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Browsing Natural and Agricultural Sciences by Supervisor "Aveling, Terry A.S."
Now showing items 1-20 of 24
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(University of Pretoria, 2000)Please read the abstract in the dissertation.
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(University of Pretoria, 2006-02-22)A survey involving 71 farmers from rural communities in Mpumalanga, South Africa was conducted to gather information regarding the importance and utilisation of cowpea. Cowpea was rated third most important in contributing ...
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(University of Pretoria, 2008-08-05)Cowpea is a worldwide-distributed crop, and is important to the livelihood of poor people in developing countries. Cowpea is also susceptible to a wide range of pests and pathogens, which can cause damage to the crop at ...
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(University of Pretoria, 2008-08-13)Hydroponic production was initially explored as an alternative to field production due to the ease of plant growth control and the hopes of preventing the majority of disease causing agents known to be present in general ...
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(University of Pretoria, 2006-01-14)The damping-off and stem rot disease syndrome is harmful to many cultivated crops. Damping-off and stem rot caused by Sclerotium rolfsii Sacc. on cowpea results in yield losses with serious socio-economic implications. The ...
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(University of Pretoria, 2012-12-14)The avocado (Persea americana Mill.) is an economically important crop worldwide. The most important disease of avocado is Phytophthora root rot, which is caused by Phytophthora cinnamomi Rands. Currently, phosphonate trunk ...
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(University of Pretoria, 2011-03-15)Fungicides have been developed to protect plants against diseases and pests, which cause serious problems such as the loss of germination and vigour. The aim of this study was to test the germination and vigour of maize ...
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The effect of plant extracts on anthracnose of Phaseolus vulgaris L. and Vigna unguiculata (L.) Walp (University of Pretoria, 2012-12-14)Anthracnose is one of the serious diseases of cowpea (Vigna unguiculata L. Walp) and common bean (Phaseolus vulgaris L.) caused by the Colletotrichum fungi. The disease is prevalent is small holder farmers’ fields due to ...
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(University of Pretoria, 2013-06-28)Maize (Zea mays L.) is a cereal crop grown throughout the world. It plays an important role in the diet of millions of African people due to its high yields per hectare, its ease of cultivation and adaptability to different ...
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(University of Pretoria, 2014)Plant growth promoting rhizobacteria (PGPR) are bacteria that colonize the volume of soil surrounding plant roots (known as the rhizosphere) which, when in association with a suitable host plant, promote plant growth. The ...
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(University of Pretoria, 2011-05-24)In the current study potassium silicate (20.7% SiO2) induced a 100% inhibition of P. cinnamomi mycelial growth at all concentrations tested. Total inhibition for all fungi tested (Alternaria solani, Colletotrichum ...
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(University of Pretoria, 2008-08-06)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2008)Lettuce (Lactuca sativa L.) seedlings diseases caused by soilborne pathogens are characterised by root rot, stem rot and damping-off of the seedlings that can occur at any time during growth. Fusarium solani, Pythium ultimum ...
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(University of Pretoria, 2022)Successful tree species establishment depends on the quality of nursery-raised seedlings and good silvicultural practices such as appropriate site x species matching, site preparation, tending and tree protection. Commercial ...
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(University of Pretoria, 2003)Anthracnose of cowpea (Vigna unguiculata (L.) Walp) caused by Colletotrichum dematium (Pers. ex Fr) Grove has serious socio-economic implications. Subsistence farmers rely heavily on cowpea for protein and fodder; therefore, ...
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(University of Pretoria, 2007-02-27)Cassava (Manihot esculenta Crantz) is a basic staple food crop in Tanzania. Cassava mosaic disease (CMD) caused by cassava mosaic geminiviruses (CMGs) constitutes a major limiting factor to cassava production in the country. ...
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(University of Pretoria, 2005-05-18)Bambara groundnut (Vigna subterranea (L.) Verdc.) is a leguminous crop indigenous to Africa, which is grown by small-scale farmers. It is a protein rich legume crop, which is mostly grown to supply rural and urban poor ...
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(University of Pretoria, 2011-02-16)No abstract available.
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(University of Pretoria, 2006-06-05)Cowpea (Vigna unguiculata (L.) Walp is an indigenous food legume in Africa, which has great production potential, especially in areas with low agricultural resources. During surveys of cowpea fields in southern Africa, a ...
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(University of Pretoria, 2013-06-28)Sunflower (Helianthus annuus L.) is the most important oilseed crop in South Africa at present and is grown in all summer rainfall areas. Sunflower seed oil is preferred over soybean and rapeseed oil because of its high ...
Now showing items 1-20 of 24