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  1. The effects of N-source, shading and root zone cooling on two <em>Disa</em> hybrids

    The effects of N-source, shading and root zone cooling on two Disa hybrids

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D. Pienaar --- Department of Agronomy, Republic of South Africa N. J.J. Combrink --- Department of Agronomy, Republic of South Africa
    Although the Disa genus contains more than 130 species, the most commonly grown is Disa unifiora and its hybrids. The evergreen Disas are indigenous to South Africa and have great potential for marketing as cut flowers or pot plants but...
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  2. An analytical-numerical approach in the calculation of photovoltaic module parameters operating under partial shaded conditions

    An analytical-numerical approach in the calculation of photovoltaic module parameters operating under partial shaded conditions

    Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abdouramani Dadjé --- Department of Renewable Energy, National Advanced School of Engineering of Maroua, Cameroon Noël Djongyang --- Department of Renewable Energy, National Advanced School of Engineering of Maroua, Cameroon Réné Tchinda --- LISIE, Fotso Victor University Institute of Technology, Cameroon
    The aim of this work is to determine the parameters and characteristics of a PV module in case of partial shading conditions. Both numerical and analytical methods are used in order to attain this objective. The iterative method namely Newton-Raphson...
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  3. Maize–Cassava Intercropping: An Effort to Increase Food and Feed Security and Incomes in Coastal Lowland Kenya

    Maize–Cassava Intercropping: An Effort to Increase Food and Feed Security and Incomes in Coastal Lowland Kenya

    Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: KK Lewa --- Kenya Agricultural and Livestock Research Organisation, Kenya WS Chivatsi --- Kenya Agricultural and Livestock Research Organisation, Kenya HM Saha --- Pwani University, Kenya RW Muinga --- Kenya Agricultural and Livestock Research Organisation, Kenya
    The study was carried out at the Kenya Agricultural and Livestock Research Organisation (KALRO) Centre at Mtwapa to assess the effect of shade on the productivity of a maize–cassava intercropping system and on the contribution of the intercropping system to...
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  4. Evaluating the effects and benefits of cover crops in citrus orchards: a review

    Evaluating the effects and benefits of cover crops in citrus orchards: a review

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sibongiseni Silwana --- ARC Infruitec-Nietvoorbij, South Africa Azwimbavhi Reckson Mulidzi --- ARC Infruitec-Nietvoorbij, South Africa Nebo Jovanovic --- University of the Western Cape, South Africa
    Cover crops are used in sustainable agricultural practices to improve soil quality and minimise the effect of climate change, water restrictions and drought. The South African citrus industry produces and exports a diverse range of citrus fruits; however, knowledge of...
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