 200 monocytes were examined on each slide and classified as containing 0, 1-10, 11-20, and more than 20 bacteria respectively. The activity of an inhibitory compound can be seen most conveniently ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/182664b0

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