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Browsing Plant Production and Soil Science by Type "Thesis"
Now showing items 1-20 of 78
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(University of Pretoria, 2017)The hybrid combination between Eucalyptus grandis and Eucalyptus urophylla plays a significant role in the production of pulp in the South African Forestry Industry. Superior clones of this hybrid combination have been ...
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(University of Pretoria, 2017)This study was conducted to better understand the usefulness of water footprint (WF) information for vegetable crops produced on a water-stressed aquifer in South Africa. Different methodologies were investigated in a ...
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(University of Pretoria, 2005-07-26)Morphological and anatomical studies demonstrated the root formation characteristics of sweet potato. The presence and importance of preformed root primordia is recorded for the first time. On the vines root primordia are ...
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(University of Pretoria, 2011-06-27)No information is available on the role of allelopathy in crop rotation systems of the Western Cape Province of South Africa, where more than 100 000 ha are under threat from herbicide-resistant rye grass. A study which ...
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(University of Pretoria, 2022)The thesis titled ‘Araucaria (Araucaria araucana) canker disease in Chile: etiology and fungal diversity’ considered a serious disease that has recently emerged on Araucaria araucana, an iconic conifer species endemic to ...
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(University of Pretoria, 2007-12-20)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2017)Forests play an important role in climate-change management, particularly at rural community level. At the same time, forests are essential resources for human welfare and an important part of the landscape. In addition ...
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(University of Pretoria, 2011-09-28)Cases of atrazine damage to maize, and occasional reports of excessive residue persistence that caused injury to susceptible following crops, prompted research on factors which influence the bioactivity and persistence of ...
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(University of Pretoria, 2007-02-08)The potential of Indigofera species as forage and/or cover crops for semi-arid and arid environments was investigated in several experiments conducted on the Hatfield Experimental Farm in Pretoria, South Africa. Dormancy ...
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(University of Pretoria, 2010-10-07)Fungal diseases of trees are serious impediments to forest expansion and productivity. While the adverse effects of diseases of non-native plantation forest trees are increasingly recognized in Africa, the health of native ...
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(University of Pretoria, 2007-02-15)Objective of Research The interest in crop modelling started since the introduction and popularisation of computer technology, which facilitated the dynamic simulation of complex natural systems. In particular, crop growth ...
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(University of Pretoria, 2009-04-07)Many agricultural fields that have received long-term applications of P often contain levels of P exceeding those required for optimal crop production. Knowledge of the effect of the P remaining in the soil (residual effect) ...
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(University of Pretoria, 1985)This study extends the work on the comparative stem and leaf anatomy of the southern African species of Eugenia presented by the author as an M.Sc. thesis in 1978. Additional sources of potential taxonomic evidence were ...
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(University of Pretoria, 2014)Current irrigation scheduling technologies are limited to refilling the root zone based on measured or predicted amount of water stored within the root zone. This needs measurement of soil-water status and specifying soil ...
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(University of Pretoria, 2008-08-11)Experiments were carried out with the objectives of developing propagation protocols for Uapaca kirkiana and Pappea capensis tree species of southern Africa, and evaluating the graft compatibility within U. Kirkiana tree ...
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(University of Pretoria, 2010-06-07)The leaching of nitrogen (N) and phosphorus (P) from the rootzone of cropping systems is a major contributor of non-point source pollution resulting in deterioration of fresh water supplies. An escalating world population ...
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(University of Pretoria, 2010-07-05)Management-induced degradation of soil chemical and microbial quality is one of the most pressing concerns and a considerable threat to the sustainability of agroecosystems. However, information on this important issue is ...
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(University of Pretoria, 2003-03-18)Management-induced degradation of soil chemical and microbial quality is one of the most pressing concerns and a considerable threat to the sustainability of agroecosystems. However, information on this important issue is ...
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(University of Pretoria, 2006-10-17)In a study to investigate the fate of the applied P in soils, a red-sandy clayey soil (Ferric Luvisols) from Rustenburg (high P fixing) and a red-sandy loam soil (Ferric Acrisols) from Loskop (low P fixing) were used. ...
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(University of Pretoria, 2006-01-14)Although mango (Mangifera indica L.) has been studied for many years, numerous problems still elude researchers. The objectives of the current trials were to study the effects of some cultural practices (fruit thinning, ...
Now showing items 1-20 of 78