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Effects of aqueous extracts from Artemisia afra parts and soil on seed germination and early seedling development in selected plant species
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.A. Hansen-Quartey --- Department of Agronomy, Republic of South Africa K. Nyamapfene --- , Republic of South Africa S.A. Materechera --- School of Agriculture, Republic of South AfricaAqueous extracts from leaves, stems, roots of the aromatic shrub Artemisia afra and soil on which Artemisia was grown, were used to investigate their inhibitory effects on germination and seedling development of maize (Zea mays), bean (Phaseolus vulgaris) and ryegrass... -
Sensitivity of Meloidogyne incognita second-stage juvenile hatch, motility and viability to pure cucurbitacins and cucurbitacin-containing phytonematicides
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Zakheleni P Dube --- Green Biotechnologies Research Centre, South Africa Phatu W Mashela --- Green Biotechnologies Research Centre, South Africa Dirk de Waele --- Green Biotechnologies Research Centre, South AfricaPrevious claims suggested that pure active ingredients from botanicals were less effective in pest management than their fermented crude-extracts. The objective of this study was to compare the toxicity of pure (98%) cucurbitacin A and B on nematode bioactivities with... -
Bioprospecting for active compounds: impact of milling, extract fractions and freeze-drying on targeted terpene compounds of Helichrysum odoratissimum (L.) Sweet
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Neliswa A. Matrose --- Agricultural Research Council (ARC) Infruitec-Nietvoorbij, South Africa Zinash A. Belay --- Agricultural Research Council (ARC) Infruitec-Nietvoorbij, South Africa Obikeze Kenechukwu --- University of the Western Cape, South Africa Lucky Mokwena --- Stellenbosch University, South Africa Oluwafemi James Caleb --- Stellenbosch University, South AfricaThis study investigated the effect of processing and freeze-drying on targeted volatile compounds (terpenes) of Helichrysum odoratissimum (L.) Sweet. Air-dried plant material was processed to obtain: (i) roughly ground leaves and stems (RGMHO); (ii) finely ground leaves and stems (FGMHO);...