The herbage yield of five main types of grassland in the Willem Pretorius Game Reserve was measured by clipping five 0,5 m2 quadrats taken at random within three 10 m2 enclosures in each grassland type at approximately monthly intervals from October 1975 to September 1976. The material was separated into green, standing dead and litter fractions, in each of which nitrogen was measured. Available grazing (sum of green and standing dead) and herbage yield in the whole Reserve were estimated by weighting for the areas of each grassland type. Nitrogen uptakes were compared with expectation from nitrogen mineralized in incubated surface soils sampled from each enclosure before the first pasture measurement.
Journal articles from the Grassland Society of Southern Africa (GSSA) African Journal of Range and Forage Science as well as related articles and reports from throughout the southern African region.