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Aspekte van die bemarking van Suid-Afrikaanse sitrus28 September 2015 (has links)
M.Com. (Business Economics) / Please refer to full text to view abstract
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Aspectos agronômicos e qualitativos de genótipos de citros cultivados no agreste meridional de PernambucoMEDEIROS, Renata Cristina 15 February 2012 (has links)
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Previous issue date: 2012-02-15 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / The citrus industry is one of the most important agricultural activities to Brazil, considering economic and social aspects. For production of fresh market fruit, there is little diversity of studies in Brazil, and investments are insufficient to change that. The northeastern region is fortunate to have the best conditions for development of the culture, and the micro-region around Garanhuns County, in Pernambuco Estate, has a great potential for the production of citrus fruits, for table consuming, because of the favourable soil and climatic conditions. The objective of this study was to evaluate the varieties of citrus, for table consuming, at the conditions of Southern Agreste region of Pernambuco, on agronomic parameters and physical characteristics, chemical and physico-chemical characteristics of fruits, in order to support the selection of genotypes for the region and contribute to the diversification of fruit plantation. The Citrus collection where the experiment took place is located at the Experimental Station of Brejão, which belongs to the Agricultural Institute of Pernambuco (IPA). For the study of the collection were used morphological descriptors proposed for citrus. Was measured the physical characteristics of the fruits: shape, epicarp color, height and diameter, fruit mass, thickness of the epicarp, mesocarp thickness, number of seeds per fruit and juice yield. Regarding physicalchemical and chemical parameters, were evaluated total soluble solids, titratable acidity, content of ascorbic acid (vitamin C) and hydrogenic potential. To evaluate plant growth, the variables chosen were stem diameter above and below the graft, plant height and canopy volume. The experimental design was randomized blocks with four replications and one plant per plot, being spaced 6x4 m. The treatments consisted in 15 varieties of oranges, two of lime and one of lemon. It was revealed that six varieties studied are within the requirements of the Brazilian Program for the Improvement Standards and Commercial Packaging of horticultural and five varieties of oranges had different maturation than is usually reported in the literature. / A citricultura é uma das atividades agrícolas de maior importância econômica e social para o Brasil. Para produção de frutas de consumo “in natura”, há pouca diversidade de estudos no Brasil, e os investimentos são insuficientes para mudar este quadro. A região nordeste é privilegiada por dispor das melhores condições para desenvolvimento da cultura, e a microrregião de Garanhuns, em Pernambuco, apresenta potencial para a produção de frutos cítricos de mesa, devido suas condições edafoclimáticas. Objetivou-se com este trabalho avaliar as variedades de citros de mesa nas condições edafoclimáticas da região Agreste Meridional de Pernambuco, mediante parâmetros agronômicos e características físicas, físicoquímicas e químicas dos frutos, visando dar suporte à seleção de genótipos para a região e contribuir com a diversificação da fruticultura. A coleção de Citros onde foi realizado o experimento está implantada na Estação Experimental de Brejão, pertencente ao Instituto Agronômico de Pernambuco (IPA). Para o estudo da coleção foram utilizados descritores morfológicos propostos para os citros. Foram aferidas as características físicas dos frutos como: formato; coloração do epicarpo; altura e diâmetro; massa do fruto; espessura do epicarpo mais mesocarpo; espessura do endocarpo; número de sementes por fruto e rendimento em suco. Para as análises físico-químicas e químicas foram avaliados: sólidos solúveis, acidez titulável, teor de ácido ascórbico (vitamina C) e potencial hidrogênionico. Nas plantas as variáveis de crescimento avaliadas foram: diâmetro do caule acima e abaixo da linha de enxertia, altura da planta e volume da copa. O delineamento experimental adotado foi em blocos ao acaso, com quatro repetições e uma planta por parcela, sendo espaçadas 6x4 m. Os tratamentos foram compostos por 15 variedades de laranjas, duas de limas e uma de limão. Foi revelado que das variedades estudadas, apenas seis laranjas, as limas e o limão estão dentro das exigências do Programa Brasileiro para a Modernização da Horticultura e que cinco variedades de laranjas apresentaram maturação diferente das relatadas na literatura.
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Yitronot la-godel ule-hitmaḥutṿe-opṭimizatsyah shel miḳum bate-arizah le-tapuzim ṿe/o le-eshkoliyot ...Kedar, Mordechai. January 1972 (has links)
M.A. thesis. Hebrew University, Jerusalem. / Cover title: Economies of scale and of specialization and an improved "Stollsteimer" location model for orange and/or grapefruit packinghouses. At head of title: Miʹsrad ha-ḥaḳlaʼut ha-Sokh.ha-Y. Summary in English. Includes bibliographical references.
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Export citrus packaging and a study of the suitability of shooks produced from South African grown pinus radiata and pinus patula for this purposeBosman, Daniel Lowne. January 1963 (has links)
Thesis accepted for the Degree of Doctor of Science in Forestry at the University of Stellenbosch. / Research project sponsored by the South African Lumber Millers' and Shook Manufacturers' Association, and the South African Council for Scientific and Industrial Research.
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An investigation into why coccidoxenoides peregrinus (timberlake) (hymenoptera:encyrtidae) is an effective biological control agent in Queensland citrus /Ceballo, Flor Angel Aquino. January 2001 (has links) (PDF)
Thesis (Ph. D.)--University of Queensland, 2002. / Includes bibliographical references.
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Evaluation of Ethiopian plant extracts, Acacia seyal and Withania somnifera, to control green mould and ensure quality maintenance of citrus (Citrus sinensis L.)Mekbib, SB Regnier Thierry J.C., Sivakumar Dharini, Korsten Lise, Regnier, TJC, Sivakumar, D, Korsten, L 10 February 2009 (has links)
Abstract
Introduction. Green mould, Penicillium digitatum (Pers.: Fr.) Sacc., causes economically
important postharvest disease in citrus. Materials and methods. Ethiopian plant extracts of Acacia
seyal (Del. Var. Seyal) and Withania somnifera (L.) Dual were used to test the control of green mould
in wound-inoculated fruit, stored for 21 d at 7 °C and at > 85% RH. The chemical compositions of the
two extracts were determined using high-performance chromatography. Thereafter, freshly harvested
(naturally infected) fruit were subjected to different postharvest treatments and stored for 50 d to investigate
the effects of the two plant extracts on fruit quality parameters. Treatments included (pre-wax
+ leaf extracts), (wax + leaf extracts incorporated into wax, Citrosol A®), (leaf extract alone), (fruit
washed in chlorinated water at 5.25%), (untreated fruit) and (commercially treated fruit). Results.
Extracts of A. seyal and W. somnifera reduced the incidence of green mould by 56.1% and 50%, respectively,
in wound-inoculated fruit. A. seyal extract contained a high concentration of gallic acid
(60.3 mg·mL–1) whilst W. somnifera contained low concentrations of caffeic acid (8.7 mg·mL–1), salicylic
acid (6.3 mg·mL–1) and 3,4 dihydroxy benzoic acid (3.8 mg·mL–1). Green mould was absent in
naturally infected fruit subjected to (pre-wax + leaf extracts), (wax mixed with leaf extracts) and (leaf
extracts) treatments. (Pre-wax + leaf extracts) and (wax mixed with leaf extract) treatments significantly
reduced weight loss; retained firmness and colour; and they maintained eating qualities and a maturity
index (SSC/TA) similar to commercial treatment. Conclusion. Both extracts of A. seyal and
W. somnifera showed potential to be used as an alternative in combined applications with wax application
under low temperature storage to replace synthetic fungicides, to ultimately control green mould
and retain overall fruit quality.
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Algae and their effect upon the growth of citrus seedlingsBreazeale, John McFall January 1929 (has links)
No description available.
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Home Citrus in Central ArizonaTate, Harvey F., True, Lowell 02 1900 (has links)
This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.
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Topworking Citrus and Other TreesTate, Harvey F. 10 1900 (has links)
This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.
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The effect of storage conditions on germination and viability of sour orange and rough lemon rootstock seedsHeaty, Abdul Latif Rahim, 1938- January 1963 (has links)
No description available.
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