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Effects of different climatic and soil factors at different locations on chemical composition of bush tea (Athrixia phylicoides DC.)Nchabeleng, Lehlohonolo January 2012 (has links)
Thesis (M.Sc. (Horticulture)) --University of Limpopo, 2012 / Refer to document / the National Research Foundation
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Effects of nitrogen, phosphorus and potassium nutrition on total antioxidant contents of Bush Tea (athrixia phylicoides DC.) leavesMogotlane, Ishiba Daniel January 2007 (has links)
Thesis (M.Sc. (Horticulture)) --University of Limpopo, 2007 / Bush tea (Athrixia phylicoides DC) has been used for many years by the people of South Africa for medicinal purposes. The herbs was only harvested from the wild, therefore data on the effects of mineral nutrition on total antioxidant activity had not been established. The objective of this study was to determine the seasonal effect of nitrogen (N), phosphorus (P) and potassium (K) nutrition on total antioxidant activity (TAA) in cultivated bush tea leaves. Treatments consisted of 0, 100, 200, 300, 400 or 500 kgha-1 N, P or K in a randomized complete block design with four replications under 50 % shade nets. Three (N, P and K) parallel trials were conducted per season (autumn, winter, spring and summer). TAA was determined using 2,2-diphenyl-1-picrylhydrazyl-hydrate (DPPH) method and analyzed in a spectrophotometer. Results of this study demonstrated that regardless of season, the application of N, P and K fertilizers increased quadratically levels of TAA in bush tea with most of the increase occurring between 0 and 300 N, 300 P and 200 K kgha-1. Therefore, for improved total antioxidant content in bush tea leaves, 300 N, 300 P and 200 K kgha-1 N are recommended. / National Research Foundation (NRF), Agricultural Research Council(ARC-LNR)
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Econonic analysis of value addition on tea a case study of the Mukumbani/Tshivhase Tea Estate, Vhembe District, LimpopoBokosi, James 02 February 2015 (has links)
MSCAEC / Department of Agricultural Economics and Agribusiness
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