Now showing items 131-140 of 141
An investigation to determine the critical habitat requirements of the breeding Blue Swallow Hirundo atrocaerulea Sundevall.
This study investigated the critical habitat requirements of breeding Blue Swallows Hirundo atrocaerulea Sundevall, in KwaZulu-Natal, South Africa. Blue Swallows, as a 'flagship species' of the KwaZulu-Natal endemic ...
Evaluation of recirculating hydroponic systems for eucalyptus cutting production.
In South Africa, Eucalyptus grandis and hybrids of this genus are planted over 196000 ha of Mondi Forests land. The temperate and cold tolerant species (E. grandis, and E. grandis X E. nitens) occupy 142000 ha and the ...
Towards marker assisted selection for nematode resistance in soybean.
Meloidogyne javanica is the most widely spread nematode pest on soybean in South Africa. Only a few registered cultivars have some resistance to this nematode and there is an urgent need for an efficient breeding programme ...
Characterisation and role of sugarcane invertase with special reference to neutral invertase.
The relationship between extractable invertase activities and sucrose accumulation in the sugarcane (Saccharum spp. hybrids) culm and in vivo invertase mediated sucrose hydrolysis was investigated to determine the significance ...
The use of various soil ameliorants and indigenous grasses, in the rehabilitation of soil from open cast coal mines in Mpumalanga, South Africa.
A series of pot trials were undertaken to test the growth of indigenous grasses (Themeda triandra and Cynodon dactylon) on mine capping soil, treated with various soil ameliorants. The capping soils were obtained from open ...
Grape fruit juice improves glycemic index and up-regulates expression of hepatic organic cation transporter protein (OCTI) in the rat
Abstract available in PDF file.
The performance and rooting of eucalyptus grandis x nitens cuttings.
Hybrid clones of Eucalyptus grandis and E. nitens (GN) have consistently been shown to be suitable for planting in cold, dry, marginal plantation sites, where they exhibit high yields and superior pulp properties. However, ...
Influence of drought or elephant on the dynamics of key woodland species in a semiarid African savanna.
Extensive drought - and elephant-related dieback of Colophospermum mopane and Acacia tortitis, respectively, offered an opportunity for increasing understanding of the causes of drought-related patch dieback, the factors ...
Soil, herbaceous and woody responses to different methods of bush control in a mesic eastern Cape savanna.
Bush encroachment is a major problem for the savannas supporting livestock in the Eastern Cape. Farmers employ chemical poisoning and mechanical clearing of woody vegetation to improve grass production. This thesis ...
Effects of herbivores, fire and harvesting on the population dynamics of Acacia drepanolobium sjoestedt in Laikipia, Kenya.
Effects of herbivory, fire, and tree harvesting on Acacia drepanolobium were studied using plant population dynamics as the philosophical basis of research. Specifically, growth rates, chrono-sequence of re-growth, biomass ...