Zobrazeno 1 - 10
of 148
pro vyhledávání: '"N.F.G. Rethman"'
Publikováno v:
African Journal of Range & Forage Science. 26:91-96
This study examined intraspecific variation in mineral composition and rumen degradability of Atriplex nummularia plants and the influence on selection preferences of sheep. Individual plants were categorised into high, medium and least preference gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac2bc4d7be9d24df713fb8cc0102fe9e
https://doi.org/10.2989/ajrfs.2009.26.2.8.851
https://doi.org/10.2989/ajrfs.2009.26.2.8.851
Publikováno v:
Animal Feed Science and Technology. 136:312-322
Two experiments were completed to determine the influence of season/year and species on forage quality of Indigofera accessions. In Experiment 1, leaf material was collected from five Indigofera species (i.e., I. amorphoides, I. arrecta, I. brevicaly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6489016773d423f3c183ad8f57381561
https://doi.org/10.1016/j.anifeedsci.2006.09.010
https://doi.org/10.1016/j.anifeedsci.2006.09.010
Publikováno v:
African Journal of Range and Forage Science; Vol 24, No 1 (2007); 25-34
The effects of moisture stress were evaluated in four Indigofera species (I. amorphoides, I. arrecta, I. coerulea and I. vicioides) using a pot experiment under glasshouse conditions. The aim was to examine the influence of moisture-deficit stress on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f2542ddf5bb382cb72a262ff8ac778f
https://doi.org/10.2989/102201107780178195
https://doi.org/10.2989/102201107780178195
Autor:
WN Mphinyane, N.F.G. Rethman
Publikováno v:
African Journal of Range & Forage Science. 23:147-151
Individual forage species were appraised in varying distances along transects radiating from the water points of the ranch and traditional cattle post management systems. Measurements of plant height were used to assess the degree of forage species u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e201f654dbc02d9694b88d8a23e5478b
https://doi.org/10.2989/10220110609485897
https://doi.org/10.2989/10220110609485897
Autor:
N.F.G. Rethman, G.N. Smit
Publikováno v:
Journal of Arid Environments. 44:41-59
The investigation was conducted on an area covered by a dense stand of Hardwickia mopane (Leguminosae: Caesalpinioideae). Seven plots (65×180 m) were subjected to different intensities of tree thinning, ranging from a totally cleared plot (0%) to pl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63e60c24ebef9927dd330ce0ffd530e4
https://doi.org/10.1006/jare.1999.0576
https://doi.org/10.1006/jare.1999.0576
Autor:
N.F.G. Rethman, G.N. Smit
Publikováno v:
South African Journal of Botany. 64:38-43
On an area covered by dense stands of Colophospermum mopane with little or no grass cover, ten sites were randomly selected. In the centre of each site, a core (monolith) of soil (2.0m×0.5m×1.0m deep) was excavated and removed in 5 layers of 200mm.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::423255918f060c0ab946ddceb0c2979e
https://doi.org/10.1016/s0254-6299(15)30825-5
https://doi.org/10.1016/s0254-6299(15)30825-5
Publikováno v:
African Journal of Range and Forage Science; Vol 13, No 2 (1996)
This review deals with issues including the determinants of vegetative growth of woody plants (soil water availability, water stress, soil nutrient availability, carbohydrate reserves, plant hormones, atmospheric CO2 concentration, tree age, competit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::379373deaa5494f0359b74bb2d1c647c
https://doi.org/10.1080/10220119.1996.9647902
https://doi.org/10.1080/10220119.1996.9647902
Autor:
C.C. de Witt, N.F.G. Rethman
Publikováno v:
African Journal of Range & Forage Science. 10:72-75
Whereas cultivation had a detrimental effect on the production of Eragrostis curvula established in broadcast stands, both manuring and mulching had beneficial effects. This effect may be ascribed largely to better moisture conditions achieved with m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::745810fc880f19b780245dd697f39162
https://doi.org/10.1080/10220119.1993.9638325
https://doi.org/10.1080/10220119.1993.9638325
Autor:
N.F.G. Rethman, G.N. Smit
Publikováno v:
Journal of the Grassland Society of Southern Africa. 9:76-82
Eight camps, grazed annually during different seasons by steers, were surveyed. Herbaceous species were grouped into Decreaser and Increaser categories according to their reaction to grazing. The Increaser IIa (light overgrazing) and IIb (moderate ov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58cf2ceb7445392e021b43d7a09b6753
https://doi.org/10.1080/02566702.1992.9648303
https://doi.org/10.1080/02566702.1992.9648303
Publikováno v:
Journal of the Grassland Society of Southern Africa. 8:189-192
A technique to quantify available above‐ground phytomass of grass tufts in defoliation studies is described. Highly significant correlations were found between tuft volume and above‐ground phytomass in eighteen out of twenty‐two species that we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d0c542c170193c227ad39db0593c769
https://doi.org/10.1080/02566702.1991.9648289
https://doi.org/10.1080/02566702.1991.9648289