Comparison of the rehabilitative effects of mechanical and chemical methods of bush control on degraded highland savanna rangelands in Namibia select="/dri:document/dri:meta/dri:pageMeta/dri:metadata[@element='title']/node()"/>

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dc.contributor.advisor en_US
dc.contributor.advisor en_US
dc.contributor.author Kahumba, Absalom en_US
dc.date.accessioned 2014-02-07T14:08:15Z
dc.date.available 2014-02-07T14:08:15Z
dc.date.issued 2010 en_US
dc.identifier.uri http://hdl.handle.net/11070/507
dc.description A thesis submitted in partial fulfilment of the requirements for the Degree of Master of Science in Rangeland Resources and Management at the University of Namibia en_US
dc.description.abstract The study was carried out at Spes Bona 207 farm in Hochfeld district, and Neudamm 63 farm in the Khomas Hochland district,Highland savanna in Namibia. The objective of this study was to investigate the rehabilitative effects of mechanical and chemical methods of bush control of an invasive bush species Acacia mellifera for achieving long term rehabilitation of a degraded highland savanna rangelands in Namibia. At farm Spes Bona, three belt transects (50 x 5m2) were laid in chemical treatments and another three belt transects (50 x 5m2) were laid in mechanical treatments. Moreover, the same method was used in the control experiment. At Neudamm farm, a 200 x 100m2 plot with 495 Acacia mellifera treated stumps were divided into 3 sub-plots for each treatment (mechanical, chemical and control). Each sub-plot was further divided into 3 replicates. In each replicate, stumps were randomly assigned key-tags with sequential numbers from 1-55 per sub-plot, for assessment purpose. At Spes Bona farm, the grass tuft density of species Aristida congesta, Cenchrus ciliaris, Chloris vigata, Eragrostis rigidior, Eragrostis viscosa, Melinis repens and Melinis villosum was significantly higher (P0.05) in chemical and mechanical than in control treatment. Similarly, the total grass density had greater values (P0.05) high in chemical (36.1 ± 9.6a), and mechanical (31.7 ± 9.7a) than in control (25.7±9.0b) treatment. The soil condition did not show significant difference (P0.05) between treatments. Total density of woody plants was significantly greater (P0.05) in the control than chemical and mechanical treatments. At Neudamm farm exmortality of stumps was significantly higher (P0.001) in chemical than in mechanical and control treatments. On the contrary, coppicing of stumps was significantly lower (P0.001) in the chemical method than in the control and mechanical treatments. Tuft greater values outside the canopy than underneath the canopy en_US
dc.format.extent xi, 69 p en_US
dc.language.iso eng en_US
dc.source.uri en_US
dc.source.uri http://wwwisis.unam.na/theses/kahumba2010.pdf en_US
dc.subject Range management Namibia en_US
dc.subject Biological conservation en_US
dc.subject Agrobiodiversity Namibia en_US
dc.title Comparison of the rehabilitative effects of mechanical and chemical methods of bush control on degraded highland savanna rangelands in Namibia en_US
dc.type Thesis en_US
dc.identifier.isis F004-199299999999999 en_US
dc.description.degree Universirty of Namibia en_US
dc.description.degree Master of Science in Rangeland Resources and Management en_US
dc.description.status en_US
dc.masterFileNumber 3710 en_US


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