The sustainable use of the environment for agriculture has become a global priority, requiring urgent solutions in view of intensifying competition. The South African government and the agricultural sector drafted a strategic plan for South African Agriculture. In this plan it was argued that the potential for the horizontal expansion of agricultural production is limited with one of the limitations being that unused high and medium potential land is scarce. This implies that the challenge for higher agricultural production is immense because primarily it would have to come from increased efficiency. All businesses are confronted by change at some time in their history in which agribusiness in South Africa has been subjected to changes in its past. In this era of hyper competition, agribusinesses are faced with constant change. It is how businesses deal with that change that will determine how successful they will remain in the future. The main problem of this research was to determine if farmers in the Great-Kei Region have the appropriate strategies in place to manage environmental constraints effectively. Therefore, the identification and isolation of prominent environmental constraints, through literature review and survey data gathered and analysed, would assist agribusinesses in the planning and prioritising of investments. The investment would be aimed at facilitating the development and sustainable growth in the Great-Kei Region. In this study, a quantitative, descriptive and non-experimental research design was followed. The target population of the study was farmers with farming businesses operating in the Great-Kei Region. There was data obtained from the Eastern Cape Department of Agriculture provincial office in Komga servicing the Great-Kei Region. The data obtained were lists of registered commercial farmers from the Komga iv Agricultural Association and emerging farmers operation in the region. The data obtained did not include all the farmers operating in the Great-Kei Region. The combined sum of farmers from both lists was 38 farmers (N = 38). The population N = 38 was used as a sampling frame representing the population of farmers in the Great-Kei Region. The population of this study consisted of owners or farm managers running the farming businesses and excludes other farm employees employed at the farms. Farmers with agribusinesses in the area who produced either livestock farming or crop farming or both were included for the study. The results of the survey revealed key findings, which enabled the researcher to draw meaningful conclusions and recommendations. The recommendations suggested how farmers can overcome the identified macro, micro and internal environmental constraints affecting them in the Great-Kei Region. Further identification of strategies currently employed by farmers in managing environmental constraints and the competency levels, indicated where gaps resided with strategies currently employed by farmers and where possible change would be required.

To help local, rural planners make decisions on which Best Management Practices (BMPs) are most appropriate for the control of Non-Point Sources of Pollution (NPSP) within their jurisdiction, a method is developed for unbiased site-specific evaluation of BMPs appropriateness. An appropriate BMP is functional, practical and cost effective. The method developed is a rational method suitable for the general evaluation of agricultural BMPs to control NPSP in rural watersheds. The method is functional, practical, and cost effective because it uses existing data and personnel wherever and whenever possible. Unlike other NPSP modeling methods, this method lends itself to the selective application of BMPs throughout the watershed based on its actual land use and physical composition. This means, BMP's can be applied to the entire watershed uniformly or applied to a subset of the watershed based on selection criteria such as field slope, soil type, or existing cover crop. In addition, a combination of selection criteria can be used, and a combination of BMPs. This flexibility in selecting various BMPs and BMP combinations, allows planners to pose many different schemes for controlling NPSP within the watershed. The results of the schemes can be compared to determine which scheme is the most appropriate for use within the specific watershed. The method developed relies heavily on the United States Department of Agriculture's Soil Conservation Service's (SCS) Universal Soil Loss Equation (USLE) and uses data already being collected by the SCS and the Agricultural Stabilization and Conservation Service (ASCS). The method does require the creation of Hydrologic Response Units (HRUs) comprised of unique combinations or soil type and land use areas. To demonstrate the method's ability to select an effective BMPs for a watershed, a series of BMP scenarios were evaluated. The BMP scenarios were divided into three categories: a uniform application of a BMP throughout the watershed; a selective application of a BMP throughout the watershed and; the selective application of a set of BMP's throughout the watershed. Using a series of trial runs, the benefits of using the method were demonstrated. For example, similar results were obtained using a cropping BMP of "Corn, grain, soybean and cover" throughout the sample, and a ''no-till" BMP on 3 percent of the sample. This type of information was used by economic modelers to help target precious BMP implementation dollars. As an indirect result of the method's HRU development, it was possible to test the independence of each of the USLE factors within the Nansemond/Chuckatuck watershed. The results of the Duncan's Multiple Range Test shows an interdependence between the "soil type and the cover", "overland flow versus cover", and "overland flow versus soil type". / Ph. D.

Thesis (MScAgric)--Stellenbosch University, 2015. / ENGLISH ABSTRACT: In South Africa, sustainable land use and management is paramount as the country’s agricultural natural resources are diverse, complex and vulnerable to degradation. To realise sustainable agricultural production and development, an agro-ecosystem-specific approach entailing soil, water and nutrient conservation agricultural practices is imperative. Conservation Agriculture is one of the agricultural production method that can be employed to ameliorate and prevent the degradation of South Africa’s agricultural land. The major aim of this study was to investigate how the uptake and adoption of conservation agriculture is influenced by economic policies and instruments in South Africa. To achieve this, an interactive research approach was followed initially involving an extensive literature review before scientific and empirical analysis was conducted. Firstly it was noted in the study that currently there is not any specific policy for conservation agriculture that has been promulgated in South Africa, but however there are a number of policies (i.e. Climate change policy, Carbon Tax policy, Land Reform policy, Trade policy, Water policy, Food and nutritional security policy, NEMBA regulations, CRDP, CARA, Organic production policy, Policy on Agriculture in sustainable development and the Environmental policy) that have been drafted which have the potential to positively influence the uptake and adoption of conservation agriculture by farmers across all the farming typologies (i.e. small scale, emerging and commercial farmers). The afore-mentioned policies were described and analysed with the purpose of establishing how they affect conservation agriculture using analysis criteria adopted from the field of political sciences. Criteria of effectiveness, unintended effects, equity, cost, feasibility and acceptability were constantly employed. In this regard, all the policies were tested to see how they affect conservation agriculture and to check if there was any alignment and harmonisation within the policy environment. It was found in this study that an alignment of the aforementioned policies is imperative in order to make the policies politically and administratively feasible which will lead to the swift implementation and effectiveness of the policies in meeting their core objectives. On this basis, it was deduced that the aforementioned policy mix has the potential to advance the uptake and adoption of conservation agriculture to further contribute to an enhanced food security and a sustainable resource base in South Africa. The policy mix analysed in this study, is however under specific constraints. These were identified and subsequently recommendations were made to ameliorate these constraints, in order to make the policies align with each other and to maximise the contribution of the policies towards the advancement of conservation agriculture in South Africa. / AFRIKAANSE OPSOMMING: Volhoubare grondgebruik en bestuur is belangrik in Suid-Afrika as gevolg van diverse, komplekse en kwesbare natuurlike hulpbronne wat maklik degradeer. As gevolg hiervan moet volhoubare bewaringspraktyke gevolg word wat spesifiek is tot die grond, water en voedingswaarde kompleks van verskillende boerdery-omgewings gevolg word. In hierdie opsig is bewaringsboerdery een metode wat ontplooi kan word om grond-degradasie te voorkom. Die hoofdoel van hierdie studie was dus om te bepaal tot watter mate die aanvaarding van bewaringsboerdery praktyke deur ekonomiese beleid en -instrumente beïnvloed word. Hiervoor is ʼn interaktiewe benadering gevolg tussen ʼn uitgebreide literatuurstudie en ʼn wetenskaplike en empiriese analise. Die eerste belangrike bevinding is dat daar tans geen formele staatsbeleid oor bewaringsboerdery in Suid-Afrika bestaan nie, maar daar is wel verwante beleidsuitsprake (oor klimaatsverandering, die koolstof belasting, grondhervorming, internasionale handel, voedselen voedingsbeleid, NEMBA regulasies, CRDP, CARA, beleid oor organiese produksie, beleid oor volhoubare landbou-ontwikkeling en omgewingsbeleid) wat wel die aanvaarding van bewaringsboerdery praktyke kan versnel. Hierdie stel van beleidsuitsprake is beskryf en ontleed deur middel van ʼn analitiese raamwerk ontleen aan die politieke wetenskappe om hulle potensiële impak op bewaringsboerdery. Die spesifieke kriteria waarop gekonsentreer is sluit in doeltreffendheid, ongewensde gevolge, regverdigheid, koste, implementeerbaarheid en aanvaarbaarheid. Die doel van laasgenoemde was nie slegs om vas te stel hoe hulle bewaringsboerdery beïnvloed nie, maar ook of daar belyning bestaan tussen die verskillende beleidsuitsprake, omdat sulke belyning krities is tot suksesvolle implementering. Daar is dan bevind dat die huidige stel beleidsuitsprake wel die potensiaal het om by te dra tot die aanvaarding van bewaringsboerdery, en dus tot die volhoubare bestuur van Suid-Afrika se hulpbronne. Hierdie bestaande beleidsraamwerk word egter onderwerp aan spesifieke beperkings. Laasgenoemde is dan geïdentifiseer, en is aanbevelings gemaak om dié beperkings aan te spreek om sodoende beter belyning te kry en dus om hulle bydrae tot volhoubare boerdery te bevorder.

published_or_final_version / Geography / Master / Master of Philosophy

Thesis (Ph. D.)--Ohio State University, 2006. / Title from first page of PDF file. Includes bibliographical references (p. 526-547).

Agricultural conservation education is an important concept globally and locally. The Kenedy County Agricultural Conservation Education (ACE) Center will be established in the very rural and agriculturally-based community of Sarita, Texas, using federal funds from a Coastal Impact Assistance Program grant. The purpose of this study was to identify grantee and stakeholder perceptions of the Kenedy County ACE Center. The results identified beliefs about the Center's purpose, who its stakeholders were, possible concerns about the center, and use of the center by the 4-H program. Additionally, intentions and expectations about the Center were identified; these included operation and management, benefits, programs and activities, and others intentions and expectations. Differences between grantees' and stakeholders' perceptions were found about main focus of the ACE Center, management, and degree of concern for the center's future. This study showed that overall, grantees and participants perceive a great deal of educational benefits from the ACE Center, mainly relating to topics important to Kenedy County's livelihood, including agriculture, livestock production, wildlife management, and range management. Other major expected and intended benefits are pride for Kenedy County, ability to use a new facility in Sarita, and an increase in youth 4-H participation. This case study produced knowledge that will allow the Kenedy County ACE Center to have a clearer sense of purpose and direction and to be successful.

Thesis (M.P.A.)--Kutztown University of Pennsylvania, 1995. / Source: Masters Abstracts International, Volume: 45-06, page: 2960. Typescript. Includes bibliographical references (leaves 93-94).

The research was done with the aim of evaluating the effect of the basin tillage system as a method of conservation agriculture, on improving smallholder farmers’ food security in Mutasa, Manicaland Province in Zimbabwe. This research focussed on the 2010/2011 agricultural season. The main objectives of this study were to determine the contribution of CA basin tillage system on increasing yields per hectare, to evaluate which CA principles are being practiced by smallholder farmers, and to determine how many months the harvested maize will last. The study compares smallholder farmers who practiced CA with farmers who practiced other tillage methods. The other tillage methods are ploughing and conventional hand hoe tillage systems. On average the farmers who practiced CA used 0.47 hectares of land whilst farmers who practiced other tillage methods used an average of 0.43 hectares of land. The average amount of maize produced by smallholder farmers who practiced CA was 824 kg while who practiced other tillage methods produced an average of 498 kg. Farmers practicing CA produced yield with an average of 1175 kg/ha of maize grain while farmers who practiced other tillage methods produced an average of 946 kg/ha. Food security in this reaseach was measured by the amount of months the maize grain produced was lasting in relation with the household size. 57 percent of the farmers who practiced CA are food secure because they have maize grain to last them a full consumption year and moreover surplus. Only 27 percent of the farmers who practiced other tillage methods produced enough to last a full consumption year.

By 1980, the United States had lost over 50 percent of its original wetland resources. The U.S. National Wetland Inventory estimates that 95 percent of annual wetland losses since 1955 occurred to palustrine wetlands. The majority of these losses occurred to the three types of palustrine vegetated wetlands: emergent, forested, and shrub. The primary cause for wetland losses from the mid-1950s to the mid-1980s was agricultural conversion supported by federal agricultural policies, especially the Agricultural Conservation Program that provided significant direct and indirect support for wetland conversions. The rate of converting wetland to agriculture has declined since the mid-1950's with a significant decrease occurring between the mid-1970s and mid-1990s. Statistical analysis using correlation, regression and principal component analysis was performed to identify the major contributory factors in loss rates in the Midwest, Lower Mississippi River Valley and the Southeast United States. The variables considered are: Swampbuster provisions of the Food and Security Act of 1985, Conservation Reserve Program enrolled acreage and rental rates, Wetland Reserve Program and The Clean Water Act Section 404 permits; prices of corn, soybeans and wheat; and the percent of wetlands remaining. The results indicated agricultural policies and Clean Water Act Section 404 permits and wetland loss rates were negatively correlated and prices of corn, soybeans and wheat were positively correlated. The percentage of wetlands remaining, were also positively correlated with loss rates. Taken together, the selected agricultural policies, Section 404 permits, commodity prices and percent of wetland remaining, explain 96 percent of the variance in wetland loss rates and 94 percent of the agricultural losses nationally. These results are consistent, with minor variations, across geographic wetland strata and wetland types. Regional differences exist in the major type of wetland losses; emergent wetland losses were more prevalent in the agricultural Midwest, with forested wetland losses concentrated in the Lower Mississippi River Valley and the Southeast United States. The results of this research reflect the intricate relationships between federal legislation, regulatory programs, legal decisions, economic factors, and changes in society's view and understanding of the importance of wetlands and the need to merge conservation programs with agricultural policies. Economic factors exert a significant impact in decision-making of whether to convert or conserve wetland resources. The economic feasibility of installing drainage system to make wetlands farmable depends upon the relationship of capital investment cost and crop prices. Commodity prices impact decisions regarding enrollment into the Conservation Reserve Program and the Wetland Reserve Program; higher commodity prices can make conversion more profitable but low crop prices will make these programs more appealing economically. The Swampbuster provisions are effective in conserving wetlands if the economic penalties are significant to the individual farmer. The policy, legal and commodity variables were used to create models that explain the inter-relationship between agricultural economic factors, policy impacts and commodity prices. The models indicate how the variables could affect decision-making in determining whether to convert or conserve palustrine vegetated wetlands; increased commodity prices coupled with lower conservation program payments could jeopardize wetland conservation efforts and result in increased wetland loss rates due to increased wetland drainage and conversion.

As human populations rise exponentially, agricultural production systems must be adapted to sustain ecosystem function. Government administered agricultural conservation programs may actualize greater gains in ecosystem services, including wildlife population gains, if conservation practices designed to target specific environmental outcomes are implemented strategically in agricultural landscapes. I evaluated multi-scale, multi-species, and multi-season avian population responses to a targeted native herbaceous buffer practice (CP33: Habitat Buffers for Upland Birds) under the continuous sign-up Conservation Reserve Program administered by the U.S. Department of Agriculture. CP33 is the first conservation practice targeted directly to support habitat and population recovery objectives of a national wildlife conservation initiative (Northern Bobwhite Conservation Initiative). I coordinated breeding season, fall, and winter point transect surveys for northern bobwhite (Colinus virginianus), priority early-succession, and overwintering birds on ≈1,150 buffered and non-buffered fields in 14 states (10 ecoregions) from 2006-2009. I also assessed northern bobwhite-landscape associations within each ecoregion to determine effects of landscape structure on observed northern bobwhite abundances. Breeding season and autumn northern bobwhite densities were 60-74% and 52% greater, respectively, over all survey points in the near term (1-4 years post-establishment). However, breeding season and autumn response and associations between northern bobwhite abundance and landscape structure exhibited substantial regional variation, suggesting northern bobwhite conservation and management should be implemented on a regional basis. Breeding season densities of dickcissel (Spiza americana) and field sparrow (Spizella pusilla) were up to 190% greater on buffered fields, whereas overwintering densities of several Emberizid sparrow species were up to 2,707% greater on buffered fields. Species sensitive to patch area or those requiring vegetation structure different from that provided by buffers exhibited limited, but regionally and annually variable responses to buffered habitats. Increased bird densities of several species in several seasons suggest wildliferiendly farming practices delivered strategically and requiring minimal change in primary land use can benefit species across broad landscapes when conservation practices are targeted toward specific recovery objectives. Targeted conservation systems combining multiple conservation practices to provide an array of ecosystem services may be a mechanism for meeting multifarious conservation objectives and enhancing biodiversity in agricultural landscapes.