Rangeland Ecology & Management
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Displaying 2501 - 2550 of 2604 results
- Library Collection RecordThe seasonal production of herbage by Tall. Grassveld declined with increased frequency of cutting in summer. Even a single summer cutting treatment reduced yields compared with no summer cutting.…Publication Date 1970
- Africa
- Library Collection RecordThe utilisation of spared sour veld poses practical problems. As a result of the development of high, level protein or nitrogen supplements it has however become possible to efficiently graze spared…Publication Date 1970
- Africa
- Library Collection RecordFire has been a factor of the environment in Africa since time immemorial and it is often caused by natural agencies such as lightning. It is maintained that there is much prejudice against veld…Publication Date 1970
- Africa
- Library Collection RecordAlthough it has become standard practice in Southern Africa to recommend grazing systems based on a maximum of five camps, there are indications that the use of multicamp layouts, employing a greater…Publication Date 1970
- Africa
- Library Collection Record
2505 Opening address
Description not available.Publication Date 1970- Africa
- Library Collection RecordThe grazing behaviour and forage preferences of blesbok on the Van Riebeek Nature Reserve near Pretoria are described. Species composition of the grass component of this grassland vegetation as well…Publication Date 1969
- Africa
- Library Collection RecordThe design and development of an efficient sod?seeder for the Ngongoni Veld of Natal is described.Publication Date 1969
- Africa
- Library Collection RecordA statistically?planned veld reclamation experiment is being carried out in an area of the Sweet Bushveld of Transvaal which, in normal years, receives an average annual rainfall of 475 mm (19 inches…Publication Date 1969
- Africa
- Library Collection RecordPrevious research had shown that the introduction of stylo (Stylosanthes guyanensis) into veld brought about a considerable increase in herbage production and an improvement in herbage quality. In…Publication Date 1969
- Africa
- Library Collection RecordA brief survey of existing methods of milk production in the Republic of South Africa is made, together with an appreciation of the role and importance of established pastures in relation to these.…Publication Date 1969
- Africa
- Library Collection RecordThe conventional systems of veld management have a number of shortcomings, the main one being that the period of absence from grazing during the growing period is normally too short. This is due to…Publication Date 1969
- Africa
- Library Collection RecordThere is a lack of conclusive experimental evidence, in terms of animal production, to substantiate some of the generally accepted ?basic principles? of veld management in the Republic of South…Publication Date 1969
- Africa
- Library Collection RecordThe widespread deterioration of veld in South Africa necessitates an analysis of the reasons for this serious state of affairs. Although approximately 34 per cent of farms have the facilities to…Publication Date 1969
- Africa
- Library Collection RecordThe resting and grazing components of grazing management cycles as practised in South Africa are evaluated from the points of view of objective and effect. While the desirability of resting for…Publication Date 1969
- Africa
- Library Collection RecordVegetation in the Kroonstad area was sampled by means of a stratified random distribution of 235 4mx4m quadrats within physiographic?physiognomic categories as determined and delineated on aerial…Publication Date 1969
- Africa
- Library Collection RecordFour field stand tables for collecting data for the ordination of species and stands in Mopani Veld are described. The type of data and their manner of collection is indicated. It is important that…Publication Date 1969
- Africa
- Library Collection RecordThe main role of vegetation classification in agricultural land utilization is for the planning and management of vegetated areas. For farm planning, rapid, observationally?based methods are most…Publication Date 1969
- Africa
- Library Collection RecordAn intensive survey was carried out in Sweet Bushveld (savanna) to study drought damage to the trees and large shrubs in a Combretum apiculatum community. In general, the seventy of damage was less…Publication Date 1969
- Africa
- Library Collection RecordThe growth patterns of a Tall Grassveld sward measured with an inclined point and by clipping and weighing were dominated by moisture conditions except in winter when temperature was limiting. The…Publication Date 1969
- Africa
- Library Collection RecordTropical?subtropical grasses have shown a wide range of response to photoperiod. Some of the response patterns which they exhibit are extremely complex and often seem unrelated to the conditions to…Publication Date 1969
- Africa
- Library Collection RecordThe light?proof box method was used to measure the potential vigour of cocksfoot and lucerne plants which had previously been subjected to different cutting frequencies. The yields of etiolated…Publication Date 1969
- Africa
- Library Collection RecordIncreasing the frequency of clipping over a 12 week period resulted in decreasing root and stubble weight at the end of the 12 week period. During the regrowth period, following the clipping…Publication Date 1969
- Africa
- Library Collection RecordIn intact plants C14?assimilates were translocated from the treated leaf on the primary tiller to young leaves on that tiller, to secondary tillers, and also to the roots. Plants defoliated after…Publication Date 1969
- Africa
- Library Collection RecordPresidential AddressPublication Date 1969
- Afrikaans
- Africa
- Library Collection Record
2525 Opening address
Description not available.Publication Date 1969- Africa
- Library Collection RecordAristida junciformis (Ngongoni) is a pioneer grass which encroaches rapidly into mismanaged veld in much of Natal. This grass, as well as Themeda triandra (Redgrass) were examined over a 10 year…Publication Date 1968
- Africa
- Library Collection RecordPasture Science at South African Universities owes its origin to early realization of the vital role of vegetation management in soil conservation programs. Being a study of the principles and…Publication Date 1968
- Africa
- Library Collection RecordOne of the ways in which grasses respond to varying conditions is by adjusting the growth rates of their different component parts relative to their overall growth rate. When plants are grown in…Publication Date 1968
- Africa
- Library Collection RecordIn a large?scale experiment a dense stand of A. karroo was effectively killed by a basal bark application of 2,4,5?T at a concentration of 1.5 per cent acid equivalent in paraffin. There was no…Publication Date 1968
- Africa
- Library Collection RecordThis speculative paper based on overseas research and preliminary investigations at Dohne indicates that there is considerable scope for establishing lucerne with the aid of a companion crop, or…Publication Date 1968
- Africa
- Library Collection RecordGrassland problems in South Africa are reviewed and the suggestion made that a Pasture Research Institute should be established forthwith to serve South Africa. An holistic approach is needed whereby…Publication Date 1968
- Africa
- Library Collection RecordThe term vlei can be applied to most natural, low?lying, wet or damp areas in South Africa which may correspond with such categories as swamp, reedswamp, marsh and fen, but excluding pans and bogs.…Publication Date 1968
- Africa
- Library Collection RecordResults of sodseeding experiments have indicated that, provided adequate attention is given to the lime and fertilizer requirements, lucerne and white and red clovers can be successfully established…Publication Date 1968
- Africa
- Library Collection RecordThe problem of moisture control in pot experiments is discussed and a technique whereby pots are periodically watered to field moisture capacity by weighing is described. Discussions on soil…Publication Date 1968
- Africa
- Library Collection RecordA factorial veld fertilization experiment with three levels of phosphorus (0, 200 and 400 lb superphosphate per morgen per annum) and four levels of nitrogenous fertilizer (0, 200, 400 and 600 lb…Publication Date 1968
- Africa
- Library Collection RecordEragrostis curvula in pots was cut every 2, 3, 4, 6, or 12 weeks, for 12 weeks. Regrowth and the recovery of total available carbohydrates (TAC) in the next 7 weeks was measured weekly. The regrowth…Publication Date 1968
- Africa
- Library Collection RecordThe amount and distribution of lignin in three grass species was determined. Two climax species, Themeda triandra and Cymbopogon plurinodis and one pioneer species, Eragrostis lehmanniana were used…Publication Date 1968
- Africa
- Library Collection RecordSome 3½ million acres of dry savannah in Southern Matabeleland are in an advanced stage of deterioration. The major agricultural economy at present is livestock production based on unrestricted and…Publication Date 1968
- Africa
- Library Collection RecordThe time of defoliation exercised a significant influence on both the production of the sward and the regrowth potential of Themeda triandra in the season subsequent to treatment. In the spring…Publication Date 1968
- Africa
- Library Collection RecordThe performances of grass and grass/legume swards at three levels of nitrogen were compared under irrigation over a three?year period. The swards were grazed by dairy cows and the influence of…Publication Date 1968
- Africa
- Library Collection RecordTrials were conducted where ground material of Tarchonanthus camphoratus, Grewia flava and Terminalia sericea, supplemented with molasses and in some treatments with maize meal and/or urea, were fed…Publication Date 1968
- Africa
- Library Collection RecordLivestock production in the Swaziland Middleveld is limited by inadequate sources of good quality forage. Experiments were carried out to determine whether tropical pastures could help overcome the…Publication Date 1968
- Africa
- Library Collection RecordThe relationship between the breaking tension of the leaves of several indigenous grasses and various possible physical and chemical determinants of this property was examined by means of a multiple…Publication Date 1968
- Africa
- Library Collection RecordA study of the tensile properties of the leaves of ten indigenous grasses as measured in terms of their breaking force and their breaking tension has shown that grasses differ from one another in…Publication Date 1968
- Africa
- Library Collection RecordThe design and construction of a simple and inexpensive tensilimeter for measuring the tensile properties of grass leaves is described. The instrument was found to give reliable results and was used…Publication Date 1968
- Africa
- Library Collection RecordA relatively homogenous area of grassland was sampled by means of 2204 systematically place ½m2 quadrats for the presence or absence of all vascular plants this data was processed by the method of…Publication Date 1968
- Africa
- Library Collection RecordEcology embraces the study of the structure and function of eco?systems. Seven fields of ecology may be distinguished viz. systems, production, phytosociological and physiological ecology, and aut?,…Publication Date 1968
- Africa
- Library Collection RecordOn the Transvaal Highveld studies were made of the response of Eragrostis curvula to applications of nitrogenous fertilizers. In one series of experiments nitrogen dressings were applied annually to…Publication Date 1968
- Africa
- Library Collection RecordDescription not available.Publication Date 1968
- Africa
- Library Collection Record
2550 Presidential address
Description not available.Publication Date 1968- Africa