http://hdl.handle.net/123456789/759 Mon, 13 Apr 2026 12:21:10 GMT 2026-04-13T12:21:10Z http://hdl.handle.net/123456789/1270 Induced Mutation in Sweet Potato aimed at Improved Quality and Drought Adaptation Malebana, M.E Wed, 01 Jan 2014 00:00:00 GMT http://hdl.handle.net/123456789/1270 2014-01-01T00:00:00Z http://hdl.handle.net/123456789/1269 Efficacy of Selected Rhizobacteria for Growth Promotion of Maize and Suppression of Fusarium Root and Crown Rot in South Africa Breedt, G In the study Plant Growth Pr0moting Rhizobacteria (PGPR)strains were identified that had demonstrated plant growth enhancement capabilities, not only under greenhouse conditions, but also under field conditions. These strains appear to have commercial potential as biofertilisers. This is becoming increasingly important in the context of the global emphasis on more environmentally friendly agricultural practices. By demonstrating significant increases of maize yield in the field after seed treatment with selected PGPR strains, the current study provided additional evidence for the potential of PGPR application in the context of a more sustainable agricultural system. Sun, 01 Feb 2015 00:00:00 GMT http://hdl.handle.net/123456789/1269 2015-02-01T00:00:00Z http://hdl.handle.net/123456789/767 The Effect of Long-Term Fixed Seasonal Rotational Grazing on the Vegetation of the Sourish Mixed Bushveld Limpopo Department of Agriculture; Dr. Jordaan, J.J.; de Lange, A. L. The study was conducted at the Towoomba Research Station, situated in the Sourish Mixed of the Limpopo Province, South Africa. Changes in the herbaceous component were studied over a sixty five year period under different long-term seasonal rotational grazing treatments. Four grazing systems were involved, namely a one camp system (continuous grazing), a two camp systems, of which one camp is grazed annual1y during winter and the other during spring, summer and autumn, a two-camp system, of which one camp is grazed annual1y during late winter to late summer and the other from late summer to late winter and a three camp system, of which one camp is grazed annually during spring, one during summer and one during autumn and winter. The vegetation of the different camps was surveyed more or less on a ten-yearly basis. Camps that received no summer rest were in a much poorer condition and had lower animal production than camps that received summer rest. A camp that was grazed only during winter was in the best condition but was over rested and had become moribund. Autumn plus winter grazing seemed to have no bad effects on the grass component, while spring grazing only also led to good veld condition and high animal production. Grazing during mid-winter to mid-summer or mid-summer to mid-winter produced the best results overall in terms of veld condition and animal performance. Depending on grazing treatments, tree numbers increased at different rates in different camps, indicating that bush thickening was a phenomenon which occurred naturally, irrespective of rest or grazing treatments that were involved. The rates of encroachment were determined by the intensity of the grazing treatments that were applied Wed, 14 Nov 2012 00:00:00 GMT http://hdl.handle.net/123456789/767 2012-11-14T00:00:00Z http://hdl.handle.net/123456789/766 Evaluation of Fertilizer Application in Relation to Farm Specific Soil Potential for Different Crops at Nandoni: A Preliminary Survey Limpopo Department of Agriculture; Petja, B.M; Mashego, S; Maluleke, W; Nkoana, R.A; Lekalakala, R.G.; Ramugondo, R.R. In this study the aim was to assess fertilizer application in communal lands with consideration of the given soil potential. This study came about owing to the damaging effects of improper management of fertilizer application, in particular Nitrogen, on the ecological balance. Further the importance of fertilizers in agricultural production and likely productivity of which it contributes significantly to the sustenance and livelihoods of the rural communities. The research approach employed was Participatory Rural Appraisal (PRA) inconjuction with questionnaires to gather data to address the research questions posed, which are What is the general approach for application of fertilizers? Is the application of fertilizers considering site specific soil characteristics? Are the farmers conscious of environmental limitations when applying fertilizers? The most common fertilizer application approach used in the study area was broadcasting, followed by spot application which could be considered as a site specific fertilization method. This is due to the fertilizer being applied ‘directly’ on each plant. A small portion of farmers using fertilizers were found to be aware of the environmental effects of fertilizers. Wed, 14 Nov 2012 00:00:00 GMT http://hdl.handle.net/123456789/766 2012-11-14T00:00:00Z