Browsing Masters Degrees (Crop Science) by Title
Now showing items 7-26 of 69
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Chemical mutagenesis of wheat for herbicide resistance.
(2012)Weed infestation is one of the yield limiting factors in crop production. Weeds have negative effect on crop growth and productivity due to competition, allelopathy or hosting other harmful organisms. For large-scale wheat ... -
Closure of the Umlazi landfill : meeting statutory requirements for engineering and plant cover.
(2008)This study investigated the establishment of vegetation cover planted in plug and seedling form in the closure phases of the Umlazi Landfill. It also investigated the various facets of the closure process of the Umlazi ... -
Comparative responses of fodder and grain teff (Eragrostis tef (Zucc.) Trotter) cultivars to spatial, temporal and nutritional management.
(2002)Teff has its origin in Ethiopia as grain crop, while in South Africa it is primarily a forage crop for hay and recently as summer grazing pasture. The response of teff herbage and grain production to planting date, growth ... -
Conserving soil moisture for soybean growth as a climate change adaptation strategy.
(2017)Low crop productivity among smallholder farmers in rural areas is mainly associated with low and variable rainfall as well as factors such as soil fertility. Climate change projections show that rainfall is going to become ... -
Controlled environment determination of nitrogen uptake and its efficient utilisation by selected South African sugarcane varieties.
Increasing nitrogen use efficiency (NUE) of sugarcane (Saccharum officinarum L.) has a potential of reducing farmers input costs associated with nitrogen (N) fertilizers. Although there is evidence for some genetic variability ... -
Distribution and severity of herbicide resistance in the Republic of South Africa.
(2001)No abstract available. -
Effect of ABR effluent irrigation on Swiss chard (Beta vulgaris subsp. cicla) growth and nutrient leaching.
The Decentralised Waste Water Treatment System (DEWATS) is used in countries such as India and Indonesia for the treatment of human waste. The waste is passed through a series of baffles where it is anaerobically degraded, ... -
The effect of daylength and temperature on growth and 'onset of bulbing' in tropical cultivars of onion.
(2005)Onions are widely produced within the tropics, but little scientific research has been done specifically on the Eritrean cultivars, like Hagaz Red 1 and 2 (HR I, and HR 2). Many onion cultivars are limited in their range ... -
The effect of different furrow irrigation regimes on infiltration and sugarcane (Saccharum officinarum L.) yield at Ubombo Swaziland.
(2003)In surface irrigation, the soil serves as a medium for infiltration and for conveying water from the upstream to the downstream end of a field. Soil infiltration characteristics are therefore extremely important for ... -
The effect of ethylmethanesulfonate on morphological characteristics and seed quality development of (Centrapalus pauciflorus var.ethiopica Willd.)
(2015)Vernonia (Centrapalus pauciflorus Willd.) belongs to the Asteraceae family (Compositae). The crop can produce epoxidized vernolic acid oil that can be used by industries to produce products such as paints.Crop production ... -
Effect of irrigation water regimes applied via subsurface drippers on soil water distribution and on sugarcane (Saccharum officinarum L.) growth.
(2002)The effects of different water regimes on sugarcane growth were investigated for subsurface drip irrigation over three seasons. Arbitrary factors (0.5, 0.75, 1.0 and 1.2 of ETc), were applied to adjust the daily estimates ... -
Effect of simulating flooding pattern on nitrogen management in rice (Oryza sativa L.) production.
(2010)Flooding cycle in wetland rice (Oryza sativa L.) production systems is often subject to seasonal and cultural variations which may affect the availability and uptake of nitrogen in different ways. These factors may more ... -
Effect of smoke solution on performance of Pinus elliottii and P. taeda seed.
(2008)In recent years research has shown that exposing seed to smoke or smoke solutions results in increased germination of some, but not all the species tested. Tests showed that exposing seeds of some commercial crops to smoke ... -
Effect of water stress imposed at tillering, flowering and grain filling in irrigated wheat (Triticum Aestivum L.) genotypes.
(2017)Wheat is one of the most important crops grown in South Africa. However, its production is threatened by the current drought periods the country has been experiencing. This includes a decline in the production of irrigated ... -
The effects of chlormequat chloride and ethephon on selected small grain cereals in South Africa.
(2006)Lodging poses a serious limitation to successful economic production of small grain cereals and can lead to extensive yield and quality losses. Plant growth regulators (PGR's) that reduce plant height and lodging have ... -
Effects of different levels of competition by Cyperus esculentus L. on the growth and surcrose yield of irrigated sugarcane (Saccharum officinarum L.) in Northern Swaziland.
(1995)The study was undertaken to evaluate the interference of Cyperus esculentus (L.) with growth and quality of irrigated sugarcane (Saccharum officinarum (L.)) in northern Swaziland, and to quantify or characterise yield ... -
The effects of urine and urine-separated plant nutrient sources on growth and biomass production of perennial ryegrass (Lolium perenne. L)
(2015)Urine contains plant essential nutrients, which may pose pollution problems if disposed of in the environment. Struvite is a concentrated phosphorus fertilizer produced by precipitation of Magnesium Ammonium Phosphate after ... -
Ethylmethanesulfonate mutagenesis in selected Vernonia galamensis variety ethiopica lines.
(2012)The overriding objective of this study was to induce genetic variation in Vernonia (Vernonia galamensis variety ethiopica) using ethylmethanesulfonate (EMS) and select mutants for subsequent selective breeding. Vernonia ... -
Evaluating the agronomic performance of selected yam varieties.
Food security ranks among South Africa’s top ten priorities. While there is a range of crops, both major and minor, that are currently being exploited and explored for food security within South Africa, there is a need to ... -
Evaluating water use efficiency of maize in different intercropping systems with legumes.
(2016)Abstract available in PDF file.