Rangeland Ecology & Management
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- Library Collection RecordBooysen (1967) proposed a number of terms and definitions for grazing and grazing management in South Africa. Additional terms and definitions describing the intensity of farming activities in…Publication Date 1973
- Africa
- Library Collection RecordA possible technique for the determination of browse utilization, without any prior measurements, is described. A high correlation (r = 0,8563) exists between twig diameter and total twig mass (twig…Publication Date 1973
- Africa
- Library Collection RecordThe inability of farmers of the Northern Cape to obtain adequate seed supplies of Anthephora pubescens is hampering their attempts to use this grass for veld reclamation. At the Vaalharts…Publication Date 1973
- Africa
- Library Collection RecordThe productional and morphological reaction of Cenchrus ciliaris cv. Molopo was studied over a period of one year under greenhouse conditions. The results indicate a great flexibility in the…Publication Date 1973
- Africa
- Library Collection RecordThe apparent optimum levels of macronutrients in ppm as determined for Cenchrus ciliaris cv. Molopo in sand culture, are: N?140, P?31, K?130, S?6, Ca?20 and Mg?5. The cultivar is most sensitive to…Publication Date 1973
- Africa
- Library Collection RecordInvestigations to determine whether frosted kikuyu could supply better quality foggage than natural pasturage in sourveld areas during the winter months revealed that this grass was characterized by…Publication Date 1973
- Africa
- Library Collection RecordMajor earthworks often expose sloped areas where soil conditions are unfavourable for grass growth. Because of the excessive costs of protecting these relatively steep areas from erosion with…Publication Date 1973
- Africa
- Library Collection RecordThis article on the short?term effects of veld fertilization in the Bankenveld, deals with the effects of nitrogenous, phosphatic and potassic fertilization, and stocking rates on beef, mutton and…Publication Date 1973
- Africa
- Library Collection RecordThe short?term effects of veld fertilization, which are seldom measured, are important in an understanding of the botanical changes that take place and may determine the profitability of the…Publication Date 1973
- Africa
- Library Collection RecordA study of species selection by cattle under a system of controlled selective grazing using wheel?point surveys and fistulated animals has demonstrated that both techniques provide valuable…Publication Date 1973
- Africa
- Library Collection RecordData processing can be time?consuming when experiments with advanced designs are employed. This, coupled with a shortage of research workers, necessitates automation. It is suggested that with…Publication Date 1973
- Africa
- Library Collection RecordAs part of a programme to test the suitability of Stylosanthes spp. for Rhodesian conditions, plants of seven strains covering three species of this genus were grown at eight sites in Rhodesia. The…Publication Date 1973
- Africa
- Library Collection RecordThe effects of five levels of nitrogen, viz. 0, 125, 250, 375 and 500 kg N/ha, were compared on a tall Hyparrhenia community that had been reinforced with either star grass (Cynodon nlemfuensis…Publication Date 1973
- Africa
- Library Collection RecordA small plot trial to investigate the possibilities of directing changes in the botanical composition of fertilized veld by oversowing demonstrated the potential of this technique for the…Publication Date 1973
- Africa
- Library Collection RecordAnalysis has shown that economies in feed costs provide the dairyman with the best opportunity for increasing financial efficiency. The nutritional requirements of the cow have been accurately…Publication Date 1973
- Africa
- Library Collection RecordThe Gompertz curve applied to forage cumulative yields can be specified with three or more data points (yields at known times, including a possible zero yield at the start). Good correlations between…Publication Date 1973
- Africa
- Library Collection RecordA method is suggested whereby the annual production curves of pasture species can be used to assist in choosing species best suited to a particular farming enterprise, and to determine the area to be…Publication Date 1973
- Africa
- Library Collection RecordEarlier research on eradicating macchia (fynbos) vegetation on the Amatole Mountains showed that both the lowland and highland macchia communities were re?established from coppice growth and…Publication Date 1973
- Africa
- Library Collection RecordVarious techniques and chemical methods to eradicate A. karroo were compared. Foliar spraying with different concentrations of water soluble formulations of Tordon was undertaken and the…Publication Date 1973
- Africa
- Library Collection RecordDescription not available.Publication Date 1973
- Africa
- Library Collection RecordDescription not available.Publication Date 1973
- Africa
- Library Collection RecordDescription not available.Publication Date 1973
- Africa
- Library Collection Record
2423 Acknowledgements
Abstract not available.Publication Date 1973- Africa
- Library Collection RecordThe environment of the highveld of south-central Africa is such that most grasslands are only temporary and the spread of trees into grassland--[`]bush encroachment'--is only checked by periodic…Publication Date 1973
- grasslands
- management
- indigenous encroaching species
- fire
- biological control
- cattle
- goats
- Africa
- Library Collection RecordA model for estimating soil water content on native rangeland was tested at Sidney, Montana. Based on the Penman combination method for estimating potential ET, the model includes factors to account…Publication Date 1973
- modelling
- soils
- rangeland
- plant production
- management
- Africa
- Library Collection RecordDescription not available.Publication Date 1972
- Africa
- Library Collection RecordA simple technique is described by which it is possible to collect information on the utilization of different grass species by means of point surveys. This method enables the relative acceptability…Publication Date 1972
- Africa
- Library Collection RecordAlthough an adequate knowledge of growth patterns and defoliation effects in perennial grasses is a prerequisite for the rational use of veld and pastures for animal production, our knowledge of this…Publication Date 1972
- Africa
- Library Collection RecordDormancy of the caryopsis of Themeda triandra Forsk was shown to be broken by the addition oàboron to the germination media. This effect was specific to boron, as no response was observed with…Publication Date 1972
- Africa
- Library Collection RecordVolume measurements of plant organs are not commonly used in the analysis of plant growth. Volume is, however, a useful, non?destructive measure of plant size and is particularly suitable for plants…Publication Date 1972
- Africa
- Library Collection RecordPaspalum vaginatum Sw. pastures were established on soils which had been denuded and physically degraded by over?irrigation with an industrial effluent containing a high concentration of Na2SO4. The…Publication Date 1972
- Africa
- Library Collection RecordThe effects of five years of application of N, P and K fertilizers at three levels, and of agricultural lime at two levels, on the herbage yield of Eragrostis curvula are discussed. The experiment…Publication Date 1972
- Africa
- Library Collection RecordAnnual herbage yields of grasses grown on sandy soils on Henderson Research Station seldom exccecîf 10 000 kg/ha dry matter, while on heavy clay soils yields of 18 000 kg/ha are consistently…Publication Date 1972
- Africa
- Library Collection RecordA review is given of published and unpublished data on the grass species, Anthephora pubescen.? Nees, with particular reference to preliminary studies conducted in the Molopo area.Publication Date 1972
- Africa
- Library Collection RecordA glass?house study on two Oxisols revealed a marked response by trudan (Sorghum sudanense) to phosphate (P) placement. Plant response to water?soluble forms of P (superphosphate and superphosphate…Publication Date 1972
- Africa
- Library Collection RecordThe objects of the Association, which was established in 1954, are to multiply and certify seed of improved cultivars of grasses and legumes released by Government Research Stations. Certification is…Publication Date 1972
- Africa
- Library Collection RecordThe results of the first field trials with two relatively new pasture legumes, Trifolium hirtum and T. cherleri, introduced in 1966, arc presented. The main aspects dealt with are adaptability to dry…Publication Date 1972
- Africa
- Library Collection RecordMalawi is a tropical country with a strongly seasonal rainfall distribution pattern. The major livestock nutrition problem is the dry season (May to November) protein deficit which results in…Publication Date 1972
- Africa
- Library Collection RecordAn account is given of the performance and potential of various tropical legumes when grown in different sub?tropical environments in Natal and Zululand. The legumes Stylo (Stylosanthes guyanensis)…Publication Date 1972
- Africa
- Library Collection RecordThe feasibility of establishing perennial forage legumes in veld has been investigated at Grasslands Research Station, Marandellas. Of the species tested, Stylosanthes guyanensis (stylo) appeared…Publication Date 1972
- Africa
- Library Collection RecordForty?one populations in twenty?two species of highveld grasses were grown in pots of soil fertilized with solutions for comparing ammonium and nitrate nutrition. Cotton, tomato, cereal crops and…Publication Date 1972
- Africa
- Library Collection RecordA map of the Republic of South Africa is presented in which the area is sub?divided into regions, zones and grassland?use units on the basis of the suitability for various intensities of grassland…Publication Date 1972
- Africa
- Library Collection RecordAn attempt is made to elucidate the very slow progress made with improved pastures in South. Africa. It is postulated that this disappointing progress has been due mainly to an overrating of the…Publication Date 1972
- Africa
- Library Collection RecordThe Pasture Scientist, is primarily concerned with maximizing the productivity of pastoral lands. In conducting his research and expressing the results of his work he has not always appreciated that…Publication Date 1972
- Africa
- Library Collection RecordAn investigation was conducted to determine whether goats could control bush regrowth and re?infestation after initial bush clearing. A dense stand of A. karroo was chopped and the regrowth…Publication Date 1972
- Africa
- Library Collection RecordOverstocking has for long been blamed for the deterioration of South African grasslands and, in the Tall Grassveld of Natal, it certainly leads to a rapid deterioration of both herbage production and…Publication Date 1972
- Africa
- Library Collection RecordGrazing habits were determined by analysis of rumina from slaughtered Springbok and sheep whore Springbok grazed together with Merino sheep in False Upper Karoo and together with Dorper sheep in…Publication Date 1972
- Africa
- Library Collection RecordAnimal deaths caused by Pachystigma pygmaeum have reached considerable proportions (reportedly over 70% on some farms) in the Western Transvaal portion of the Bankenveld in some years. In order to…Publication Date 1972
- Africa
- Library Collection RecordAn investigation was conducted in the Eastern Cape sweetveld to determine the effect of frequency of burning, extended sparing and controlled grazing on the establishment of seedlings of A. karroo.…Publication Date 1972
- Africa
- Library Collection RecordSoil fertility with special reference to nitrogen can have an overriding influence on secondary succession.Publication Date 1972
- Africa
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