Articles by Author: T Jansen

Search results for T Jansen

We found 48 results for you
  1. Effect of herbicides on survival of rhizobia and nodulation of peas, groundnuts and lucerne

    Effect of herbicides on survival of rhizobia and nodulation of peas, groundnuts and lucerne

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Thirteen herbicides were tested for toxicity against strains of Rhizobium used in South African legume inoculants for lucerne, clover, soybeans, groundnuts and lupins, respectively. Each of alachlor, bromoxynil, proprop, metolachlor, naptalam + dinoseb, and trifluralin inhibited at least two of...
  2. AN IDENTIFICATION KEY TO THE WATER MITE FAMILIES OF THE ETHIOPIAN REGION

    AN IDENTIFICATION KEY TO THE WATER MITE FAMILIES OF THE ETHIOPIAN REGION

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    The general external morphology of water mites is described. The superfamilies with their characters are listed. An illustrated key to the Ethiopian families is included.
  3. Development of a sequence characterized amplified region (SCAR) marker for the identification of the potato cultivars Astrid and Mnandi

    Development of a sequence characterized amplified region (SCAR) marker for the identification of the potato cultivars Astrid and Mnandi

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Astrid and Mnandi are two closely related potato cultivars of commercial importance in Southern Africa. Random amplified polymorphic DNA (RAPD) markers were screened and a sequence characterized amplified region (SCAR) marker was developed to distinguish between these two cultivars since...
  4. Microbial community function and structure on coal mine discard under rehabilitation

    Microbial community function and structure on coal mine discard under rehabilitation

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The rehabilitation of coal mine discard is problematic, especially since the lack of measures to evaluate the success of rehabilitation in terms of the self-sustainability of soil ecosystems established on these sites. In this study, the potential for using microbial...
  5. Relationships between soil buffer capacity and selected soil properties in a resource-poor farming area in the Mpumalanga Province of South Africa

    Relationships between soil buffer capacity and selected soil properties in a resource-poor farming area in the Mpumalanga Province of South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    In this study, the soil buffer capacity (soil BC) was measured for 80 topsoil samples of the most dominant soil forms in a small-scale farming area. Soils used in the study ranged from weakly to strongly buffered, with soil BC...
  6. Assessing the potential soil acidification risk under dryland agriculture in the Mlondozi district in the Mpumalanga Province of South Africa

    Assessing the potential soil acidification risk under dryland agriculture in the Mlondozi district in the Mpumalanga Province of South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The farming community in the Mlondozi district in the Mpumalanga Province of South Africa has been part of a government liming intervention with the objective to ameliorate the serious soil acidity problem in the district. The current study was undertaken...
  7. ON MAP INDUCED SHAPINGS

    ON MAP INDUCED SHAPINGS

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    Let Y be a paracompact Hausdorff space. We characterize those shape morphisms from X to Y which are induced by continuous maps from X to Y.
  8. Preface

    Preface

    Item type: Journal Article • Journal: Quaestiones Mathematicae
  9. Document design

    Document design

    Item type: Journal Article • Journal: South African Journal of Linguistics
    Die onderwerp van hierdie artikel is 'n redelik nuwe dissipline in die veld van taal en kommunikasie, naamlik teksontwerp. Enersyds is dit die strewe van teksontwerp om te voldoen aan die kommunikasiebehoeftes van indivi-due en organisasies in die samelewing van...