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Rozprawy doktorskie na temat „Leafy vegetable”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Mahlangu, Sandile Alexandra. "Production and commercialisation potential of indigenous leafy vegetables : case study of Capricorn District in the Limpopo Province, South Africa." Thesis, University of Limpopo, 2014. http://hdl.handle.net/10386/1332.

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Thesis (MSc. (Agricultural Economics)) -- University of Limpopo, 2014<br>There are few plant species commercialised significantly globally and food requirements are mainly met by only few species. However, there is an enormous number of under-utilised species that play a vital role in the livelihood of rural households. These species are referred to as indigenous crops. Indigenous crops are adaptable to local agro-ecological conditions even where there is unreliable rainfall, which is the case in many parts of the country, require a minimum production management, mature early, and are easy to

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2

DeNiro, Julia L. "Airborne Transport of Foodborne Pathogens from Bovine Manure to Vegetable Surfaces." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1376925440.

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CONSENTINO, Beppe Benedetto. "BIOFORTIFICATION AND INNOVATIVE SUSTAINABLE AGRONOMIC PRACTICES TO ENHANCE YIELD AND QUALITY OF LEAFY AND FRUITING VEGETABLES." Doctoral thesis, Università degli Studi di Palermo, 2022. https://hdl.handle.net/10447/575969.

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Fu, J. "Effects of different harvest start times on leafy vegetables (Lettuce, Pak Choi and Rocket) in a reaping and regrowth system." Lincoln University, 2008. http://hdl.handle.net/10182/670.

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Leafy vegetables, lettuce (Lactuca sativa L. cv. Green Oakleaf), pak choi (Brassica sinensis L. cv. Oriental Taisai) and rocket (Eruca sativa L.), were planted in an open field at Lincoln University on January 2005. Plants were harvested at 5 cm cutting height above the growing point with three different harvest start times, early start (ES), mid start (MS) and late start (LS) of harvest respectively. There were three harvests during the growing season with a 4-week interval between harvests. Generally, lettuce produced significantly higher total FW/plant (208 g) than pak choi or rocket (123

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5

Anele, Mayekiso. "Production of Indigenous Leafy Vegetables (ILVs) and their contribution to household food security: evidence from Coffee Bay, Eastern Cape Province of South Africa." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/712.

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This study used cross-sectional survey data to estimate farmers` perceptions of, and commonly cultivated ILVs, factors that influence the participation of smallholder famers in the production of Indigenous Leafy Vegetables and its contribution to household food security]. With regard to farmers` perceptions of ILVs, descriptive results reveal that a majority of the people from the study area share positive perceptions with respect to ILVs. Regression estimates for determinants of participation indicate that the production of ILVs is primarily conditioned by shared perceptions and institutional

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6

GIRO, ANDREA. "DOUBLE ROLE OF CORCHORUS OLITORIUS (L.) CULTIVATED IN FLOATING SYSTEM: New leafy vegetable for “ready to eat” industry or active food for developing country." Doctoral thesis, Università degli Studi di Milano, 2017. http://hdl.handle.net/2434/481162.

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C. olitorius is a traditional African leafy vegetable (ALV). It has interesting nutraceutical properties and is widely consumed among the African and South-East Asia populations. It is commonly cultivated through a conventional way: in the open field. Hydroponic cultivation systems optimize production inputs (water - fertilizer), but they also foster the production and the quality yield. Moreover, hydroponic systems improve shelf life and thus reduce food waste. For this thesis, a floating system cultivation method has been investigated to grow C. olitorius, commercially known as “baby leaf”.

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Sriwichai, Wichien. "Déterminants de la bioaccessibilité des caroténoïdes et tocophérols de légumes feuilles : comparaison variétale et influence du procédé." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT176.

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La carence en vitamine A est un problème de santé publique dans de nombreux pays et elle touche particulièrement les groupes vulnérables. Un régime alimentaire varié permet de lutter durablement contre cette carence. Les fruits et légumes ont un rôle important dans ce contexte. Certains caroténoïdes provitaminiques peuvent participer à la couverture des besoins en vitamine A. Leur faible absorption intestinale et conversion en vitamine A est un facteur limitant. Cette thèse avait pour objectif, tout d’abord, d’identifier les déterminants de la bioaccessibilité des caroténoïdes (β-carotène et l

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8

Jansen, van Rensburg WS, Averbeke W. Vab, R. Slabbert, et al. "African leafy vegetables in South Africa." Water SA, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000817.

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In this article the term ‘African leafy vegetables’ was adopted to refer to the collective of plant species which are used as leafy vegetables and which are referred to as morogo or imifino by African people in South Africa. Function is central in this indigenous concept, which is subject to spatial and temporal variability in terms of plant species that are included as a result of diversity in ecology, culinary repertoire and change over time. As a result, the concept embraces indigenous, indigenised and recently introduced leafy vegetable species but this article is concerned mainly with the

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9

Amoussa, Hounkpatin Waliou B. A. "Évaluation du potentiel de couverture des besoins en vitamine A des jeunes enfants à partir des sauces accompagnant les aliments de base consommés au Bénin." Thesis, Montpellier 2, 2011. http://www.theses.fr/2011MON20160/document.

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L'identification et l'amélioration du potentiel pro-vitaminique A des sauces accompagnant les aliments de base pourraient constituer une voie alimentaire de lutte contre la carence en vitamine A (CVA) chez les jeunes enfants au Bénin. La qualité nutritionnelle et la rétention en provitamines A des sauces lors des procédés traditionnels de préparation ont été évaluées au moyen d'une démarche itérative terrain et laboratoire. Une enquête de consommation alimentaire par pesées et mesures anthropométriques auprès de 420 enfants a permis d'évaluer l'état nutritionnel des sujets et l'adéquation des

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10

Palumbo, John. "Management of Aphids and Thrips on Leafy Vegetables." College of Agriculture, University of Arizona (Tucson, AZ), 1999. http://hdl.handle.net/10150/221610.

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Research has been conducted at the Yuma Agricultural Center for the past 5 years to gain an understanding of aphid and thrip population dynamics in spring lettuce, spinach and Cole crops. This information coupled with insecticide efficacy studies has allowed us to formulate recommendations for managing these serious pests of leafy vegetables. Provided below is information on species composition, sampling and chemical control of aphids and thrips. This paper should provide guidelines for pest control advisors and growers in making management decisions.

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Matheron, Michael E., and Martin Porchas. "Performance of Products for Management of Sclerotinia Leaf Drop of Lettuce in 2002." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2002. http://hdl.handle.net/10150/214955.

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Sclerotinia leaf drop in Arizona is caused by two soil-borne fungi, Sclerotinia minor and S. sclerotiorum. Moist soil and moderate temperature favor this disease. Some new products in development were evaluated for control of leaf drop on lettuce during the winter vegetable growing season of 2001-2002. Sclerotia of each pathogen were applied to plots after thinning and just before the first of two applications of test compounds. Significant reduction of Sclerotinia leaf drop caused by S. minor occurred in plots treated with Endura, whereas other products tested against this pathogen did not si

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12

Tengku, Muda Mohamed Mahmud. "Acclimation of leafy vegetables for post-harvest quality retention." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308305.

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13

Croft, Marcia M. "The role of African leafy vegetables in food security." Thesis, Purdue University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10245801.

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<p> African leafy vegetables (ALVs) are a diverse set of crops grown across sub-Saharan Africa. They have been a staple of traditional diets and contain many critical micronutrients but their importance has been largely ignored by researchers and policymakers at the expense of imported crops. Availability, accessibility, and utilization of ALVs are limited by factors across the supply chain. This research investigated seed systems, drought tolerance, hydroponic production, market barriers, consumer preference, and the impact of gender as related to ALVs. We found that ALVs play an importan

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14

Hui, Ming-leung, and 許明亮. "Livestock waste and sewage sludge for growing local leafy vegetables." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31214137.

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15

Ibrahim, Faozia. "Interaction of bacteria with growing salad vegetables and leafy herbs." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416288.

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16

Ilic, Sanja. "Post-harvest Interventions and Food Safety of Leafy Green Vegetables." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313509920.

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17

Hui, Ming-leung. "Livestock waste and sewage sludge for growing local leafy vegetables /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19667395.

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18

Velez, Rivera Edwin. "A review of chemical disinfection methods for minimally processed leafy vegetables." Thesis, Manhattan, Kan. : Kansas State University, 2005. http://hdl.handle.net/2097/103.

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Bélanger, Julie. "Green leafy vegetables of rural India: ethnobotany and contribution to eye health." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=92338.

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Recognition of the contribution of biological diversity to human health demands more scientifically sound evidence than currently exists, while the multifactorial nature of this relationship calls for innovative research frameworks. This thesis presents a multidisciplinary case study on the contribution of elements of biological diversity, namely wild and cultivated leafy vegetables, towards age-related cataract prevention in a rural developing country context. At the center of this thesis, an ethnobotanical study identified determinants of consumption of leafy vegetables and demonstrated how

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20

ANSAH, FRANCISCA ABA. "Effect of minimal processing steps and operation modes on quality of leafy vegetables." Doctoral thesis, Università di Foggia, 2018. http://hdl.handle.net/11369/363316.

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Minimal processing and storage of leafy vegetables are limited by several quality challenges despite numerous research interventions. Some studies have assessed pre-harvest and postharvest effects on quality of raw material and sometimes also on quality and shelf-life of the resulting processed product, however, the information on effect of the processing steps on its quality is lacking. This study, assessed the effect of operation modes, processing steps and storage on the nutritional, sensorial and microbial quality of minimally processed rocket leaves and cut lettuce. Rocket leaves and Lett

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21

Palumbo, John C., Andreas Amaya, Luis Ledesma, Leonardo Chavez, Javier Ruiz, and Geraldo Villegas. "Foliar Activity of Assail®, Fulfill® and Flonicamid® on Aphids in Leafy Vegetables." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/215229.

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Several small-plot studies were conducted in the spring of 2004 to compare the residual efficacy of several new reduced risk insecticides against aphids infesting desert head lettuce. In 4 head lettuce trials and one broccoli trial, economic aphid control was consistently achieved following foliar applications with flonicamid and Assail. These compounds provided good knockdown of aphids when applied relatively early in lettuce plant development and aphid population growth. Fulfill was less consistent and performance was reliant on correct spray timing. Collectively, the chemical attributes and

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22

Osei, Jennifer. "Potential contribution of African leafy vegetables to the nutritional status of children / J. Osei." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9191.

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Background: Children in South Africa are still affected by micronutrient deficiencies and children living in farm communities are especially vulnerable. African Leafy Vegetables (ALVs) are well endowed with micronutrients such as iron, zinc and vitamin A and might contribute to the nutritional status of children. However, these vegetables have been perceived as “poor people’s food” and over the years knowledge of and use of ALVs has decreased. Aim: This study assessed the potential contribution of ALVs to the nutritional status of children in a semi-rural farm community. Method: In this cros

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23

Rodríguez-Casas, Julio. "Response of leafy winter vegetables to water and nitrogen inputs under subsurface trickle irrigation." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186683.

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Arizona is ranked third in the nation in fresh vegetable production, however, overfertilization and overirrigation have been common practices used to maintain adequate yields and crop quality. Concern for groundwater contamination, water availability and costs have made it necessary to increase water and nitrogen (N) use efficiency. The objectives of this research were: 1. optimize water and N inputs applied through a subsurface trickle irrigation system to leaf lettuce, spinach and collards. 2. evaluate water and N effects on midrib nitrate (NO₃-N) concentration as a tool for monitoring plant

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24

Pradhan, Sudhan. "Studies on Some Wild Leafy Vegetables of Sikkim with Reference to Ecological Distribution and Nutritional Composition." Thesis, University of North Bengal, 2013. http://hdl.handle.net/123456789/1510.

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Vorster, Halina Johanna. "The role and production of traditional leafy vegetables in three rural communities in South Africa." Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-02122009-115129/.

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Dlamini, Vukile Vinah. "Adult women in Eluyengweni Swaziland : their food practices and knowledge of indigenous green leafy vegetables." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/60802.

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Concern regarding the decline in the knowledge and use of indigenous green vegetables exists in many southern African regions including Swaziland. Reasons for this are, amongst others, attributed to a lack of inter-generational knowledge transfer, the influence of westernisation and changing food values and attitudes, as people nowadays regard indigenous green leafy vegetables as a low status food. It is imperative that knowledge of these foods be documented before it is lost to future generation. Indigenous green leafy vegetables have long been considered healthier options than the many recen

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Leke, Walter N., Djana B. Mignouna, Judith K. Brown, and Anders Kvarnheden. "Begomovirus disease complex: emerging threat to vegetable production systems of West and Central Africa." BioMed Central, 2015. http://hdl.handle.net/10150/610266.

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Vegetables play a major role in the livelihoods of the rural poor in Africa. Among major constraints to vegetable production worldwide are diseases caused by a group of viruses belonging to the genus Begomovirus, family Geminiviridae. Begomoviruses are plant-infecting viruses, which are transmitted by the whitefly vector Bemisia tabaci and have been known to cause extreme yield reduction in a number of economically important vegetables around the world. Several begomoviruses have been detected infecting vegetable crops in West and Central Africa (WCA). Small single stranded circular molecules,

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Kerns, David L., and John C. Palumbo. "Confirm and Success: New Tools for Insect Management in Cole Crops and Leafy Green Vegetables in Arizona." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/146759.

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Van, Averbeke W., Tshikalangem TE, and KA Juma. "The commodity systems of Brassica rapa L. subsp. chinensis and Solanum retroflexum Dun. in Vhembe, Limpopo Province, South Africa." Water SA, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000785.

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Using farmer surveys the smallholder commodity systems of Brassica rapa L. subsp. chinensis and Solanum retroflexum Dun. in Vhembe District, Limpopo Province, South Africa were described and analysed. Production, transaction and consumption of the two vegetables were deeply embedded in the food, trade and farming systems of local people. The cultivation systems, which appeared effective, were developed by borrowing elements from the systems of other crops to which new knowledge specific to B. chinensis and S. retroflexum were added. Several elements of the production systems that could benefit

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Garcia, Neto Júlio. "Concentrações e fontes de silício foliar na produção e na qualidade do agrião e do almeirão." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/153861.

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Submitted by JULIO GARCIA NETO (tec.juliogarcia@ifma.edu.br) on 2018-05-03T00:36:56Z No. of bitstreams: 1 Dissertacao_Julio_Garcia_Neto_2018.pdf: 913083 bytes, checksum: 5a833ab7fa1d0e34d10d5321c04c4640 (MD5)<br>Approved for entry into archive by Alexandra Maria Donadon Lusser Segali null (alexmar@fcav.unesp.br) on 2018-05-04T17:23:54Z (GMT) No. of bitstreams: 1 garcianeto_j_me_jabo.pdf: 913083 bytes, checksum: 5a833ab7fa1d0e34d10d5321c04c4640 (MD5)<br>Made available in DSpace on 2018-05-04T17:23:54Z (GMT). No. of bitstreams: 1 garcianeto_j_me_jabo.pdf: 913083 bytes, checksum: 5a833ab7fa1d

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Bupo, Ana Dinorah. "The development of an innovative culinary product prepared from green leafy vegetables for the urban consumer." Diss., University of Pretoria, 2020. http://hdl.handle.net/2263/73421.

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Indigenous or wild leafy vegetables are very nutritious foods which are underutilised. They have made a positive impact on the nutrient intake of local communities for many years due to their vitamin and mineral content, as well as their phytochemicals and antioxidants. The increase in the desire and need for convenience foods also makes it imperative that healthy options are made available amongst other convenience food products: time is valuable to the modern urban consumer, but issues of poor health attributed to convenience foods are on the rise around the world, especially obesity in Sout

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Kerns, David L., and Tony Tellez. "Evaluation of Knack for Aphid Control in Green Leaf Lettuce." College of Agriculture, University of Arizona (Tucson, AZ), 1999. http://hdl.handle.net/10150/219963.

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Knack was evaluated for its potential for regulating aphid populations in green leaf lettuce. However, Knack did not appear to be a viable control option, and probably did not work due to an inability to deliver the material where the aphids were on the underside of the lower leaves. A soil injection treatment of Admire at planting, and a foliar standard of Warrior + Endosulfan applied at the initiation of aphid colonization and again 14 later, were highly effective treatments.

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Kerns, David L., and Tony Tellez. "Evaluation of New Insecticides for Aphid Control in Green Leaf Lettuce." College of Agriculture, University of Arizona (Tucson, AZ), 1999. http://hdl.handle.net/10150/219976.

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New soil injected and foliar insecticides were evaluated for their efficacy towards potato aphids in green leaf lettuce. The soil injected insecticides, Platinum and V10066, both appear to be viable alternatives to Admire, providing effective aphid control through harvest or ca. 90 days post-planting. Two foliar applications of Acetamiprid or Aphistar timed ca. 14 days apart beginning at the onset of aphid colonization provided superior aphid control over Provado or Fullfill, and control similar to that of the soil injected insecticides.

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Merget, Bernhard. "Assessing the risk of leafy green vegetables as a transmision pathway of verocytotoxigenic Escherichia coli to consumers." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=233893.

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Verocytotoxigenic Escherichia coli (VTEC) is a major cause of diarrheal infections. It is increasingly associated with the consumption of fresh produce and responsible for several international outbreaks with severe sequelae. Quantitative risk assessment (QRA) aim to evaluate the risk of contamination, quantify uncertainties and identify potential mitigation steps. Current published QRA focus on post-harvest process steps without consideration of pre-harvest factors. This study aimed to identify preharvest knowledge gaps and quantify the potential for growth of VTEC in plant tissue prior to ha

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Matheron, Michael E., and Martin Porchas. "Evaluation of Products to Manage Sclerotinia Leaf Drop of Lettuce in 2001." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2001. http://hdl.handle.net/10150/214916.

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Sclerotinia leaf drop in Arizona is caused by two soil-borne fungi, Sclerotinia minor and S. sclerotiorum. Moist soil and moderate temperature favor this disease. Some new products in development were evaluated for control of leaf drop on lettuce during the winter vegetable growing season of 2000-2001. Sclerotia of each pathogen were applied to plots after thinning and just before the first of two applications of test compounds. A high level of disease control in the S. minor plots occurred with an appropriate concentration of Plantpro 45, Fluazinam, Contans, BAS 510, BAS 510+BAS 500, Medallio

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Matheron, Michael E., and Martin Porchas. "Evaluation of Products to Manage Sclerotinia Leaf Drop of Lettuce in 2003." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2003. http://hdl.handle.net/10150/214971.

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Sclerotinia leaf drop in Arizona is caused by two soil-borne fungi, Sclerotinia minor and S. sclerotiorum. Moist soil and moderate temperature favor this disease. Some registered products as well as new chemistries in development were evaluated for control of leaf drop on lettuce during the winter vegetable growing season in 2002-2003. Sclerotia of each pathogen were applied to plots after lettuce thinning and just before the first application of test compounds. In plots infested with Sclerotinia minor, all materials tested at an appropriate rate significantly reduced disease. The best treatme

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Matheron, Michael E., and Martin Porchas. "Evaluation of New Fungicides for Management of Sclerotinia Leaf Drop of Lettuce in 1999." College of Agriculture, University of Arizona (Tucson, AZ), 1999. http://hdl.handle.net/10150/219972.

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In Arizona, Sclerotinia leaf drop of lettuce is caused by two different species of fungi, Sclerotinia minor and S. sclerotiorum. Relatively cool and moist environmental conditions favor this disease. Some new fungicides in development were evaluated for control of leaf drop on lettuce during the winter vegetable growing season of 1998-99. Sclerotia of each pathogen were applied to plots after thinning and just before the first of two applications of test compounds. The final severity of leaf drop in these trials was moderately high. Significant reduction in the final count of dead lettuce plan

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Wood, Jayde Lian. "Examination of microbiological quality of in-field leafy vegetables and identification of on-farm generic Escherichia coli transmission dynamics." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44613.

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Fresh produce has increasingly been linked to foodborne outbreaks in North America. Although contamination of produce may occur at any point along the food continuum, significant risks are thought to occur at the farm level. Data illustrating bacterial transmission dynamics on farm, however, are lacking. The aim of this project was to produce baseline data describing the occurrence of indicator bacteria on in-field leafy vegetables; examine antimicrobial resistance (AMR) of recovered Escherichia coli; and identify on-farm microbiological reservoirs impacting leafy vegetables. In-field plants (

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39

Zhao, Xin. "Exploring the effects of high tunnels and organic production systems on production and quality attributes of leafy vegetables in Kansas /." Search for this dissertation online, 2006. http://www.lib.umi.com/cr/ksu/main.

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Shang, Hongshan. "Efficacy of Pre-harvest Applications of Electrolysed Water and Other Chemical Sanitisers in inactivating Foodborne Pathogens on Leafy Green Vegetables." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29323.

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This thesis aims to develop pre-harvest control strategies against foodborne pathogens in order to improve leafy green vegetables (LGV) safety. To do this a series of experiments were carried out. 1) The efficacy of the pre-harvest use of electrolysed water (E-water), 1-Bromo-3-chloro-5,5-dimethylhydantoin (BCDMH) and peroxyacetic acid (PAA) against plant microbiota, non-pathogenic Escherichia coli M23, Listeria innocua, and the spoilage microorganism Pseudomonas fluorescens on commercial LGVs was assessed in a greenhouse trial. (2) Sanitation efficacy by E-water, BCDMH and PAA against LGV-ass

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41

Van, der Walt Anna Margaretha. "Fusarium in subsistence agro-environments, African dark green leafy vegetables (morogo) and consumer health : an ecological approach / A.M. van der Walt." Thesis, North-West University, 2008. http://hdl.handle.net/10394/1938.

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Wafula, Eliud Nalianya [Verfasser], and Sascha [Akademischer Betreuer] Rohn. "Effects of Postharvest-Processing Technologies on the Safety and Quality of African Indigenous Leafy Vegetables / Eliud Nalianya Wafula ; Betreuer: Sascha Rohn." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2017. http://d-nb.info/1143868668/34.

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Valerio, Maria Concetta <1980&gt. "Redox regulation in leaf starch metabolism. New insights into chloroplast Beta-amylase family." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/2034/1/Valerio_Concetta_tesi.pdf.

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Valerio, Maria Concetta <1980&gt. "Redox regulation in leaf starch metabolism. New insights into chloroplast Beta-amylase family." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/2034/.

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Umeda, Kai. "Screening New Herbicides for Weed Control in Head and Leaf Lettuces and Broccoli." College of Agriculture, University of Arizona (Tucson, AZ), 2000. http://hdl.handle.net/10150/220399.

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In preemergence (PREE) herbicide testing, all three lettuces, head, romaine, and red leaf, exhibited some tolerance to carfentrazone, sulfentrazone, flumetsulam, rimsulfuron, and thifensulfuron while giving effective weed control. In postemergence (POST) testing, cloransulam and flumetsulam controlled weeds at the lowest applied rates while lettuces were safe to cloransulam at 0.01 lb AI/A and flumetsulam at 0.03 lb AI/A. Imazamox was safe on lettuces at 0.01 lb AI/A and controlled weeds at 0.007 lb AI/A. For broccoli, sulfentrazone, fluroxypyr, and thifensulfuron applied PREE demonstrated rea

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Doerge, Thomas A., Kevin H. Pritchard, and Ted W. McCreary. "Nitrogen Management in Drip Irrigated Leaf Lettuce, Spinach and Green Crops." College of Agriculture, University of Arizona (Tucson, AZ), 1992. http://hdl.handle.net/10150/214500.

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Preliminary nitrogen (N) management experiments with spinach, leaf lettuce, romaine collard and mustard were conducted on a Casa Grande s.l. soil at the Maricopa Agricultural Center in the winter and spring of 1990-91. The purpose of this N rate experiment was to develop initial Best Management strategies for N fertilizer use for emerging high value crops grown in Arizona using subsurface drip irrigation. Three rates of urea, ammonium nitrate were applied to each cultivar to provide deficient (N1), adequate (N2) and supraoptimal real (N3) levels of N. All cultivars responded dramatically to th

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Tsai, Zong-Ye, and 蔡宗燁. "The growth characteristic of aeroponically-grown six leafy vegetable." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/76345199295315166406.

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碩士<br>國立中興大學<br>農藝學系所<br>104<br>A plant factory is a controlled environment for plant production systems with artificial light, temperature, humidity, carbon dioxide, water supply, and nutrients. Due to the high operation and start-up cost of plant factories, the plant factory system is most often used to cultivate leafy vegetables that have a high-profit return and require to develop a more efficient production systems. In this study, five common lettuce cultivars including sword lettuce (Lactuca sativa L. var. sativa bisch), red fire lettuce (Lactuca sativa L. var. crispa cv Red Fire), butt

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Yan, Xin-Ting, and 顏鑫鋌. "Development of a Leafy Vegetable Planter in a Greenhouse." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5415021%22.&searchmode=basic.

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碩士<br>國立中興大學<br>生物產業機電工程學系所<br>107<br>Taiwan is located in subtropical and tropical regions. It is suitable to grow different crops. However, due to abnormal weather, disease and pests, crop growth would be easy to fail or to have poor quality. In 2010, the area of agricultural facilities in Taiwan was recorded to be 25 897 hectares. Therefore, the demand for working inside the greenhouse has been needed heavily. The purpose of this research was to develop a leaf vegetable planter attached to the tractor utilized in the greenhouse. The four-bar linkage is analyzed by a commercially availab

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Xu, Hao-Yun, and 許皓雲. "Study of Light Enviroment and Fertilizer on Leafy Vegetable Growth." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/01787175474679817830.

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碩士<br>亞洲大學<br>光電與通訊學系<br>104<br>ABSTRACT Light environment and fertilizer condition are two important conditions for plant growth, this study leaf cultivation, for example, to plant small plants cultivated environment, respectively to medium soil tillage and planting different hydroponic leafy vegetables, observe and analyze these two conditions on plant growth. First, investigate the effect of ambient light on the leafy plant growth scenario, in two different wavelength LED light board to provide a combination of light needed for photosynthesis of plants were planted way medium soil tillage,

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Chen, Shin-Ru, and 陳信儒. "A Study on Control Systems of Cutter-height for Leafy Vegetable Harvesting." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/wv6pu6.

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碩士<br>國立臺灣大學<br>生物產業機電工程學研究所<br>106<br>According to COA''s statistics, agricultural manpower population aged 50 to 64 accounts for 44.5% of the total agricultural manpower population. This data highlights the issue of agricultural manpower structure. For example, an aging agricultural population and labor force migration have made the timely harvesting of crops more challenging. Farmers who miss the optimum harvest time will often harvest crops of poorer quality. Furthermore, under the current government policy, the agricultural labor force is not legally approved. Moreover, problems

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