Relevant bibliographies by topics / Maize cultivation – South Africa

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Academic literature on the topic 'Maize cultivation – South Africa'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Maize cultivation – South Africa"

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Mufungizi, A. A., W. Musakwa, and T. Gumbo. "A LAND SUITABILITY ANALYSIS OF THE VHEMBE DISTRICT, SOUTH AFRICA, THE CASE OF MAIZE AND SORGHUM." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B3-2020 (August 21, 2020): 1023–30. http://dx.doi.org/10.5194/isprs-archives-xliii-b3-2020-1023-2020.

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Abstract. Sustainable development goals (SDGs) 1 and 2 stand for “No poverty” and “Zero hunger” respectively. Achieving these goals cannot be separated from promoting sustainable agriculture and ensuring livelihoods, especially for rural communities. This study sought to determine the suitability of land for the cultivation of maize and sorghum crops in Vhembe District, South Africa. The study applied the Analytical Hierarchy Process (AHP) and the Weighted Linear Combination (WLC), multi-criteria decision-making techniques, for criteria weights calculations and suitability maps calculations respectively within a Geographic Information System (GIS) environment. Six criteria were used; Soil pH, Soil Structure, Rainfall, Maximum Temperature, Minimum Temperature and Elevation. A consistency ratio (CR) of 0.035 was obtained for maize criteria weights and 0.036 for sorghum criteria weights. The results revealed that only limited portions of the whole district are highly suitable for the cultivation of Maize with 15.01% and Sorghum with 19.39 of the land arable for farming. This suggests lower maize and sorghum crops yields in the district and the paper recommends more cultivation of other drought resistant crops other than maize and sorghum.
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van Antwerpen, T., S. A. McFarlane, G. F. Buchanan, D. N. Shepherd, D. P. Martin, E. P. Rybicki, and A. Varsani. "First Report of Maize streak virus Field Infection of Sugarcane in South Africa." Plant Disease 92, no. 6 (June 2008): 982. http://dx.doi.org/10.1094/pdis-92-6-0982a.

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Prior to the introduction of highly resistant sugarcane varieties, Sugarcane streak virus (SSV) caused serious sugar yield losses in southern Africa. Recently, sugarcane plants with streak symptoms have been identified across South Africa. Unlike the characteristic fine stippling and streaking of SSV, the symptoms resembled the broader, elongated chlorotic lesions commonly observed in wild grasses infected with the related Maize streak virus (MSV). Importantly, these symptoms have been reported on a newly released South African sugarcane cultivar, N44 (resistant to SSV). Following a first report from southern KwaZulu-Natal, South Africa in February 2006, a survey in May 2007 identified numerous plants with identical symptoms in fields of cvs. N44, N27, and N36 across the entire South African sugarcane-growing region. Between 0.04 and 1.6% of the plants in infected fields had streak symptoms. Wild grass species with similar streaking symptoms were observed adjacent to one of these fields. Potted stalks collected from infected N44 plants germinated in a glasshouse exhibited streak symptoms within 10 days. Virus genomes were isolated and sequenced from a symptomatic N44 and Urochloa plantaginea plants collected from one of the surveyed fields (1). Phylogenetic analysis determined that while viruses from both plants closely resembled the South African maize-adapted MSV strain, MSV-A4 (>98.5% genome-wide sequence identity), they were only very distantly related to SSV (~65% identity; MSV-Sasri_S: EU152254; MSV-Sasri_G: EU152255). To our knowledge, this is the first confirmed report of maize-adapted MSV variants in sugarcane. In the 1980s, “MSV strains” were serologically identified in sugarcane plants exhibiting streak symptoms in Reunion and Mauritius, but these were not genetically characterized (2,3). There have been no subsequent reports on the impact of such MSV infections on sugarcane cultivation on these islands. Also, at least five MSV strains have now been described, only one of which, MSV-A, causes significant disease in maize and it is unknown which strain was responsible for sugarcane diseases on these islands in the 1980s (2,3). MSV-A infections could have serious implications for the South African sugar industry. Besides yield losses in infected plants due to stunting and reduced photosynthesis, the virus could be considerably more difficult to control than it is in maize because sugarcane is vegetatively propagated and individual plants remain within fields for years rather than months. Moreover, there is a large MSV-A reservoir in maize and other grasses everywhere sugarcane is grown in southern Africa. References: (1) B. E. Owor et al. J Virol. Methods 140:100, 2007. (2) M. S. Pinner and P. G. Markham. J. Gen. Virol. 71:1635, 1990. (3) M. S. Pinner et al. Plant Pathol. 37:74, 1998.
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Widgren, Mats, Tim Maggs, Anna Plikk, Jan Risberg, Maria H. Schoeman, and Lars-Ove Westerberg. "Precolonial Agricultural Terracing in Bokoni, South Africa: Typology and an Exploratory Excavation." Journal of African Archaeology 14, no. 1 (November 1, 2016): 33–53. http://dx.doi.org/10.3213/2191-5784-10281.

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Earlier work on the terraced settlements of the Bokoni area (16th to 19th century, Mpumalanga province, South Africa) focussed on the homesteads, their contents, layout and chronology. This paper suggests a terminology and typology of agrarian structures in Bokoni in order to improve comparative approaches in Africa and beyond. The typology and an excavation of the terracing permit possible preliminary conclusions relevant for the further analysis of the terracing and stone-walling in Bokoni. The terracing developed incrementally, whereby cultivation, stone-clearing and terracing were intermixed processes. This is supported both by the organic content in a section of a terrace and by a phytolith analysis. The phytolith analysis furthermore indicated that maize was cultivated on the terraces, but this should be seen as a pilot study only, and presence of maize in Bokoni must be tested with other archaeobotanical methods.
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Acevedo-Siaca, Liana, and Peter D. Goldsmith. "Soy-Maize Crop Rotations in Sub-Saharan Africa: A Literature Review." International Journal of Agronomy 2020 (August 27, 2020): 1–14. http://dx.doi.org/10.1155/2020/8833872.

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Empirical evidence shows complementarity between maize and soybean as a sustained agricultural system across North and South America as well as Eastern Europe. The potential application to sub-Saharan Africa motivates this literature review. Maize is one of the most important crops on the African subcontinent, accounting for over half of daily caloric intake in some regions. However, continuous cropping of maize has led to extensive degradation of soil and decrease in crop productivity and endangers household food and nutritional security. The cultivation of soybean holds great promise in improving agricultural systems in sub-Saharan Africa. Introducing soy into rotation with maize is a method to diversify diets, better nutritional status, reduce abiotic and biotic stresses, and improve soil fertility, while enhancing crop productivity and generating more income for farmers. However, limited access to extension services and other sources of technical support constrains adoption of the more complex rotation cropping system involving a new crop, soybean. Rotating soybean with maize too challenges farmers as there is not a specific prescription that can guide farmers operating across Africa’s diverse agroecological environments. Finally, soybean is an input-intensive crop requiring significant investment at planting, which may not allow small holders with limited resources and no access to credit.
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Oluwaseun Samuel, Oduniyi, Antwi Micheal Akwasi, and Tekana Sibongile Sylvia. "Prioritization on cultivation and climate change adaptation techniques: a potential option in strengthening climate resilience in South Africa." Agronomía Colombiana 37, no. 1 (January 1, 2019): 62–72. http://dx.doi.org/10.15446/agron.colomb.v37n1.77545.

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Numerous challenges currently experienced in the world today stemmed from global scientific collaborations that rely mainly on the ecosystem. Impact of climate variability threatens food security and production especially among the rural farming households. The study was conducted in North West Province of South Africa, to identify climate change adaptation techniques and to analyze prioritization of farmers on cultivation, both in the past and present. A total number of 497 rural household maize farmers were selected through a stratified sampling method from two district municipalities. Descriptive statistics were used to compute the mean, frequency and percentages, while Wilcoxon sign rank test established farmers’ prioritization on cultivation. The results show different adaptation strategies used. On the other hand, Wilcoxon sign rank test showed a statistically significant difference (P<0.05) between the farmers prioritization on cultivation both in the past and present. The study recommends incorporation of conservation agricultural practices to the existing strategies.
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Akanwe Asiwe, Joseph Nwafor. "Yield and Economic Assessments of Five Cowpea Varieties in Cowpea-Maize Strip Intercropping in Limpopo Province, South Africa." International Journal of Agriculture and Biology 25, no. 01 (January 1, 2021): 27–32. http://dx.doi.org/10.17957/ijab/15.1634.

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Farmers‟ traditional cropping practice in Limpopo Province is to mix and broadcast crops at planting without definite row arrangement. Although this practice is very easy and cost-saving, it leads to low plant density, hinders farm input application, and results in low crop yields and poor return on investment. Strip intercropping, where crops are planted with definite row arrangement, reduces inter-species competition, optimises plant population, and increases crop yield. Five cowpea varieties i.e. „TVu 13464‟, „IT86D-1010‟, „Glenda‟, „IT82E-16‟ and „IT87K-499-35‟ and maize was grown under strip intercropping, monocropping, and mixed intercropping as a control during two seasons. During both years, significant interactions were obtained between the cowpea varieties and the cropping systems in most of the variables measured. Cowpea sown in the strip intercropping performed better compared those sown in mixed intercropping. Cowpea varieties „IT86D-1010‟, „IT82E-16‟ and „IT87K-499-35‟ harvested more grain yield under monocropping and strip intercropping than under mixed intercropping. The land equivalent ratio (LER) of strip intercropping during the two seasons ranged between 1.25 and 2.29 and was higher compared to mixed intercropping, which ranged between 0.50 and 1.32. In conclusion, cowpea varieties „IT86D-1010‟, „IT82E-16‟ and „IT87K-499-35‟ sown with maize as strip intercropping resulted more profits under intercropping systems and were recommended for cultivation by farmers in the Limpopo region with low rainfall. Moreover, grain yield, LER, and net profit achieved by strip intercropping was three-fold more than mixed intercropping. © 2021 Friends Science Publishers
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Skenjana, NL, and AJ Afolayan. "A documentation of plants used by rural small-scale farmers to control maize pests in the eastern cape province of South Africa." African Journal of Food, Agriculture, Nutrition and Development 21, no. 02 (March 24, 2021): 17643–55. http://dx.doi.org/10.18697/ajfand.97.18520.

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Maize(Zea mays L.)small-scale farmers in the rural areas of the Eastern Cape Province of South Africa are generally under-resourced, and as a result, their crops are vulnerable to pest attacks. The farmers often cannot afford farming implements and inputs, and tend to improvise with what is freely available in their surroundings. Regarding pests, farmers tend not to follow the conventional use of chemical insecticides and rather use alternative methods of control such as plant-based methods. Plant-based methods that are founded on formulations and plant combinations have been found to be eroding due to lack of documentation. This study sought to document the names of plants used in combinations and formulations and their preparation methods so that they can be further used to set a research agenda specific to affordable pest control methods for the Province. Surveys using the convenience and stratified purposive sampling techniques were conducted in selected rural areas of the Eastern Cape Province in order to investigate the plants, their combinations and formulations used by these farmers to control insect pests of maize. A total of 217 farmers were interviewed. Study protocols adhered to ethical standards set by the EasternCape Department of Rural Development and Agrarian Reform. Data were analysed using descriptive statistics, whereas percentages were calculated using Microsoft Excel (2010). Findings revealed that most of the plants used were from familiesSolanaceaeandAsteraceae. The most preferred plant was Chenopodiumambrosioides, a perennial herb from the family Chenopodiceae. Although, several arthropods were mentioned by farmers as pests of maize in their cultivation areas, the predominant targets of formulations and combinations were maize stalk borers. These insects were also cited as most troublesome. The common plant part used in combinations and formulations was the leaves. Thefindingsraisedtheneed for continuous scientific validation and documentation of indigenous pest control methods to bridge the generational gap and increase the range of their use.
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Mujuru, Nyarai M., and Ajuruchukwu Obi. "Effects of Cultivated Area on Smallholder Farm Profits and Food Security in Rural Communities of the Eastern Cape Province of South Africa." Sustainability 12, no. 8 (April 17, 2020): 3272. http://dx.doi.org/10.3390/su12083272.

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As rural poverty deepens over much of Sub-Saharan Africa, smallholder transformation has become more urgent than ever before. A majority of rural people derive their livelihoods from agriculture, hence the urgent need for transforming the sector. The South African government launched a comprehensive land reform programme at the dawn of democracy in the country on the assumption that constraints on land size would be eliminated to make room for a more inclusive agricultural economy. The present study sought to assess how cultivated area affects food security and the profits of maize and cabbage farmers. The purposive sampling technique was used for the selection of study sites, from which 158 irrigators and homestead gardeners were selected. The data were then subjected to analysis by defining a maximum likelihood estimator that combines the seemingly unrelated regression (SUR) and one-way error correction model, to determine the factors influencing food security and farm profits. The model revealed diverse relationships, suggesting that location, farm type and income were important variables in explaining food security. The area under cultivation was found to influence profits for both crops. Policies in favour of technology adoption, market access and input use would greatly incentivize farmers to cultivate larger plots of land.
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Akanwe Asiwe, Joseph Nwafor. "Performance and Economic Prospect of Pigeonpea Varieties in Pigeonpea-Maize Strip Intercropping in Limpopo Province." International Journal of Agriculture and Biology 25, no. 01 (January 1, 2021): 20–26. http://dx.doi.org/10.17957/ijab/15.1633.

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Pigeonpea is an important grain legume, and is traditionally intercropped with maize in West Africa and India. Small farmers in Limpopo Province, South Africa, who cultivate pigeonpea landraces under traditional mixed intercropping, experience the challenge of low productivity. Strip intercropping is a novel cropping system has greater efficiency and productivity in resource utilization when compared to mixed intercropping. Therefore, this study was conducted to evaluate the performance of improved pigeonpea varieties under a pigeonpea-maize strip intercropping system. Five pigeonpea varieties (ICEAP 001284, ICEAP 00604, ICEAP 87091, ICEAP 00661 and ICEAP 01101-2) were intercropped in maize as mixed and strip intercropping during the 2015–2016 and 2016/2017 cropping seasons while monocrops of both crops were also maintained as control. The trial for each season was replicated three times in a split plot design. During both seasons, ICEAP 001284 and ICEAP 00604 exhibited the shortest number of days to attain 50% flowering under strip intercropping and monocropping when compared to the remaining varieties. Higher significant (P < 0.05) grain yields (1726 kg ha-1, 1478 kg ha-1 and 858 kg ha-1 were obtained under strip intercropping for ICEAP 001284, ICEAP 01101-2 and ICEAP 00604, respectively during 2016/2017 than their respective grain yields during 2015/2016 season. Strip intercropping out-performed mixed intercropping with a higher land equivalent ratio and cash returns due to its ripple effect in the enhanced yield components. Among the five pigeonpea varieties, ICEAP 001284, ICEAP 00604 and ICEAP 01101-2, performed exceedingly well in their crop mixtures. In conclusion, the three pigeonpea varieties were selected for cultivation under strip intercropping. Strip intercropping exhibited greater efficiency in resource utilization and productivity over mixed intercropping in terms of grain yield, land equivalent ratio, net profit, and benefit-cost ratio. © 2021 Friends Science Publishers
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van Wyk, Deidré A. B., Rasheed Adeleke, Owen H. J. Rhode, Carlos C. Bezuidenhout, and Charlotte Mienie. "Ecological guild and enzyme activities of rhizosphere soil microbial communities associated with Bt-maize cultivation under field conditions in North West Province of South Africa." Journal of Basic Microbiology 57, no. 9 (July 21, 2017): 781–92. http://dx.doi.org/10.1002/jobm.201700043.

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Dissertations / Theses on the topic "Maize cultivation – South Africa"

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Kotey, Daniel Ashie. "Genetically modified (GM) maize cultivation by smallholders in the Eastern Cape Province of South Africa: Effects on target and non-target organisms and adoption challenges." Thesis, University of Fort Hare, 2017. http://hdl.handle.net/10353/5161.

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The use of genetically modified (GM) maize technology is subject to compliance with stewardship requirements and the adoption of specific management practices that promote the long-term effectiveness and environmental sustainability of the technology. For smallholders to comply with these requirements and adopt the desired management practices to ultimately benefit from the technology, they require information that creates awareness of the value of these requirements. To determine what information farmers receive about GM maize and how this information is disseminated to farmers, face to face interviews were conducted with 81 extension personnel and 210 smallhoder GM maize farmers in the Eastern Cape Province of South Africa. The effect of Bt maize introduction and management practices in smallholder maize agroecosystems in the Eastern Cape on Bt maize target [Busseola fusca (Fuller) (Lepidoptera: Noctuidae)] and non-target insect pests [Agrotis segetum (Denis & Schiffermüller) (Lepidoptera: Noctuidae), Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)] and a snail species, [Cornu aspersum (Müller) (Gastropoda: Helicidae)] was determined through laboratory, field and cage experiments. The effect of smallhoder farmers‟ GM maize cultivation practices on the profitability of GM maize technology was also determined through on-farm trials in different localities of the Eastern Cape identified as hot-spots for stem borer and weed infestation. Results of surveys indicated that extension personnel had a low level of awareness of GM maize technology stewardship requirements. GM maize technology was also largely disseminated to smallholder farmers through non-participatory approaches and print media sourced from GM seed companies. Although farmers had a high level of contact with extension services, they lacked access to information about GM maize technology. Smallholder farmers‟ level of awareness about GM maize and compliance with the requirement for the planting of non-Bt maize refuge areas adjacent to Bt maize was also very low. While Bt maize event (MON810) commonly cultivated by smallholder farmers in the Eastern Cape Province had a variable effect on A. segetum under laboratory conditions, it had no effect on the incidence of plants damaged by A. segetum and C. aspersum under field conditions. The incidence of H. armigera damage on Bt maize plants was however significantly affected by Bt maize. Populations of B. fusca collected from smallholder maize fields in the province were observed to be still highly susceptible to Bt maize. Results of on-farm evaluation of the profitability of GM maize revealed that stem borer pressure, growing conditions, input supplies and market access affect the productivity and profitability of GM maize cultivation. Challenges within the extension and advisory services of the Eastern Cape which can militate against smallholder farmers‟ ability to benefit from GM maize technology and sustain the long-term efficacy of the technology were identified during this study. Given these challenges and the fact that the cultivation of GM maize may not be profitable under typical smallholder maize cultivation conditions and management practices, dissemination approaches that provide farmers the opportunity to evaluate GM maize technology alongside alternate technologies under their conditions, may prove beneficial.
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Beyers, Andrea. "Ecological principles for honeybush (Cyclopia spp.) conservation and cultivation." Thesis, Nelson Mandela Metropolitan University, 2016. http://hdl.handle.net/10948/5723.

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Market demand for the fynbos-derived honeybush (Cyclopia spp.) tea is on the rise, and there is an urgent need for better conservation of wild Cyclopia populations and for a shift to sustainable cultivation. Rooibos is another popular fynbos product that underwent exponential market growth over the last two decades but this resulted in large-scale conversion of pristine mountain fynbos to intensively-used crop lands. Adopting a conservation agriculture approach in expanding indigenous products will help in conserving biodiversity and ecosystem processes in this global biodiversity hotspot. Conservation agriculture of indigenous fynbos products grown in the Cape Floristic Region (CFR) should follow five main principles in order to maximise biodiversity conservation alongside agriculture. These principles are: 1) maintain high diversity at all levels, 2) conserve soil structure and processes, 3) conserve and restore natural ecosystem processes, 4) promote ecosystem stability and self-perpetuation, and 5) maintain natural areas as sources of ecosystem components. Given the negative ecological consequences of the industrialisation of the rooibos industry, it would be in the interest of biodiversity conservation, and even of agriculture, to apply these principles to honeybush cultivation. In order to prevent further fynbos habitat loss, cultivation of honeybush could be catalysed on old fields rather than in ploughed or cleared fynbos. Here I compare germination, growth and survival of two species (Cyclopia intermedia E.Mey. and C. subternata Vogel) between different land use types (ploughed lands, old fields and intact fynbos) and treatments (cleared and uncleared) in the Langkloof, Eastern Cape, over one year. Plots of each land use type were subject to each of these two treatments, although the ploughed plot constituted only a cleared treatment. Growth was highest on ploughed land, while survival and growth were lowest in uncleared fynbos. Cleared fynbos had the lowest germination success in both species, with the other sites and treatments coming out roughly the same. These results show that although ploughed lands give highest yields, growth and survival on old fields without ploughing is comparable with that on ploughed lands and is therefore a feasible alternative. Understanding the recruitment dynamics of honeybush is imperative for adequate conservation of wild populations. Furthermore, understanding this ecological aspect of the genus will help in developing the honeybush industry as a sustainable, agroecological market that uses semi-natural populations for production. Although Cyclopia species are early-successional species that germinate after fire, recruitment of Cyclopia pubescens Eckl. & Zeyh. continues throughout the inter-fire period. Cyclopia pubescens populations near Port Elizabeth were described according to their age structure and plant densities to discern possible density-dependent recruitment effects. Results showed that dense stands for the most part do not support high post-fire recruitment. This gives insight into suitable planting densities for new or restore populations and into management guidelines for remnant populations of threatened species. This thesis highlights important issues facing the honeybush industry. Mainstreaming biodiversity conservation into honeybush production is achievable, given that the industry is still relatively young, but this will require further research and strong market leadership.
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Steyn, Paul-Pierre. "The ecophysiology of Gelidium Pristoides (Turner) Kuetzing : towards commercial cultivation." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/1117.

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The ecophysiology of the red alga Gelidium pristoides (Turner) Kuetzing was investigated in an effort to establish a technique for commercial cultivation. The seaweed is of commercial importance in South Africa where it is harvested from the intertidal zone rocky shores along the coast. It is dried and exported abroad for the extraction of agar. Yields and quality could be improved by cultivation in commercial systems. However, attempts at growing the seaweed in experimental systems have all ended in failure. This study aimed to describe the conditions in which the seaweed grows naturally; and investigate its physiological response to selected physical conditions in the laboratory in order to determine suitable conditions for mariculture. Ecological studies showed that G. pristoides grew above the spring low tide water level. The upper limit of the seaweed’s vertical distribution range, as well as its abundance, was largely dependent on wave exposure. The zone normally inhabited by G. pristoides was dominated by coralline turf in sheltered areas, while the abundance of G. pristoides increased towards more exposed rocky shore sites. The seaweed occurred among species such as Pattelid limpets and barnacles, but was usually the dominant macroalga in this zone, with coralline turf and encrusting algae being the only others. Physical conditions in the part of the intertidal zone inhabited by G. pristoides were highly variable. During low tide temperatures could vary by as much as 10°C within the three hours between tidal inundation of the seaweed population, while salinity varied by up to 9 ppt, and light intensity by as much as 800 μmol m-2 s-1. During these exposure periods the seaweed suffered up to 20% moisture loss. Laboratory experiments on the seaweed’s response to these conditions indicated that it was well adapted to such fluctuations. It had a broad salinity (20 and 40 ppt), and temperature tolerance range (18 to 24°C), with an o ptimum of temperature of 21°C for photosynthesis, while there was no difference in the photosynthetic rate of the alga within the 20 to 40 ppt salinity range. The alga had a low saturating irradiance (ca. 45 – 80 μmol m-2 s-1) equipping it well for photosynthesis in turbulent environments, with high light attenuation, but poorly to unattenuated light conditions. Exposure resulted in an initial increase in photosynthetic rate followed by a gradual decrease thereafter. pH drift experiments showed that low seawater pH, and associated increased carbon dioxide availability, resulted in an increase in photosynthetic rate. This response suggests that the seaweed has a high affinity for carbon dioxide, while the reduction in photosynthetic rate in response to bicarbonate use inhibition indicates that it also has the capacity for bicarbonate use. The high affinity of Gelidium pristoides for carbon dioxide as an inorganic carbon source appears to be the primary reason for the low abundance of the alga on sheltered rocky shore areas, and also explains the failure of the alga to grow in tank or open-water mariculture systems. Exposed rocky shores have experience heavy wave action, and the resultant aeration and mixing of nearshore waters increases the availability of carbon dioxide, which is considered a limiting resource. The absence of such mixing and aeration at sheltered site makes this less suitable habitat for G. pristoides. Periodic exposure also makes high levels of atmospheric carbon dioxide available from which the seaweed benefits. The traditional mariculture systems in which attempts have been made to cultivate the seaweed failed to satisfy either of the above conditions.
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Krugel, Louisa Jacoba. "White maize futures contracts in South Africa / Louisa Jacoba Krugel." Thesis, North-West University, 2003. http://hdl.handle.net/10394/340.

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Produsente van landboukommoditeite, veral in ontwikkelende lande, word blootgestel aan prysrisiko's. Markte vir landboukommoditeite in Suid-Afrika, soos in die res van die wêreld, is die afgelope aantal jare gekenmerk deur prosesse van deregulering. Die bemarkingsrade wat aanvanklik verantwoordelik was vir die bemarking van landbouprodukte, het ontbind en produsente van landbouprodukte moes nuwe metodes vind om hulle produkte te bemark. Een van die metodes wat gebruik word, is termynkontrakte. Witmielies en geelmielies is die twee landboukommoditeite wat in die grootste hoeveelhede geproduseer word in Suid-Afrika. Witmielies en geelmielies word as twee afsonderlike kommoditeite verhandel op die termynbeurs. Witmielies word hoofsaaklik aangewend vir menslike verbruik en geelmielies vir dierevoer. Hierdie studie fokus hoofsaaklik op witmielies. Die prys van mielies word beïnvloed deur veranderinge in die vraag daarna en aanbod daarvan. Faktore wat die vraag en aanbod van mielies beïnvloed is, onder andere, oesskattings, reënval, die wisselkoers en die pryse van mielies op die buitelandse mark, veral die markte in die VSA. In Suid-Afrika vorm die invoerpariteit en uitvoerpariteit 'n band waarbinne die prys van mielies varieer. Die doel van hierdie studie is om 'n regressievergelyking te konstrueer ten einde prys van die witmielietermynkontrakte te verklaar. Die regressie-analise word deur middel van 'n foutherstellende model met outoregressiewe foutterme behartig. Die regressie-analise slaag daarin om die prys van witmielietermynkontrakte te verklaar.
Thesis (M.Com. (Economics))--North-West University, Potchefstroom Campus, 2004.
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Khumalo, Teclah P. "Consumer acceptability and perceptions of maize meal in Giyani, South Africa." Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-06132008-123740.

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Brittle, Wendy. "The optimisation of laboratory cultivation in childhood mycobacterial disease in South Africa." Thesis, [S.l. : s.n.], 2009. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1071&context=td_cput.

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Vermeulen, Hester. "Genetically modified white maize in South Africa : consumer perceptions and market segmentation." Diss., Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-11222005-110807.

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Baloyi, Rebecca Tshilambilu. "Technical efficiency in maize production by small-scale farmers in Ga-Mothiba, Limpopo Province, South Africa." Thesis, University of Limpopo, 2011. http://hdl.handle.net/10386/1419.

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Thesis (M.Agric. (Agricultural Economics)) -- University of Limpopo
Maize is the most important cereal crop grown in South Africa. This crop is produced throughout the country under diverse environments. The study only focuses on the technical efficiency because it is an important subject in developing agriculture where resources are limited, but high population growth is very common. Technical efficiency is the ability of a farmer to obtain output from a given set of physical inputs. Farmers have a tendency of under and/or overutilising the factors of production. The main aim of this study was to analyse the technical efficiency of small-scale maize producers in Ga-Mothiba rural community of Limpopo Province. The objective of the study was to determine the level of technical efficiency of smallscale maize producers and to identify the socio-economic characteristics that influence technical efficiency of small-scale maize producers in Ga-Mothiba. Purposive and Snowball sampling techniques were used to collect primary data from 120 small-scale farmers. Cobb-Douglas production function was used to determine the level of technical efficiency and Logistic regression model was used to analyse the variables that have influence the technical efficiency of maize production. Cobb-Douglas results reveal that small-scale farmers in Ga-Mothiba are experiencing technical inefficiency in maize production due to the decreasing return to scale, which means they are over-utilising factors of production. Logistic regression results indicate that out of 13 variables included in the analysis as socio-economic factors, 10 of them (level of education, income of the household on monthly basis, farmer`s farming experience, farm size, cost of tractor hours, fertiliser application, purchased hybrid maize seeds, membership to farmers` organisation, is maize profitable) were found to be significant and 3 (gender, age and hired labour) are non-significant. However, farm size was found to be the most significant variable at 99% level, showing a positive relationship to smallscale maize producer`s technical efficiency. Therefore, it is recommended that government should do the on-farm training since farmers mainly depend on trial and error and farmers` should have access to enough arable land and tractor services. However, farmers need to be trained on matters relating to fertiliser application, on the amount of seeds a farmer should apply per ha, and the importance of using hybrid seed.
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Boucher, Kim Gillian. "The effect of pineapple cultivation on factors influencing soil erodibility in the Eastern Cape, South Africa." Thesis, Rhodes University, 1992. http://hdl.handle.net/10962/d1005502.

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The study examines the effect of ridged pineapple cultivation on factors influencing the soil erodibility of Glenrosa and Oakleaf soil forms in the Bathurst district of South Africa. A number of physical and chemical variables influencing soil erodibility are investigated, namely soil moisture, bulk density, porosity, infiltration rate, aggregate stability, shear strength, soil texture, soil structure, penetrability, organic carbon, pH and cation exchange capacity. These soil characteristics are examined in undisturbed soils under natural vegetation and compared to those on adjacent traffic areas, pineapple ridges and pineapple furrows. The results of the analyses between the four sample sites indicate that ridged cultivation of pineapples has a negative effect on factors influencing soil erodibility on the areas studied. The results of the analysis within each of the sample sites do not illustrate any clear relationships and thus depict the complexity and multiplicity of the soil erodibility phenomenon. A further study, augmenting the soil erodibility data with actual soil loss data, is recommended
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Sowunmi, Linda Ifeanyichukwu. "Nutritional value and cultivation requirements of Cleome Gynandra: a wild vegetable growing in the Eastern Cape Province, South Africa." Thesis, University of Fort Hare, 2015. http://hdl.handle.net/10353/2600.

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South Africa has wide ranges of plants among which are leafy vegetables growing in the wild. These wild vegetables have been reported to have high nutritive and medicinal potentials. Yet, there is still high prevalence of malnutrition and micronutrients deficiencies among the low income bracket of the population. Effective utilization of wild vegetables has been proposed as part of the solutions to address the problem of dietary deficiencies among the populace. Their importance is mainly as relish to accompany and complement starch based diets. They are also known to serve as supplements for food which have the potential to improve the health status of its consumers in many rural communities. Cleome gynandra L. (Capparaceae) is one of the underutilized species mentioned during asurvey conducted in Nkonkobe municipality of the Eastern Cape Province, South Africa. The plant is an erect annual herb with alternate, palmately compound leaves and its petals are white, pink or lilac. It grows as a weed in this part of the Province and is usually gathered from the wild for food and medicine. It is commonly found on wastes land, road sides and on grass lands. Therefore, this research work was designed to contribute to the possible domestication of this wild vegetable in order to explore the nutritive and therapeutic potentials which would broaden the food base in the Eastern Cape Province. The ultra-micromorphological features of plants have become an essential tool in proper identification and authentication of several plant species. In the light of this, the micromorphology of Cleome gynandra was examined to reveal the micro-morphological characters of the plantand to determine if micro and macro mineral elements are present using energy dispersive x-rays. The present study revealed the epidermal cells of the leaves to be asymmetric in shape with undulating cell walls having four subsidiary cells around the stomata. The leaves have anomocyctic stomata which are more distributed in the abaxial surface than the adaxial surface. The mean length and width of the guard cells in the abaxial surface are 0.09 ± 0.01 mm and 0.08 ± 0.01 mm respectively while that of adaxial surface are 0.1± 0.01 mm and 0.07 ± 0.01 mm respectively. The energy dispersive x-rays (EDXS) micro-analysis of the leaf revealed the presence of phosphorus, manganese, iron, calcium, sodium, magnesium, potassium and zinc as the major constituents of the crystal deposits present in the stomata pores and the mesophyll. C. gynandra was collected from the wild and analysed for its mineral and proximatecomposition using standard analytical methods. The plant showed high levels of sodium, iron, zinc, calcium and potassium while many other macro and micro minerals were moderately present. Amongst the proximate factors investigated, moisture content was found to be 82.1% while crude fibre and protein contents were 39.9 percent and 31.03 percent respectively. Vitamin C was also high (345.3 mg/100g). The anti-nutrients compositions revealed low concentrations of oxalate (7.4 ± 0.4) and phytate (0.6 ± 0.0) mg/100g. The study revealed high nutritive value of the species growing naturally from the wild. Interest in the phenolic compounds has greatly increased recently because these compounds have been implicated in suppressing the risk of degenerative diseases in humans. The pharmacological properties of plants may be related to their antioxidant capacities and hence there was need to investigate the antioxidant potential using aqueous, ethanolic and acetone extracts of different parts of C. gynandra. The quantities of phenols, flavonoids and flavonols were significantly higher (p < 0.05) in both aqueous and ethanol extracts of the leaf while the concentration of proanthocyanidins was higher in the aqueous stem extract compared to other plant parts. The aqueous extract of the different parts exhibited better ABTS, reducing power and NO radical scavenging abilities than ethanol extract.
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Books on the topic "Maize cultivation – South Africa"

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Rubey, Lawrence. The maize subsector in South Africa: Emerging policy issues. Mount Pleasant, Harare, Zimbabwe: Dept. of Agricultural Economics and Extension, Faculty of Agriculture, University of Zimbabwe, 1992.

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Cownie, P. J. Mielieraad: Makro en mikro, 1935-1985 : vyftig jaar diens aan die Suid-Afrikaanse mielie-, graansorghum- en bokwietbedrywe. Pretoria, RSA: Die Raad, 1986.

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Duncan, Graham. Grow bulbs: A guide to the cultivation and propagation of the bulbs of South Africa and neighbouring countries. 2nd ed. Cape Town: South African National Biodiversity Institute, 2010.

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Aheto, Denis Worlanyo. Implication analysis for biotechnology regulation and management in Africa: Baseline studies for assessment of potential effects of genetically modified maize (Zea mays L.) cultivation in Ghanaian agriculture. Frankfurt am Main: Peter Lang, 2009.

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The Unmilled Maize Research Group. The 2000 Import and Export Market for Unmilled Maize in South Africa (World Trade Report). 2nd ed. Icon Group International, 2001.

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Aheto, Denis Worlanyo. Implication Analysis for Biotechnology Regulation and Management in Africa: Baseline Studies for Assessment of Potential Effects of Genetically Modified Maize Cultivation in Ghanaian Agriculture. Lang GmbH, Internationaler Verlag der Wissenschaften, Peter, 2017.

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R. The Unmilled Cereals Excl, Rice, Barley The Unmilled Cereals Excluding Wheat, and Maize Research Group. The 2000 Import and Export Market for Unmilled Cereals Excluding Wheat, Rice, Barley and Maize in South Africa (World Trade Report). 2nd ed. Icon Group International, 2001.

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Chigumira, Gillian. Assessment of demand in agro-processing machinery in the SADC region: A case study of the maize-milling machinery value chain in South Africa and Zambia. UNU-WIDER, 2019. http://dx.doi.org/10.35188/unu-wider/2019/704-0.

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Walters, Dale. Chocolate Crisis. University Press of Florida, 2021. http://dx.doi.org/10.5744/florida/9781683401674.001.0001.

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Chocolate is the center of a massive global industry worth billions of dollars annually, yet its future in our modern world is currently under threat. Here, Dale Walters discusses the problems posed by plant diseases, pests, and climate change, looking at what these mean for the survival of the cacao tree. Walters takes readers to the origins of the cacao tree in the Amazon basin of South America, describing how ancient cultures used the beans produced by the plant, and follows the rise of chocolate as an international commodity over many centuries. He explains that most cacao is now grown on small family farms in Latin America, West Africa, and Indonesia, and that the crop is not easy to make a living from. Diseases such as frosty pod rot, witches’ broom, and swollen shoot, along with pests such as sap-sucking capsids, cocoa pod borers, and termites, cause substantial losses every year. Most alarmingly, cacao growers are beginning to experience the accelerating effects of global warming and deforestation. Projections suggest that cultivation in many of the world’s traditional cacao-growing regions might soon become impossible. Providing an up-to-date picture of the state of the cacao bean today, this book also includes a look at complex issues such as farmer poverty and child labor, and examines options for sustainable production amid a changing climate. Walters shows that the industry must tackle these problems in order to save this global cultural staple and to protect the people who make their livelihoods from producing it.
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Book chapters on the topic "Maize cultivation – South Africa"

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Mc Donald, Alexander H., Dirk De Waele, and Hendrika Fourie. "Nematode Pests of Maize and Other Cereal Crops." In Nematology in South Africa: A View from the 21st Century, 183–99. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-44210-5_8.

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du Preez, C. C., and M. E. du Toit. "Effect of cultivation on the nitrogen fertility of selected agro-ecosystems in South Africa." In Nitrogen Economy in Tropical Soils, 27–32. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-009-1706-4_3.

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du Toit, André S., and Marthinus A. Prinsloo. "El Niño-Southern Oscillation Effects on Maize Production in South Africa: A Preliminary Methodology Study." In Impacts of El Niño and Climate Variability on Agriculture, 77–86. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2015. http://dx.doi.org/10.2134/asaspecpub63.ch5.

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Koné, M., H. Konaré, M. Dicko, and F. Sissoko. "Taking Stock of Fertilization in the Cultivation of Maize, Millet/Sorghum, Cowpea, Rice and Cotton in Mali." In Improving the Profitability, Sustainability and Efficiency of Nutrients Through Site Specific Fertilizer Recommendations in West Africa Agro-Ecosystems, 209–20. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-58789-9_11.

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Saïdou, Aliou, I. Balogoun, E. L. Ahoton, A. M. Igué, S. Youl, G. Ezui, and A. Mando. "Fertilizer Recommendations for Maize Production in the South Sudan and Sudano-Guinean Zones of Benin." In Improving the Profitability, Sustainability and Efficiency of Nutrients Through Site Specific Fertilizer Recommendations in West Africa Agro-Ecosystems, 215–34. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-58792-9_13.

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Lunze, L., and M. Ngongo. "Potential Nitrogen Contribution of Climbing Bean to Subsequent Maize Crop in Rotation in South Kivu Province of Democratic Republic of Congo." In Innovations as Key to the Green Revolution in Africa, 677–81. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-2543-2_68.

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Serme, Idriss, Korodjouma Ouattara, Isabelle Orokya Traore, Souleymane Ouedraogo, Sansan Youl, Badiori Ouattara, Francois Lompo, P. Michel Sedogo, and Charles Wortmann. "Maize Response to Fertilizer on Ferralsol and Luvisol in the South Sudan Zone of Burkina Faso." In Improving the Profitability, Sustainability and Efficiency of Nutrients Through Site Specific Fertilizer Recommendations in West Africa Agro-Ecosystems, 195–214. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-58792-9_12.

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Anderson, R. J., A. J. Smit, and G. J. Levitt. "Upwelling and fish-factory waste as nitrogen sources for suspended cultivation of Gracilaria gracilis in Saldanha Bay, South Africa." In Sixteenth International Seaweed Symposium, 455–62. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4449-0_54.

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Durand, W. "Drought Adaptation Measures and Risk Tolerance of Commercial, Small-Scale and Subsistence Maize Farmers in the Free State and North West Province of South Africa." In Drought in Arid and Semi-Arid Regions, 143–65. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6636-5_8.

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"GM Maize in South Africa and Egypt." In Africa's Gene Revolution, 109–34. MQUP, 2019. http://dx.doi.org/10.2307/j.ctvr7fc75.9.

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Conference papers on the topic "Maize cultivation – South Africa"

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"Production Risks of Maize Cultivation in South India." In 6th International Conference on Advances in Engineering Sciences and Applied Mathematics. International Institute of Engineers, 2016. http://dx.doi.org/10.15242/iie.a1216028.

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"Potential Challenges of Cassava Cultivation in South Africa." In Nov. 18-19, 2019 Johannesburg (South Africa). Eminent Association of Pioneers, 2019. http://dx.doi.org/10.17758/eares8.eap1119136.

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Van der Berg, Johnnie. "The status or resistance of maize stem borers to Bt maize in South Africa." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.93640.

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Ayankoya, Kayode, Andre P. Calitz, and Jean H. Greyling. "Using Neural Networks for Predicting Futures Contract Prices of White Maize in South Africa." In the Annual Conference of the South African Institute of Computer Scientists and Information Technologists. New York, New York, USA: ACM Press, 2016. http://dx.doi.org/10.1145/2987491.2987508.

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Alberts, Johanna Francina, Willem Heber Van Zyl, and Wentzel Christoffel Gelderblom. "Abstract B24: Biological approaches for reducing fumonisin carcinogens in maize." In Abstracts: AACR International Conference: New Frontiers in Cancer Research; January 18-22, 2017; Cape Town, South Africa. American Association for Cancer Research, 2017. http://dx.doi.org/10.1158/1538-7445.newfront17-b24.

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Botha, Monique. "Diversity relationships between arthropods and selected plant family groups of maize agro-ecosystems in two grassy biomes of South Africa." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.111340.

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Botha, Jenny. "Mining for medicine — cultivation of medicinal plants as a component of a mine’s social responsibility programme in South Africa." In Fourth International Conference on Mine Closure. Australian Centre for Geomechanics, Perth, 2009. http://dx.doi.org/10.36487/acg_repo/908_40.

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Agyemang, Malena, and Nathan G. Johnson. "Development of Biomass Energy Technologies and Business Models for Southern Africa." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-48033.

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This study evaluates options for biomass pellet formulations and business models to create a sustainable energy solution for cooking energy in Southern Africa. Various agricultural wastes and agro-processing wastes are investigated to meet industry standards on biomass pellet quality. These fuels are obtained from farms and facilities across a geographic area that affects the end-cost of the pellet through transportation costs and the cost of the biomass. The technical performance of the pellet and cost of the pellet are first contrasted and then optimized in unison to develop sustainable energy options that can provide year-round clean energy for household cooking and heating needs. A market was analyzed using wheat, sugarcane and maize crops as components for the biomass pellet fuel source in the Zululand district of South Africa. Using a target moisture content (MCtarget) of 8–10%, a target lower heating value (LHVtarget) greater than 16.0 MJ/kg and a target percent ash (Ashtarget) less than 3%, pellet metrics were optimized. The cost of the crops for the pellets was dependent upon the amount of each biomass used to make up the composition of the pellet. The production demand was then analyzed based on the most current consumer cooking fuel demand within South Africa. The production model was evaluated for three factory sizes; small (1hr/ton), medium (3hr/ton), and large (5hr/ton). Primary shipping cost is based on factory location and has a major impact on the cost of the pellet for the consumer as well as the availability of the supply. Factory location was analyzed by varying the biomass crop distance to the factory. Several business models are evaluated within this study to show which representation results in a high quality pellet of low cost to consumer. The study suggests the pellet be composed of 44.62% sugarcane, 47.49% maize, and 0.82% wheat resulting in a LHV of 16.00 MJ/kg, a MC of 8 (w/w%), and an ash content of 3 (w/w%). The optimal cost of the biomass fuel pellet for the consumer ranged from 172.77US$/ton to 185.03 US$/ton.
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Alberts, JF, JP Rheeder, and WCA Gelderblom. "Abstract B15: Fumonisins and oesophageal cancer: A proteomic and transcriptomic analyses of molecular mechanisms associated with fumonisin production by Fusarium verticillioides MRC 826 in maize." In Abstracts: AACR International Conference: New Frontiers in Cancer Research; January 18-22, 2017; Cape Town, South Africa. American Association for Cancer Research, 2017. http://dx.doi.org/10.1158/1538-7445.newfront17-b15.

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Dima, Milica, Aurelia Diaconu, Reta Drăghici, Drăghici Iulian, and Matei Gheorghe. "ASPECTS CONCERNING PEANUTS CROPS ON SANDY SOILS IN SOUTHERN OLTENIA." In GEOLINKS Conference Proceedings. Saima Consult Ltd, 2021. http://dx.doi.org/10.32008/geolinks2021/b1/v3/34.

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"For the capitalization of the climate and soil conditions for the sandy soil region in Southern Oltenia by cultivating peanuts it is necessary to use varieties with large production abilities and proper technology for the crops. In view of its cultivation on south Oltenia sandy soils, there were carried out in the period 2004-2006, at the Plants Crops Research and Development Station on Sandy Soils Dabuleni, experiments have been set regarding aspects such as: the optimal seeding period, the recommendation varieties with high yield potential and balanced composition. The research was conducted under irrigation conditions, in a three-year rotation of wheat, peanut, maize. Along with erect growth type varieties, known for their short vegetation period, rising and creeping growth type varieties can also be used; these varieties have a great production potential in our country`s conditions. Establishing the proper time for seeding is espe since sandy soils are heating quickly but are also cooling quickly, the best seeding time is between the end of April- the beginning of May, depending on the date when the seeding depth has a steady temperature, minimal required for the seed to germinate."
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Reports on the topic "Maize cultivation – South Africa"

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Lacambra, Carmen, Dominic Molloy, Juan Lacambra, Isabel Leroux, Leena Klossner, Maria Talari, María Margarita Cabrera, et al. Factsheet Resilience Solutions for the Maize Sector in South Africa. Inter-American Development Bank, June 2020. http://dx.doi.org/10.18235/0002419.

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