Hälsans Trädgård is a project which is going to start in Gamla Linköping, Sweden. The authors were commissioned by Arbetslivsresurs, a company working with work rehabilitation, to select, define and make job analyses on five work tasks at Hälsans Trädgård in Gamla Linköping. A job analysis means an analysis of the demands the job make of the individual. The job analysis used in this study is called The Revised Handbook for Analyzing Jobs (RHAJ) and is from the US Department of Labor (DOL). As RHAJ is an American instrument, the authors produced a form where the concepts are translated into Swedish to make the analysis easier. The areas that were analyzed according to the RHAJ were: worker functions, general educational development, specific vocational preparation, aptitudes, temperaments, and physical demands and environmental conditions. The five work tasks that were analyzed at Hälsans Trädgård were: “Raking”, “Planting flowers”, “Weeding”, “Shoveling snow” and “Portraying Lisa”. The result shows that the five work tasks make low demands on the individual and that none of the tasks demand mathematical development. The task “Portraying Lisa” was the task which, in most cases, made the most demands on the individual. The discussion proposes how the work tasks can be more complex. The authors suggest investigations that test the RHAJ for validity and reliability and that the RHAJ in full be translated into Swedish and tested under Swedish circumstances in future research.

The environmental horticulture industry, also known as the “Green Industry”, is the second most important sector in the United States’ agricultural economy in terms of economic output and one of the fastest growing segments of agriculture; however, it has experienced a steady slowdown in growth in the past years. Floriculture and nursery crops average annual growth rate decreased from 13.64% in the 1970s to approximately 2.87% in the 2000s, and the industry is currently considered to be facing a mature market. The Texas A&M Agricultural Program, in an attempt to help Texas’ green industry producers compete effectively in an evolving marketplace, developed the Texas Superstar TM and Earth-Kind TM programs. Both of these programs intend to raise awareness among consumers of Texas-grown plant material while promoting environmental responsibility, and to increase producers’ profitability by providing them with products that can be sold at a price premium. In spite of the considerable investments on research and marketing that have been done in order to assure the release of every new plant, no research has investigated the effectiveness of these branding efforts in terms of consumer’s behavior. This research seeks to evaluate brand awareness and willingness-to-pay on the part of lawn and garden consumers. The discrete choice models used were the logit and probit model on brand awareness and the tobit model on the conditional willingness-to-pay. Results from this study conclude that consumers’ awareness of Texas Superstar TM and Earth-Kind TM in the Texas area is low, but the satisfaction level among aware consumers is high. The presence of awareness was found to increase willingness-to-pay for Texas Superstar TM and Earth-Kind TM by about 10%. Furthermore, profiles of the consumers’ behavioral and demographic characteristics that are more likely to influence brand awareness and willingness-to-pay were identified.

Propagating methods for peach (Prumis persica L. Batsch.) are currently limited to the use of seeds or cuttings. Most of the rootstocks commonly used for establishing peach trees commercially originate from a narrow genetic base. The most commonly used peach rootstock in South Africa is 'Kakamas', which has disadvantages such as slow growth, and a high susceptibility to certain pests and diseases. 'Kakamas' is classified as a mid to late ripening cultivar, hence, its use as a rootstock is restricted in early ripening cultivars. Optimising peach seedling and cutting production may on the other hand increase more selection material that will increase genetic variability and also serve as the basis for future production and selection of rootstocks for peach nursery establishments. Hence, this study was designed to improves success of peach cutting production by increasing the rooting percentage and the survival rate of cuttings. This was firstly achieved by the application of various concentrations of IBA and several rooting-cofactors. Secondly, rooting success of cuttings taken at different seasons was studied. The response of two cutting positions to various IBA and rooting-cofactor was evaluated. Attempts were also made to overcome the requirement of peaches for a seed stratification period by using plant growth regulators. Studies to optimise the establishment and growth of embryos of early to late ripening cultivars ('Klara', 'Oom Sarel' and' Summer Giant') in vitro were undertaken to overcome the problem of small underdeveloped embryos which are often obtained from early ripening peach cultivars. The early ripening peach cultivars 'DeWet', 'Earlibelle' and 'Florida Prince' were propagated by softwood, semi-hardwood and hardwood cuttings prepared from August 1999 to July 2000. It was found that softwood cuttings prepared in October and November responded well to an IBA application of 1000 mg 1(-1), resulting in 100 % rooting in all three cultivars. In 'Florida Prince' and 'DeWet' the rooting-cofactors chlorogenic acid and phloroglucinol at the concentration of 100ug 1(-1) yielded 77 % and 81 % rooting, respectively while quercitin and rutinin gave only 46 and 44 % rooting for all cultivars. The basal portion of the cutting rooted better than the terminal portion (78 % versus 58 %). Rooting percentage differed in all treatments in response to IBA application and rooting-cofactors 74 % for 'Florida Prince', 62 % for 'DeWet' and 54 % for 'Earlibelle'. The use of IBA and Ca-EDTA proved to be beneficial for rooting of 'Florida Prince' cuttings and resulted in a rooting percentage of 86 % in wounded hardwood cuttings of this cultivar. It was also shown that the simple sugars glucose, fructose and sucrose as well as the sugar alcohols sorbitol and mannitol accumulated at the base of the cutting during adventitious base root formation if the cutting bases were treated with 1000 mg 1(-1) IBA. The concentration of these sugars and sugar alcohols were lower in untreated cuttings compared to IBA treated cuttings during the adventitious root formation process. Studies on the origin of adventitious root formation in stem cuttings of peaches were conducted using light microscopy and transmission electron microscopy. These studies revealed that adventitious roots originate (in peaches) in the vicinity of the vascular bundle tissue and in the cells around them. It was found, however, that adventitious root formation in IBA treated cuttings is associated with the formation of root primordia. These may trigger root initiation and ultimately the development of adventitious roots. In embryo culture studies the highest number of roots and greatest length of roots per embryo as well as the highest number of embryos forming roots was achieved when either the medium of Murashige and Skoog (MS) (1962) or of Steward and Hsu (SH) (1978) were employed. The Woody Plant medium (Lloyd and McCowan, 1978) and the medium after Schenk and Hildebrandt (1972) were found to be less effective when compared to MS and SH media. Addition of GA(3) (0.01 mg 1(-1)), BAP (0.2 mg 1(-1)) or GA(3) (0.01 mg 1(-1))+ BAP (0.2 mg 1(-1))+IBA (0.5 mg 1(-1)) to the media gave the best results with respect to embryos forming roots (86 %), number of roots per embryo (8.0) and total length of roots per embryo (7.57 cm). Furthermore, the following conditions for optimal rooting of peach embryos were established: pH 5.2, 1.5 g 1(-1) agar, 60 g 1(-1) sucrose and 16h light/8h darkness photo period. Further studies on the influence of the stratification temperature on germination of embryos revealed the highest germination percentage after exposure to 40 C ±2 constantly for 30 to 60 days. However, this chilling requirement can be successfully substituted by the addition of GA(3) , kinetin, zeatin, BA and thiourea to the culture media. / Thesis (M.Sc.)-University of Natal, Pietermaritzburg, 2001.

Avocados are becoming an increasingly important crop in South Africa, where the main producing areas include Limpopo, Mpumalanga and KwaZulu-Natal provinces. The South African avocado industry faces considerable challenges including increasing competition exporting avocados, particularly to the European market. The processes involved to export avocados has markedly improved over the past two decades, however there is always room for improvement and it is necessary to remain competitive on a global scale. Issues such as fruit being partially soft on arrival, quality defects and cold chain management breakdown are still present. It is necessary to investigate new aspects of cold storage such as extending the storage period and understanding the physiological aspects involved. To improvement such issues, an investigation was conducted on ultra-low temperature shipping (1°C) as well as the use of 1-MCP; the implementation of deliberate cold chain breaks to achieve a better understanding as to the quality influences involved; an extended storage period of 56 days to assess the quality issues and benefits involved; as well as investigating the physiological aspects involved with all above treatments on 'Hass' avocados. An initial study saw early-, mid- and late-season 'Hass' avocados stored at 1°C or 5.5°C for 28 days. Additional treatments included fruit treated and not treated with 1-MCP as well as waxed and unwaxed fruit. Storage at 1°C was comparable with 1-MCP treatment for both fruit softening in storage and extending the ripening period. Storage at 5.5°C resulted in partial in-transit ripening, if 1-MCP was not used. Early-season fruit incurred the most external chilling injury but overall levels were minimal and not concerning. Mid-season fruit were the most sound in terms of quality. It is suggested that 1°C can be used as a viable economic alternative to 1-MCP for long distance shipping of 'Hass' up to 28 days. The cold chain break trial included a 24 hour delay before cold storage, a deliberate 8 hour break at day 14 of cold storage where fruit were removed from cold storage and a control of 28 days cold storage where no break was involved. Early-, mid- and late-season 'Hass' avocados were stored at 1°C or 5.5°C for 28 days. Additional treatments included fruit treated and not treated with 1-MCP as well as waxed and unwaxed fruit. It was found that cold chain breaks do influence the amount of water loss, fruit softening and days taken to ripen. Storage at 1°C did not entirely negate the effects of cold chain breaks compared with 5.5°C, but did result in fruit which were harder at the end of storage and took longer to ripen. The use of 1-MCP also had advantageous effects with respect to significantly lengthening the ripening period, even when a cold chain break occurred, compared with fruit not treated with 1-MCP. As results of the study differed in some respects to those of previous studies, it is recommended that further work be conducted to determine what fruit or pre-harvest factors affect the fruit physiological changes which take place when cold chain breaks occur. Having the option to make use of an extended storage period would be of benefit to the industry if delays occur and fruit have to be maintained under cold storage. Extended storage of South African avocados, especially at the end of the season would also allow for the option of strategically holding back fruit from the export market in order to extend the supply period. It would not only benefit export options, but would also be highly beneficial to local pre-packers, as it would reduce the need to import fruit from the Northern hemisphere production areas during the South African off-season. Early-, mid- and late-season 'Hass' avocados were stored at 1°C or 5.5°C for 56 days. Additional treatments included fruit treated and not treated with 1-MCP as well as waxed and unwaxed fruit. The combination of 1°C with the use of 1-MCP resulted in a good shelf life as well as maintenance of internal quality and integrity. External chilling injury is of concern for early-season fruit, however, mid- and late-season fruit did not incur extensive damage. It is, therefore, advised that fruit placed in extended storage are marketed through the 'Ready ripe' program to mask any chilling injury on the 'Hass' fruit. Avocados are renown as a "healthy food" due to their nutritional value as well as containing relatively high concentrations of antioxidants. The fruit also contain high amounts of C7 sugars which can act as antioxidants. Additionally, C7 sugars and other antioxidants play important roles in fruit quality. Therefore, it is important to understand how varying storage conditions and treatments affect the levels of these physiological parameters. Treatments of cold chain break/delay included a deliberate 8 hour break at day 14 of cold storage where fruit were removed from cold storage, a 24 hour delay before cold storage and a control of 28 days where no break was involved. A 56 day extended storage period was also used. Early-, mid- and late-season 'Hass' avocados were stored at 1°C or 5.5°C for 28 days. Additional treatments included fruit treated and not treated with 1-MCP as well as waxed and unwaxed fruit. The use of 1-MCP maintained higher levels of antioxidants, ascorbic acid and C7 sugars for both the 28 day and the 56 day storage periods. The 24 hour delay had a tendency to increase consumption of anti-oxidant and sugar reserves. The use of 1°C resulted in antioxidant and ascorbic acid levels decreasing while maintaining higher sugar levels. Overall, high stress imposed on fruit decreased reserves resulting in poor quality fruit. The use of 1°C and 1-MCP treatments maintained fruit quality. / Thesis (M.Sc.Agric.)-University of KwaZulu-Natal, Pietermaritzburg, 2011.

The aim of the study was to explore the methods used in horticultural therapy gardens in rehabilitating people suffering from fatigue syndrome. Nine horticultural therapy gardens were contacted of wich three chose to participate. Using case study as method e-mail interviews was carried out with the participants about their establishment and what kind of theories they based their methods upon. The material collected from the interviews was complemented with additional data from the establishments web pages and information pamphlets. Collected data was processed trough content analysis and then formed as background for the development of a program theory for horticultural therapy. The results show some variations in how the different establishments practice horticultural therapy and how they assess and follow up their work. The program theory of horticultural therapy contains gardening and residing in the garden, conversational therapy, autogenic exercise and stress managment. These activities are expected to lead to a higher degree of self perception, a reevaluation of one´s conceptions and higher self esteem. Through these activities the participants are given an increased ability to handle their lives, which in turn is thought to make it possible for them to return to work or studies. The abcense of clearly defined goals with the rehabilitation makes it difficult to determine how effective it is in bringing people with fatigue syndrome back to work. / Syftet med studien var att undersöka hur trädgårdsrehabilitering tillämpas av några verksamheter för att göra en jämförelse i syfte att påvisa likheter och skillnader. Nio verksamheter kontaktades varav tre valde att delta. En fallstudie utfördes där de tre verksamhetsansvariga intervjuades via e-post om sina verksamheters organisation och grundfilosofi samt hur verksamheten utväderades och följdes upp. Som komplement till intervjuerna granskades även verksamheternas presentationer av sig själva på hemsidor och i broschyrer. Resultatet ger en bild av hur tre verksamheter som bedriver trädgårdsrehabilitering för utmattningsdrabbade är utformade, samt i vilken utsträckning de gör utvärderinga och uppföljningar. Gemensamma inslag i rehabiliteringen var trädgårdsvistelse/aktiviteter, hantverksaktiviteter, samtal, stresshantering och avslappningsövningar. Utvärderingar och uppföljningar skedde i varierande grad och med olika mätinstrument. Som en del i att försöka tydliggöra de tänkta verkningsmekanismerna i trädgårdsrehabiliteringen och ge en översiktlig bild av metoden, utformades även en programteori. Den utgår från verksamheternas metoder samt vetenskaplig evidens inom området. Programteorin visar hur de tänkta aktiviteterna förväntas leda fram till slutresultatet. Den, för trädgårdsrehabilitering, utformade programteorin innehåller vistelse i trädgård och trädgårdsarbete, samtalsterapi, avslappningsövningar och stresshantering. Aktiviteterna förväntas leda till en ökad självinsikt, ett ändrat förhållningssätt och en bättre självkänsla, och genom det en ökad förmåga att hantera sin livssituation. Detta antas ge de förutsättningar som behövs för att kunna återgå till arbetsliv eller studier, alternativt fortsätta rehabiliteringen med arbetsträning. Avsaknaden av tydliga, mätbara mål med rehabiliteringen gör det svårt att värdera hur effektiv rehabiliteringsformen egentligen är på att återinföra utmattningsdrabbade i arbetslivet.

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