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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Effect of arbuscular mycorrhizal fungi and different phosphorus rates on selected soil and growth parameters of two dry bean cultivars

Moila, Maserole Mavis January 2018 (has links)
Thesis (M.Sc. (Agriculture)) --University of Limpopo, 2018 / Dry bean is one of the most important cash crops and source of protein for small holder farmers. Low yields of dry bean are often reported to be associated with lack of inoculation (Arbuscular mycorrihizal fungi) of seeds prior to planting. Soil phosphorus (P) unavailability is one of the major factors limiting yield of dry bean. Field and Greenhouse experiments were conducted to investigate the response of dry bean cultivars to inoculation and phosphorus application under dry land farming conditions at the Syferkuil experimental farm of University of Limpopo. Both greenhouse and field experiments were carried out as a split-split plot arrangement in randomised complete block design with four replications. Main plot treatment comprised of two dry bean cultivars VIZ, red speckled bean and small white haricot. Arbuscular mycorrhizal fungi inoculation levels (inoculated and uninoculated) were assigned in the sub-plot whilst the sub-sub plot was applied with five phosphorus rates at 0, 20; 40; 60 and 80 kg/ ha using single superphosphate (10.5 % P). The data collected were subjected to analysis of variance using statistical software (ANOVA) STATISTIX 10.0.Dry bean cultivars (red speckled bean and small white haricot bean) were evaluated in a field experiment for their growth, nodulation and yield responses to AM fungi inoculation and different rates of P fertiliser. The results revealed that the red speckled bean had higher number of nodules (45 %), stem diameter 26.96 cm and higher leaf area of 21.05 cm2 as compared to small white haricot bean. The application of P at the rate of 40 kg/ha produced higher grain yield of 743.47 kg/ha as compared to small white haricot bean with 572 kg/ha. The growth parameters such as yield, soil chemical and biological properties did not significantly respond to inoculation (P≤0.05). Red speckled bean and small white haricot bean were evaluated in greenhouse experiment for their growth and nodulation on inoculation and phosphorus fertilizer treatment In the greenhouse experiment phosphorus fertilizer rate showed significant effect on chlorophyll content, leaf fresh and dry weight. The dry bean cultivars were found to be significant to number of nodules, plant vigour and root dry weight. The red speckled bean showed higher growth parameters as compared to small white haricot bean. The application of Arbuscular mycorrhizal fungi (AM fungi) at varying rates did not have any significant influence on all parameters measured in the experiment on both trials. The study needs to be repeated after 4 to 5 years. The findings of this study concluded that P should be applied at the rate of 40 kg P/ha in order to improve the production of dry bean. / NRF (National Research Foundation)
2

Cash crops vs food crops : A case study of household's crop choices in Babati District

Åström, Petter January 2009 (has links)
<p>According to earlier research farmer's crop orientation in developing countries mainly depends on farm size, large-scale farmers prefer cash crop while small-scale farmers prefer subsistence crops. The first aim of this study is to see if this hypothesis can be applied on six households in Babati District in rural Tanzania. The second aim is to investigate if other factors than farm size affect crop portfolio choice and the final aim is to see if those crop portfolio models can be improved. A case-study research design and qualitative interviews are used. The primary data is based on a fieldwork that took place from the 18th of February until the 7th of March 2009 in the study area.</p><p>From a theoretical perspective the underlying assumptions of the Marcel Fafchamp's model <em>Crop portfolio choice under multivariate risks </em>is discussed in connection to the result of the study.</p><p>Interviews were made with six households of different farm size. The result of the study indicates that both small-scale and large-scale farmers are using cash crops. The fact that all crops can be used for selling, gives also small-scale farmers in season with higher prices, an opportunity to sell a large share of their crops. It's thereby not possible to state that large-scale farmers devote a larger share of their land for cash crop than small-scale farmers do.</p><p> </p>
3

Cash crops vs food crops : A case study of household's crop choices in Babati District

Åström, Petter January 2009 (has links)
According to earlier research farmer's crop orientation in developing countries mainly depends on farm size, large-scale farmers prefer cash crop while small-scale farmers prefer subsistence crops. The first aim of this study is to see if this hypothesis can be applied on six households in Babati District in rural Tanzania. The second aim is to investigate if other factors than farm size affect crop portfolio choice and the final aim is to see if those crop portfolio models can be improved. A case-study research design and qualitative interviews are used. The primary data is based on a fieldwork that took place from the 18th of February until the 7th of March 2009 in the study area. From a theoretical perspective the underlying assumptions of the Marcel Fafchamp's model Crop portfolio choice under multivariate risks is discussed in connection to the result of the study. Interviews were made with six households of different farm size. The result of the study indicates that both small-scale and large-scale farmers are using cash crops. The fact that all crops can be used for selling, gives also small-scale farmers in season with higher prices, an opportunity to sell a large share of their crops. It's thereby not possible to state that large-scale farmers devote a larger share of their land for cash crop than small-scale farmers do.
4

Smallholder cashcrop production and its impact on living standards of rural families in Kenya /

Kabura Nyaga, Elizabeth A. January 2007 (has links)
Thesis (doctoral)--Universität, Hohenheim, 2007. / Includes bibliographical references (p. 231-238).
5

Impacts of large scale sugar investments on local livelihoods seen through the Sustainable Livelihoods Approach : A case study on a multinational sugar company’s presence in Manhiça, Mozambique

Muntrakis, Emelie January 2015 (has links)
Establishment of big companies in rural areas is something that is getting more and more common as the phenomenon of land acquisition is growing. This study is based on a case study in Manhiça where a big scale multinational sugar company, consisting of a sugar factory and sugarcane plantations, has been present for almost 20 years. The theoretical framework is based on the Sustainable Livelihoods Approach (SLA) that is made into a method by taking dimensions from the theory and converting them into analytical tools. The aim is to identify and analyse the impacts that the company’s activities have on longer term on the capital basis of the various groups with which the company relates. Using the perspective of SLA helps identify the wide range of impacts – direct and indirect, positive and negative – that matter to local people. The study is qualitative and based on semi-structured interviews made with different groups of outgrower farmers and employees as well as representatives for the company and the municipality. The results are, in accordance with the principles underlying the SLA, focusing on the perceptions of people and the dynamic nature of livelihoods. A pilot study is used to indicate which impacts that are a result of the company’s presence and which only a result of switching to cash crops. The study shows that different groups are affected different from the interactions with the company. People with already weak livelihoods are benefited least since their access to different capital assets decrease.
6

Can Sustainability Standards Promote Socioeconomic Development in the Small Farm Sector? Insights from Coffee Producers in Uganda

Meemken, Eva-Marie 12 May 2017 (has links)
No description available.
7

Agriculture and poverty reduction : a critical assessment of the impact of avocado industry on small-scale farmers in Giheta-Burundi.

Hakizimana, Cyriaque. January 2011 (has links)
The role of agriculture in rural development is widely documented in literature. Many analysts regard agriculture, specifically small-scale agriculture, as the cornerstone for viable and sustainable economic growth. Furthermore, the agricultural sector is seen as an effective instrument for poverty reduction, particularly in rural communities of developing countries where a large amount of poor people are concentrated. Indeed, analysts now agree that developing the agricultural sector is perhaps one of the most effective ways to address high levels of poverty evident in the developing world, and call on the world leaders to commit themselves to direct more investment into this sector. Using the avocado industry in Giheta-Burundi, this dissertation argues that some emerging crops (such as avocados) present enormous opportunities to income generation for small-scale farmers with the potentiality of diversifying cash crop farming in Burundi, an area currently dominated by coffee, tea and cotton. This study further suggests that avocado farming presents the economic, market and health potentiality to contribute to a viable and sustainable rural economy in Giheta Burundi, thereby reducing levels of poverty in this area. The main research question is as follows: “To what extent does the production of avocados benefit the income and wellbeing of small-scale farming households in Giheta?” Accordingly, the main policy concern is that if avocados are playing a crucial role for income generation, wellbeing and diet of the small-scale farmers in Giheta, the avocado sector needs to be substantially supported by both the private and public sectors in order to increase the capacity of avocado production in this area and subsequently enable small-scale farmers to gain greater income from this sector. All of which will contribute significantly to reducing levels of poverty in Giheta. This dissertation is 42 266 words in length excluding references and appendices. / Thesis (M.A.)-University of KwaZulu-Natal, Durban, 2011.
8

"I Have Told You about the Cane and Garden": White Women, Cultivation, and Southern Society in Central Louisiana, 1852-1874

Swindler, Erin 14 May 2010 (has links)
This thesis examines cultivation in the lives of Sarah and Columbia Bennett between the years 1852 and 1874. The Bennett women's letters convey an intimate sense of the agro-economic preoccupations (and gardening pleasures) of these slave-owning white women, and the centrality of cultivation in mid-nineteenth-century rural Louisiana within a landscape of country stores, plantations, and people. As the lives of the Bennett women illustrate, white women's gardening knowledge and practice formed a cornerstone of central Louisiana society. The Bennett women's gardening knowledge and skill were primary components in the creation of a self-sustaining plantation household. By cultivating produce and other foodstuffs for consumption, the Bennett women made possible the family's participation in the lucrative market for cotton and other cash crops, a market that also tied their household to plantation economies elsewhere in the transatlantic world.
9

La vie rurale en Syrie centrale à la période protobyzantine (IVe-VIIe siècle). / Rural life in Central Syria in the early Byzantine period (4th-7th century).

Rivoal, Marion 15 March 2011 (has links)
La Syrie centrale connaît au début de la période byzantine, et en particulier au Ve et au VIe siècle, un fort mouvement d’expansion des sédentaires vers l’est, qui coïncide avec une importante mise en valeur de ces nouveaux territoires. Comme pour d’autres régions de Syrie et du Proche-Orient à la même époque, un optimum climatique – pourtant déclinant – semble avoir permis la conquête et l’exploitation agricole de nouveaux terroirs dans une zone marginale qui n’avait jusqu’alors connu qu’une occupation sédentaire ponctuelle. La Syrie centrale est caractérisée par des milieux aux potentiels agronomiques très différents, souvent imbriqués. Le peuplement et la mise en valeur y sont soumis à la double contrainte de l’aridité climatique et édaphique, qui s’exerce avec une prégnance croissante vers le sud et l’est. Ces conditions, qui s’améliorent localement à la faveur de niches écologiques, ont permis à des politiques de mise en valeur et à des économies distinctes, souvent complémentaires, de voir le jour.Dans une région où les cités paraissent en grande partie absentes, l’économie repose d’abord sur les villages et sur quelques bourgs qui possédaient manifestement une orientation commerciale spécifique. Aux côtés des agglomérations, et souvent d’autant plus nombreux que les conditions d’implantation sont délicates, des fermes et des monastères s’affirment comme des acteurs économiques apparemment indépendants et souvent prospères. Des entités géographiques relativement homogènes ont donné lieu à une répartition des différentes formes de peuplement et à des économies microrégionales spécifiques. Si l’agriculture vivrière reste la règle, il semble bien cependant qu’on observe une spécialisation locale des productions : culture du blé et accessoirement plantations à l’ouest, oléiculture et peut-être viticulture dans les plateaux basaltiques du nord-ouest et vraisemblablement un élevage spéculatif, qu’on doit probablement attribuer à des populations sédentaires, dans les secteurs sud et est. / In Late Antiquity, especially between the 5th and 6th centuries, Central Syria witnessed a strong expansion of sedentary settlements eastward, which coincided with a significant agricultural development of these new territories. As for other areas in Syria and Near-East at the same period, a waning climatic optimum seems to have allowed byzantine population to settle down in marginal areas which barely experienced hitherto sedentary occupation and farm nearly unbroken lands.Central Syria is made up of various landscapes, sometimes deeply nested, with contrasted agricultural potential. Settlements and agricultural exploitation are affected by an increasingly significant climatic and edaphic aridity eastward and southward. These conditions, which may locally improve thanks to ecological niches, enabled specific and often complementary substance strategies to develop.In a country whence cities are virtually absent, villages and a few market towns seem to be at the very root of the regional economy. Along with agglomerations, scattered habitats – namely farmsteads and monasteries –, more numerous under heavy bioclimatic constraints, would appear as independent and apparently prosperous economic players.Homogeneous geographic areas led to specific settlement patterns and different economic orientations. Food-producing agriculture remains the rule, but a local productive specialization may be noticed: mainly wheat production and incidentally plantations westward, olive-growing and maybe wine-growing as well in the north-west basaltic plateaus and presumably speculative livestock exploitation eastward and southward, probably mostly due to sedentary populations.
10

Die voedselparadoks : 'n ondersoek na vraagstukke rondom voedselsekuriteit in Suid-Afrika

Kotzé, Derica Alba 11 1900 (has links)
Text in Afrikaans / Summaries in Afrikaans and English / Miljoene mense ervaar voedselonsekerheid en een uit elke 50 hanger mense is woonagtig in Suid­ Afrika. Daar is genoeg voedsel op ons planeet om elke mens van 'n voldoende voorraad voedsel te verseker; dit waarborg egter nie voedselsekuriteit aan almal nie. Dit is die voedselparadoks: ondanks globale surplusproduksie van voedsel, ly miljoene mense wereldwyd aan wanvoeding en honger, maar veral in die ontwikkelende lande. Suid-Afrika is geen uitsondering nie en ten spyte van selfvoorsiening in voedsel, balanseer die voedselgelykstelling nie. Daar bestaan 'n ekstreme gaping tussen die produksie en verbruik van voedsel. Gevolglik is die probleem wat nagevors is in hierdie studie die gebrek aan voedselsekuriteit binne 'n wereldkonteks met voedselsurplusse en hoe dit reflekteer in Suid-Afrika. Teen hierdie agtergrond is daar 'n studie gedoen van die oorsake van voedselonsekerheid en die teoriee en verduidelikings van hongersnood. Die fokus van hierdie navorsingstudie is drieledig van aard. Eerstens fokus dit op 'n konseptuele ondersoek na hanger, armoede, voedselsekuriteit en hongersnood in Afrika. Tweedens is ondersoek ingestel na die oorsake vir die gebrek aan voedselsekuriteit in Afrika. Derdens is daar gefokus op Suid-Afrika en is 'n ondersoek gedoen na die voorkoms van hanger, wanvoeding, armoede en die nasionale konteks van voedselsekuriteit met die doel om vraagstukke daaromheen te identifiseer. Daar is bevind dat voedselsekuriteit bepaal word deur die beskikbaarheid van voedsel (aanbod) en die vermoe van mense om dit te bekom (aanvraag). Dit blyk dat die ontwikkelingsproses, regeringsbeleid, ekologiese omgewing en tegnologie, wetenskap en navorsing 'n direkte invloed het op die voedselsekuriteit van mense, en dat Suid-Afrika nie verskil van ander Afrikalande in hierdie verband nie. Hoewel Suid-Afrika voedselselfvoorsiening bereik het, ly miljoene mense honger weens armoede en die gebrek aan aansprake wat bydra tot 'n gebrek aan voedselsekuriteit. Die studie toon dat die Suid-Afrikaanse regering verskeie beleidsmaatreels in plek het ter bevordering van voedselsekuriteit, maar dat dit nie in die praktyk verwesenlik word nie. / Millions of people in the world experience food insecurity and one out ofevery 50 hungry people lives in South Africa. There is enough food on our planet to assure every person of an adequate supply of food; however, this does not guarantee food security for all. This is the food paradox: despite a global surplus production of food, millions of people experience malnutrition and hunger all over the world, but especially in the developing countries. South Africa is no exception and despite self-sufficiency in food, the food equation is not balanced. An extreme gap exists between the production and consumption of food. Consequently, the problem researched in this study is the lack of food security in a world context with surplus food and how this is reflected in South Africa. Against this background a study was undertaken of the causes of food insecurity and the theories and explanations of famine. The focus of this research study is threefold. Firstly it focuses on a conceptual enquiry intohunger, poverty, food security and famine in Africa. Secondly there is an enquiry into the causes of the lack of food security in Africa. Thirdly it focuses on South Africa and an enquiry is done into the incidence of hunger, malnutrition and poverty, and into the national context of food security with the aim of identifying relevant problems in food security. It was found that food security is determined by the availability of food (supply) and the capability of people to obtain it (demand). It appears that the development process, government policy, ecological environment and technology, science and research directly affect the food security of people, and that South Africa does not differ from other African countries in this regard. Although South Africa has achieved food self-sufficiency, millions of people experience hunger because of poverty and the lack of entitlements. The study shows that the South African government has various policy measures for the promotion of food security in place, but that food security does not materialise in practice. / Development Studies / D.Litt. et Phil. (Ontwikkelingsadministrasie)

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