Made available in DSpace on 2014-06-11T19:33:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-10-06Bitstream added on 2014-06-13T20:25:32Z : No. of bitstreams: 1 souza_jo_dr_jabo.pdf: 280960 bytes, checksum: 59592e09c2bb61db6b560216e9d73b45 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Os objetivos do trabalho foram identificar raças de Bremia lactucae agente causal do míldio no período de 2006 a 2007, na região produtora de alface do Estado de São Paulo; obter linhagens de alface-crespa resistentes. Os experimentos de campo foram realizados no Setor de Olericultura e Plantas Aromático-Medicinais e no Laboratório de Melhoramento Genético de Hortaliças, do Departamento de Produção Vegetal da UNESP-FCAV, Câmpus de Jaboticabal-SP. Foram coletados 36 isolados de B. lactucae em regiões produtoras do Estado de São Paulo, que permitiram identificar três novos comportamentos do fungo, dando origem a três novas raças: SPBl:02 (63/31/19/00), SPBl:03 (63/63/19/00) e SPBl:04 (63/63/03/00). Os genes Dm-14, Dm- 17, Dm-18, Dm-36, Dm-37 e Dm-38 conferem resistência a essas novas raças identificadas. As linhagens JAB 4-2-4, JAB 4-13-7 e JAB 4-13-9 apresentaram os melhores resultados de padrão de plantas e com resistência a B. lactucae. Os genótipos ‘Amanda’, ‘Solaris’, ‘Vanda’, ‘Vera’, JAB 4-13-7 e ‘Malice’ apresentaram melhores desempenhos das características agronômicas no inverno. Para as condições de verão, JAB 4-13-7 e ‘Solaris’ apresentaram melhores desempenhos das características agronômicas. JAB 4-13-7 é o mais indicado para o cultivo de inverno pelo bom desempenho e resistência às raças de B. lactucae. ‘Malice’ apresentou o pior comportamento produtivo, apesar da resistência às quatro raças de B. lactucae avaliadas / The aims of the study were to verify the emergence of races of B. lactucae casual agent of downy mildew in the period from 2006 to 2007 in lettuce-producing region in the State of São Paulo; to obtain lines lettuce with resistance to race SPBI:01; the performance of JAB 4-13-7 before the commercials cultivars as an option to allow for the cultivation of this genotype for both evaluation periods, in the conditions of Jaboticabal and check the resistance of lettuce genotypes to four races of Bremia lactucae. The field experiments were accomplished at the Section of Vegetables Crops and Aromatic-Medicinal Plants and in the Laboratory of Vegetable Breeding of the Department of Vegetable Production from the São Paulo State University at Jaboticabal (UNESP). The monitoring of B. lactucae allowed to identify three new behaviors of the fungus, resulting in three new races SPBI:02 (63/31/19/00), SPBI:03 (63/63/19/00) SPBI:04 (63/63/03/00). The genes Dm-14, Dm-17, Dm-18, Dm-36, Dm-37 and Dm-38, confer resistance to these new identified races. The lines JAB 4-2-4, JAB 4-13-7 and JAB 4-13-9 achieved the best results of standart plants with resistance to B. lactucae. The genotypes ‘Amanda’, ‘Solaris’, ‘Vanda’, ‘Vera’, JAB 4-13-7 and ‘Malice’ showed the best performances of agronomic traits in winter. For summer conditions, JAB 4-13-7 and ‘Solaris’ presented better performances of agronomic traits. The JAB 4-13-7 is the most suitable for the winter cultivation by good performance and resistance for the races of B. lactucae. ‘Malice’ had the worst productive performance, despite the resistance to the four races of B. lactucae evaluated

Orientador: Leila Trevizan Braz / Coorientador: Tagli Dalpian / Coorientador: Margarete Camargo / Banca: Arlete Marchi Tavares de Melo / Banca: Antonio Ismael Inácio Cardoso / Banca: Modesto Barreto / Banca: Érika Auxiliadora Giacheto Scaloppi / Resumo: Os objetivos do trabalho foram identificar raças de Bremia lactucae agente causal do míldio no período de 2006 a 2007, na região produtora de alface do Estado de São Paulo; obter linhagens de alface-crespa resistentes. Os experimentos de campo foram realizados no Setor de Olericultura e Plantas Aromático-Medicinais e no Laboratório de Melhoramento Genético de Hortaliças, do Departamento de Produção Vegetal da UNESP-FCAV, Câmpus de Jaboticabal-SP. Foram coletados 36 isolados de B. lactucae em regiões produtoras do Estado de São Paulo, que permitiram identificar três novos comportamentos do fungo, dando origem a três novas raças: SPBl:02 (63/31/19/00), SPBl:03 (63/63/19/00) e SPBl:04 (63/63/03/00). Os genes Dm-14, Dm- 17, Dm-18, Dm-36, Dm-37 e Dm-38 conferem resistência a essas novas raças identificadas. As linhagens JAB 4-2-4, JAB 4-13-7 e JAB 4-13-9 apresentaram os melhores resultados de padrão de plantas e com resistência a B. lactucae. Os genótipos 'Amanda', 'Solaris', 'Vanda', 'Vera', JAB 4-13-7 e 'Malice' apresentaram melhores desempenhos das características agronômicas no inverno. Para as condições de verão, JAB 4-13-7 e 'Solaris' apresentaram melhores desempenhos das características agronômicas. JAB 4-13-7 é o mais indicado para o cultivo de inverno pelo bom desempenho e resistência às raças de B. lactucae. 'Malice' apresentou o pior comportamento produtivo, apesar da resistência às quatro raças de B. lactucae avaliadas / Abstract: The aims of the study were to verify the emergence of races of B. lactucae casual agent of downy mildew in the period from 2006 to 2007 in lettuce-producing region in the State of São Paulo; to obtain lines lettuce with resistance to race SPBI:01; the performance of JAB 4-13-7 before the commercials cultivars as an option to allow for the cultivation of this genotype for both evaluation periods, in the conditions of Jaboticabal and check the resistance of lettuce genotypes to four races of Bremia lactucae. The field experiments were accomplished at the Section of Vegetables Crops and Aromatic-Medicinal Plants and in the Laboratory of Vegetable Breeding of the Department of Vegetable Production from the São Paulo State University at Jaboticabal (UNESP). The monitoring of B. lactucae allowed to identify three new behaviors of the fungus, resulting in three new races SPBI:02 (63/31/19/00), SPBI:03 (63/63/19/00) SPBI:04 (63/63/03/00). The genes Dm-14, Dm-17, Dm-18, Dm-36, Dm-37 and Dm-38, confer resistance to these new identified races. The lines JAB 4-2-4, JAB 4-13-7 and JAB 4-13-9 achieved the best results of standart plants with resistance to B. lactucae. The genotypes 'Amanda', 'Solaris', 'Vanda', 'Vera', JAB 4-13-7 and 'Malice' showed the best performances of agronomic traits in winter. For summer conditions, JAB 4-13-7 and 'Solaris' presented better performances of agronomic traits. The JAB 4-13-7 is the most suitable for the winter cultivation by good performance and resistance for the races of B. lactucae. 'Malice' had the worst productive performance, despite the resistance to the four races of B. lactucae evaluated / Doutor

Many studies have investigated the issue of feeding the world’s growing population from different perspectives. Conventional agricultural methods usually have small production yields while requiring large amounts of scarce and unevenly distributed resources such as farmland and water. Furthermore, although produced food may meet the demands, it is still inefficiently delivered among different regions. Urban agriculture has been proposed to produce food inside urban areas with higher yields and less resource consumption. Hydroponics is one of the urban farming methods that needs further research before being applied on large scales. This study aims to investigate the potential lettuce production using hydroponic systems to grow lettuce domestically in urban areas in Sweden to lower its lettuce import and motivate local food production to become self-sufficient. The study is performed using a literature review, theoretical design of a system, and scenario-based assessment of hydroponic lettuce production. The detailed analysis is performed via a case study of lettuce production in Uppsala municipality and two scenarios considering the reduction of lettuce import to Sweden and related challenges and opportunities of the designed system. The analyses demonstrate that the system paves the way to decrease lettuce import and dependence on trade. Therefore, applying the system increases self-sufficiency and decreases vulnerability to shocks. Nevertheless, the study does not necessarily address issues related to transportation and food miles. Moreover, finding suitable places to establish the system needs further studies.

Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-05-17T18:00:18Z No. of bitstreams: 1 DÉBORA SAMARA OLIVEIRA E SILVA - DISSERTAÇÃO PPGHT 2015..pdf: 2291176 bytes, checksum: 68508f58ce13106f63abc44d962e1a93 (MD5) / Made available in DSpace on 2018-05-17T18:00:18Z (GMT). No. of bitstreams: 1 DÉBORA SAMARA OLIVEIRA E SILVA - DISSERTAÇÃO PPGHT 2015..pdf: 2291176 bytes, checksum: 68508f58ce13106f63abc44d962e1a93 (MD5) Previous issue date: 2015-03-30 / A alface (Lactuca sativa L.) é a hortaliça folhosa mais produzida e consumida no Brasil, no entanto, necessita receber nutrientes que permitem o seu desenvolvimento. Desta forma, tornam-se necessários estudos sobre o uso de fontes orgânicas de adubo, como os biofertilizantes, e sua influência sobre os aspectos morfofisiológicos e de qualidade. Neste sentido, objetivou-se avaliar o efeito de diferentes concentrações de Spirufert® (fertilizante orgânico simples classe “A”, marca Tamanduá) sob a produção, fisiologia e qualidade póscolheita da alface „Elba‟. O experimento foi realizado em duas etapas no Centro de Ciências e Tecnologia Agroalimentar, em Pombal-PB. Na primeira etapa, estudou-se em condições de campo, no delineamento em blocos casualizados, o efeito de seis concentrações do Spirufert ® (0, 1,5, 3,0, 4,5, 6,0 e 7,5 %) distribuídos em seis blocos, sob aspectos de produção e fisiologia das mudas de alface. Na segunda etapa, analisada em laboratório, adotou-se o delineamento inteiramente casualizado, em parcelas subdivididas no tempo, com seis repetições. As parcelas foram constituídas pelas seis concentrações de Spirufert®, aplicadas durante o cultivo da alface, e as subparcelas, pelas épocas de avaliação (por ocasião da colheita e 24h após a permanência das alfaces sob prateleira em ambiente climatizado a 26°C). Não houve efeito significativo das concentrações de Spirufert® para as variáveis, número de folhas (NF), massa fresca da parte aérea (MFPA), altura de plantas (AP) e diâmetro da copa (DC), massa seca (MSPA), umidade (UMPA), massa fresca do sistema radicular (MFSR), comprimento de raiz (CR), massa seca do sistema radicular (MSSR), massa fresca total da planta (MFTP) e massa seca total da planta (MSTP) da parte aérea das plantas de alface. Da mesma forma, as concentrações de Spirufert® testadas não alteram o teor de N, P, K e Na, fotossíntese, concentração interna de CO2 e condutância estomática da parte aérea da alface. Houve efeito significativo entre as concentrações de Spirufert ® e as épocas de avaliação, no dia da colheita e 24h após a colheita da alface para a maioria das variáveis analisadas. Constatou-se maior média de SS na dose 4,5% de Spirufert®, na ordem de 4,16%, porém redução deste valor após 24h, em que se observou sinais de senescência nas alfaces, constatados pelo aumento da acidez titulável. Na dose 4,5% de Spirufert®, também observouse uma boa relação SS/AT e elevado teor de clorofila total, mesmo após 24 h, fato que possibilitou a manutenção da coloração verde nas folhas, característica apreciada pelo consumidor, por ocasião da aquisição. / Lettuce (Lactuca sativa L.) is the most widely produced and consumed leafy vegetable in Brazil, however, needs to receive nutrients that allow its development. In this way, it becomes necessary studies on the use of organic sources of fertilizer, such as biofertilizers, and its influence on the morphophysiological aspects and quality. In this sense, the objective was to evaluate the effect of different concentrations of Spirufert® (simple organic fertilizer class "A", anteater brand) in the production, physiology and lettuce postharvest quality 'Elba'. The experiment was conducted in two stages in the Science and Technology Centre Agrifood in Pombal-PB. In the first stage, was studied under field conditions in a randomized block design, the effect of six concentrations Spirufert ® (0, 1.5, 3.0, 4.5, 6.0 and 7.5%) distributed in six blocks, under aspects of production and physiology of lettuce seedlings. In the second stage, was analyzed in a laboratory, adopted a completely randomized design in split plot with six replications. The plots were made by the six concentrations of Spirufert®, applied for the cultivation of lettuce, and the subplots, the evaluation periods (at harvest and 24 hours after the permanence of lettuce under shelf in air-conditioned environment at 26 ° C). There was no significant effect of Spirufert® concentrations for the variables, number of leaves (NF), fresh weight of aerial part (MFPA), plant height (PH) and crown diameter (DC), dry matter (MSPA), humidity (umpa), fresh weight of the root system (MFSR), root length (CR), dry mass of the root system (MSSR), fresh pasta total plant (MPTP) and total dry mass of the plant (MSTP) of the aerial part lettuce plants. Similarly, the Spirufert® concentrations tested did not alter the content of N, P, K and Na, photosynthesis, internal CO2 concentration and stomatal conductance of the aerial part of lettuce. Significant differences were found between the Spirufert ® concentrations and the evaluation periods, the day of harvest and 24h after the lettuce harvest for most variables. It was found SS higher average dose 4.5% of Spirufert® in the order of 4.16%, but this value reduction after 24 hours, it was observed that the lettuce signs of senescence, evidenced by increased acidity. At a dose of 4.5% Spirufert® also there was a good SS / TA ratio and high content of chlorophyll, even after 24 h, a fact that enabled the maintenance of green color in the leaves, characteristic appreciated by the consumer on the occasion the acquisition.

Livsmedelsindustrin är en bidragande faktor till klimatförändringarna, där innovativalösningar, såsom vertikal odling, kan appliceras för att främja en hållbar livsmedelsproduktion. Vertikala odlingssystem möjliggör urban inomhusodling,vertikalt i hyllplan, i kontrollerade miljöer med odlingskammare, belysningssystem samt vanligtvis jordfri odlingsmetod (t.ex. hydroponik), som är essentiella delar avsystemet. Temperatur, relativ fuktighet och artificiellt ljus regleras efter grödornas behov. Vid hydroponisk odling används odlingssubstrat såsom stenull istället för jord och växternas rötter är i konstant kontakt med det återcirkulerande vattnet i systemet, som förser växterna med näring. Tidigare livscykelanalyser av vertikala odlingssystem, om än ett begränsat antal, belyser elförbrukningen som den största bidragande faktorn till miljöpåverkan, samt att utbyte av olika material kan generera en lägre total miljöpåverkan. Examensarbetet syftar till att utföra en livscykelanalys på Swegreens vertikala odlingssystemet Freja, på ICA Maxi i Solna. Vidare syftar livscykelanalysen till att identifiera de faser och flöden som står för betydande miljöpåverkan, samt några förbättringsförslag. Det vertikala odlingssystemet antar perspektivet ‘vagga till användning’ under 30 år, exkluderande monterings- och sluthanteringsfasen. Användningsfasen innefattar sallatens livscykel från ‘vagga till grav’, exkluderande förtäringsfasen. Den funktionella enheten är 1 kg producerad ekbladssallat tillgänglig för konsumenter av klass 1. Data har inhämtats från både Swegreens digitaliserade data och från en tidigare studie utförd på Swegreens odlingssystem Saga. För bearbetning har programvaran SimaPro och databasen Ecoinvent 3.8 använts. Resultaten analyseras utifrån miljöpåverkanskategorierna ekotoxicitet (sötvatten), fossil resursanvändning, försurning, klimatförändringar, markanvändning, resursanvändning (mineraler och metaller), vattenanvändning och övergödning (sötvatten). Odlingsfasen för sallaten (innehållande elanvändning) är systemets främsta hotspot, följt av råmaterialsfasen för sallat, som orsakar störst miljöpåverkan för samtliga miljöpåverkanskategorier, förutom för resursanvändning (mineraler och metaller). Resultaten kan ej generaliseras eftersom de beror på val av funktionell enhet, systemgränser samt typ av data. Resultaten från känslighetsanalysen för energiproduktion och sluthantering tyder på att olika scenarion genererar lägst miljöpåverkan, beroende på vilka miljöpåverkanskategorier som anses mest relevanta. / The food industry is a contributing factor to climate change, where innovative solutions, such as vertical farming, can be applied to promote sustainable food production. Vertical farming systems enable urban indoor farming, vertically on shelves, in controlled environments with cultivation chambers, lighting systems and usually soil-free cultivation methods (e.g. hydroponics), that are essential parts of the system. Temperature, relative humidity and artificial light are regulated to satisfy the crops needs. Hydroponic cultivation utilizes growing mediums such as rock wool instead of soil and the roots of the plants are in constant contact with the recirculating water in the system, which provides the plants with nutrients. Previous life cycle assessments of vertical farming systems, although limited in numbers,highlight the electricity consumption as the largest contributing factor to the environmental impact, as well as replacing different materials for a lower environmental impact. This study aims to assess the environmental impacts and hot spots, through the use of life cycle assessment, on Swegreen's vertical farming system Freja, at ICA Maxi Solna. Furthermore the life cycle assessment aims to identify the phases and flows that accounts for significant environmental impact, as well as some suggestions for improvement. The vertical farming system applies the perspective of ‘cradle to use’for 30 years, not including the assembly or waste disposal phase. The use phase includes the life cycle of lettuce, from ‘cradle to grave’, not including the consumption phase. The functional unit is 1 kg of produced oak leaf lettuce, class 1,available to consumers. Data has been obtained from both Swegreen's digitized data and from a previous study conducted on Swegreen's farming system Saga. To process the data, the software SimaPro and the Ecoinvent 3.8 database was applied. Results are analyzed with regards to the environmental impact categories ecotoxicity (freshwater), fossil resource use, acidification, climate change, land use,resource use (minerals and metals), water use and eutrophication (freshwater).Results indicate that the lettuce cultivation phase (containing electricity use) is the main hotspot of the system, followed by the raw material phase for the lettuce. Aphase that also dominates in all environmental impact categories, except for resource use (minerals and metals). Results cannot be generalized since they dependon the choice of functional unit, system boundaries and type of data. The sensitivity analysis regarding the energy production and waste disposal suggests that different alternatives cause the lowest environmental impact, depending on which environmental impact categories are considered the most important.

Made available in DSpace on 2016-08-12T19:15:36Z (GMT). No. of bitstreams: 1 ThiagoPS_DISSERT.pdf: 1141491 bytes, checksum: daa95022c775bd52ef89015fbc679f4f (MD5) Previous issue date: 2016-02-16 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The spacing and planting date are factors that can influence the yield of lettuce. Aiming to evaluate the production of American lettuce in relation to spacing and planting season were conducted four experiments in the garden of Departamento de Ciências Vegetais da Universidade Federal Rural do Semi-árido (UFERSA), campus de Mossoró-RN. Each experiment was carried out in the field at a season of planting: 12/23/2014 (summer), 03/25/2015 (autumn), 06/22/2015 (winter) and 09/23/2015 (spring). The characteristics evaluated were height and plant diameter (cm), number of leaves (plant-1), fresh and dry weight of plants (g plant-1), and productivity (t ha-1). The experimental design was a randomized complete block in a factorial 2 x 4 with two lettuce cultivars (Angelina and Amelia) and four planting spacings (15 x 15 cm, 20 x 20 cm, 25 x 25 cm and 30 x 30 cm) and three replicates. Increased planting density resulted in higher productivity, although with lower average mass of plants. The winter and summer crops were best suited for the cultivars, providing the highest productivity / O espaçamento e a época de plantio são fatores que podem influenciar no rendimento da alface. Assim, com o objetivo de avaliar a produção de alface americana em função do espaçamento e épocas de plantio, foram desenvolvidos quatro experimentos na Horta do Departamento de Ciências Vegetais da Universidade Federal Rural do Semi-árido (UFERSA), campus de Mossoró-RN. Cada experimento foi instalado em campo em uma época de plantio: 23/12/2014 (verão), 25/03/2015 (outono), 22/06/2015 (inverno) e 23/09/2015 (primavera). As características avaliadas foram altura (cm) e diâmetro de plantas (cm), número de folhas (planta-1), massa fresca e seca de plantas (g planta-1), e produtividade (t ha-1). O delineamento experimental utilizado foi o de blocos casualizados, no esquema fatorial 2 x 4, com duas cultivares de alface: (Angelina e Amélia) e quatro espaçamentos de plantio ( 15 x 15 cm, 20 x 20 cm, 25 x 25 cm e 30 x 30 cm), com três repetições. O aumento da densidade de plantio resultou em maior produtividade, embora com menor massa média de plantas. Os cultivos de inverno e verão foram os mais adequados para as cultivares, proporcionando as maiores produtividades

Made available in DSpace on 2016-08-12T19:18:53Z (GMT). No. of bitstreams: 1 ThiagoPS_DISSERT.pdf: 1141491 bytes, checksum: daa95022c775bd52ef89015fbc679f4f (MD5) Previous issue date: 2016-02-16 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The spacing and planting date are factors that can influence the yield of lettuce. Aiming to evaluate the production of American lettuce in relation to spacing and planting season were conducted four experiments in the garden of Departamento de Ciências Vegetais da Universidade Federal Rural do Semi-árido (UFERSA), campus de Mossoró-RN. Each experiment was carried out in the field at a season of planting: 12/23/2014 (summer), 03/25/2015 (autumn), 06/22/2015 (winter) and 09/23/2015 (spring). The characteristics evaluated were height and plant diameter (cm), number of leaves (plant-1), fresh and dry weight of plants (g plant-1), and productivity (t ha-1). The experimental design was a randomized complete block in a factorial 2 x 4 with two lettuce cultivars (Angelina and Amelia) and four planting spacings (15 x 15 cm, 20 x 20 cm, 25 x 25 cm and 30 x 30 cm) and three replicates. Increased planting density resulted in higher productivity, although with lower average mass of plants. The winter and summer crops were best suited for the cultivars, providing the highest productivity / O espaçamento e a época de plantio são fatores que podem influenciar no rendimento da alface. Assim, com o objetivo de avaliar a produção de alface americana em função do espaçamento e épocas de plantio, foram desenvolvidos quatro experimentos na Horta do Departamento de Ciências Vegetais da Universidade Federal Rural do Semi-árido (UFERSA), campus de Mossoró-RN. Cada experimento foi instalado em campo em uma época de plantio: 23/12/2014 (verão), 25/03/2015 (outono), 22/06/2015 (inverno) e 23/09/2015 (primavera). As características avaliadas foram altura (cm) e diâmetro de plantas (cm), número de folhas (planta-1), massa fresca e seca de plantas (g planta-1), e produtividade (t ha-1). O delineamento experimental utilizado foi o de blocos casualizados, no esquema fatorial 2 x 4, com duas cultivares de alface: (Angelina e Amélia) e quatro espaçamentos de plantio ( 15 x 15 cm, 20 x 20 cm, 25 x 25 cm e 30 x 30 cm), com três repetições. O aumento da densidade de plantio resultou em maior produtividade, embora com menor massa média de plantas. Os cultivos de inverno e verão foram os mais adequados para as cultivares, proporcionando as maiores produtividades