Made available in DSpace on 2014-06-11T19:29:44Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-01-28Bitstream added on 2014-06-13T18:59:26Z : No. of bitstreams: 1 seleguini_a_me_ilha.pdf: 1295338 bytes, checksum: 303c34c1232191356fce99849d722ed2 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Estudos voltados para identificação de cultivares de tomate que combinem alta produção, tipo de fruto adequado ao consumo “in natura”, com boa qualidade e aparência externa, associada ao hábito de crescimento rasteiro é de grande importância para o aproveitamento de áreas ou períodos adversos à cultura estaqueada ou onde se pretenda apenas baixar o custo de produção. Este trabalho teve como objetivo estudar o comportamento de cinco híbridos de tomate industrial (AP 529, AP 533, Malinta, Heinz 9992 e Rio Brazil), nas condições de ambiente protegido e campo, para produção de frutos para mesa. O experimento foi conduzido de março a agosto de 2004, na Fazenda de Ensino, Pesquisa e Extensão da Faculdade de Engenharia / UNESP, Câmpus de Ilha Solteira, SP. As parcelas foram compostas de uma linha com 20 plantas, no espaçamento de 1,0m entre fileiras e 0,3 m entre plantas. Adotou-se o delineamento em blocos casualizados, com 4 repetições por ambiente, e análise de variância para grupo de experimentos, modelo fixo. O abrigo para o cultivo protegido tinha orientação leste-oeste, com dimensões de 5,4 x 30,0m, e cobertura em arco com filme de polietileno transparente de 75 mm de espessura. Avaliou-se o crescimento de plantas, características agronômicas, qualidade de frutos, além do estudo da viabilidade econômica. Verificou-se que em ambiente protegido foi maior a sobrevivência de plantas, maior o número de frutos médios, pequenos e totais produzidos por área. A produtividade total não foi alterada quando se comparou os ambientes de cultivo, entretanto o cultivo no campo apresentou maior produção de frutos graúdos, além de maior massa média de frutos. Qualitativamente os tomates produzidos em estufa apresentaram um melhor padrão. Em relação aos híbridos, a produtividade variou de 80,6 a 101,8 t/ha, destacando-se os híbridos AP 529 e AP 533, com... . / Studies gone back to identification to cultivate of tomato that combine high production, type of appropriate fruit to the natural consumption, with good quality and external appearance, associate to the habit of low it is of great importance for the use of areas or adverse periods to the propped up culture or where it is just intended to lower the production cost. This work had as objective to study the behavior of five hybrids of industrial tomato (AP 529, AP 533, Malinta, Heinz 9992 and Rio Brazil), in the conditions of protecting environment and field, for production of fruits for table. The experiment was conducted between march and august 2004, at the Teaching, Research and Extension Farm (Ilha Solteira, São Paulo State, Brazil) of the College of Engineering of Ilha Solteira, UNESP. The parcels had been composed of a line with 20 plants, in the spacing of 1.0 m between rows and 0.3 m between plants. The experimental design consisted of randomized blocks, with 4 repetitions for ambient, and analysis of variance, in a fixed model. The shelter for the protecting culture had orientation east-west, with 5.4 x 30.0m of dimensions and covering in arc with transparent polyethylene film of 75mm of thickness. Evaluated the growth of plants, agronomical characteristics and quality of fruits, beyond the study of the economic viability. It was verified that in protecting environment the survival of plants was bigger, greater the number of average, small fruits e total produced by area. The total productivity was not modified when it compared culture environments, however the culture in the field presented greater production of big fruits, beyond bigger average mass of fruits. Qualitatively the tomatoes produced in greenhouse had presented one better standard. In relation to the hybrids, the productivity varied of 80.6 the 101.8 t/ha, being distinguished... (Complete abstract, click electronic address below).

Made available in DSpace on 2015-04-11T13:55:36Z (GMT). No. of bitstreams: 1 Maria do Socorro Monteiro da Silva.pdf: 2303257 bytes, checksum: 2f6b50384f8da9d8bbccbe4568a506b1 (MD5) Previous issue date: 2011-04-06 / Fundação de Amparo à Pesquisa do Estado do Amazonas / The tomato, it belongs to the Solanaceae family, is one of the most consumed vegetables in Amazonas State, and the most marketed fruits come from the southern and southeast states, where weather conditions are more pleasant. Bacterial wilt, caused by the bacterium Ralstonia solanacearum, was established as one of the most important diseases for the tomato crop. Due to soil and climatic requirements, the tomato production is practiced with more intensity in the coldest and the driest regions in Brazil (Southeast, South and Midwest). In the humid tropical regions, the climatic conditions, permanently hot and humid, favors the survival of this bacterium that is the main reason that discourages the production of this crop in this region due to low productivity. With the purpose of indicating the technological innovations that enable the production of this vegetable in large scale, this study aims to evaluate the potential production and trade of two tomato cultivars and management techniques to decrease the incidence of bacterial wilt in protected cultivation systems, in the region of Iranduba - Amazon. The tomato cultivars used were C-38 and Santa Barbara, both developed by Embrapa Eastern Amazon, Belém/PA with a history of tolerance bacterial wilt, they were planted succeeding maize, in two treatments and in other, in successive crops. The data evidences the importance of combining techniques with resistant plant material from crops, because in the management systems that the tomato was planted in succession to maize, mortality was lesser than conventional management system and the productivity (approximately 22,65 t ha-¹) was higher than the average of the Amazonas State (approximately 14,60 t ha-¹). Comparated to the Santa Barbara cultivars, the C-38 cultivar showed higher productivity and characteristics of shape, weight and number of fruit with greater acceptance by the interal market / O tomate, pertencente à família das solanáceas, representa uma das hortaliças mais consumidas no Estado do Amazonas, sendo que a maioria dos frutos comercializados é proveniente dos estados do sul, sudeste e centro-oeste, onde as condições climáticas são mais amenas. A Murcha Bacteriana, causada pela bactéria Ralstonia solanacearum, constitui-se como uma das doenças mais importante para a cultura. Devido às exigências edafoclimáticas do tomateiro, sua produção é praticada com mais intensidade nas regiões mais frias e secas do Brasil. Já nas regiões do trópico úmido, as condições de clima, permanentemente quente e úmido, favorecendo a sobrevivência desta bactéria é o principal motivo que desestimula a produção da cultura nesta região devido a baixa produtividade. Com a finalidade de indicação de inovações tecnológicas que possibilitem a produção desta hortaliça em grande escala, este trabalho objetiva avaliar o potencial produtivo e comercial de duas cultivares de tomate e técnicas de manejo visando diminuir a incidência de murcha bacteriana, em sistema de cultivo protegido, na região de Iranduba AM. Os cultivares utilizados, C-38 e Santa Bárbara, ambos desenvolvidos pela Embrapa Amazônia Oriental, Belém/PA com histórico de tolerância à murcha bacteriana, foram plantados sucedendo o milho, em dois tratamentos e em outro, em cultivos sucessivos. Os dados obtidos evidenciaram a importância da combinação de material vegetal resistente com técnicas de cultivos, pois nos sistemas de manejo em que o tomate foi plantado em sucessão ao milho, apresentou mortalidade inferior ao sistema de manejo convencional, sendo que a produtividade obtida, na média do experimento, de 22,65 t ha-1foisuperior à média do estado do Amazonas(14,60 t ha-1). Comparativamente ao cultivar Santa Bárbara, o cultivar C-38 apresentou maior produtividade e características de formato e número de frutos com maior aceitação pelo mercado interno

Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2016-09-28T13:01:08Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Tese Gerson Kleinick Vignolo Final.pdf: 1485427 bytes, checksum: 22bb207b736300635f678cd9543f64a0 (MD5) / Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2016-09-28T17:23:01Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Tese Gerson Kleinick Vignolo Final.pdf: 1485427 bytes, checksum: 22bb207b736300635f678cd9543f64a0 (MD5) / Made available in DSpace on 2016-09-28T17:23:01Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Tese Gerson Kleinick Vignolo Final.pdf: 1485427 bytes, checksum: 22bb207b736300635f678cd9543f64a0 (MD5) Previous issue date: 2015-05-25 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / O estudo teve como objetivo avaliar a produção e qualidade de frutas de morangueiro durante dois ciclos consecutivos em função da data de poda, filme do túnel baixo e cor do mulching plástico. Foram conduzidos dois experimentos no município de Pelotas-RS, em área experimental pertencente a Embrapa Clima Temperado (CPACT), durante os anos de 2011/2012 e 2012/2013, intitulados: (1) Produção e qualidade de frutas de 'Aromas' e 'Albion' durante dois ciclos consecutivos sob influência da data de poda de plantas de morangueiro; (2) Produção e qualidade de morangos durante dois ciclos consecutivos sob influência do filme do túnel baixo e cor do mulching plástico. Os experimentos foram realizados em sistema de cultivo convencional utilizando túnel baixo e mulching plástico. As mudas, oriundas da Argentina, foram transplantadas no inicio de julho, colhendo-se as frutas até novembro do ano seguinte, totalizando 17 meses de ciclo. Os fatores avaliados no experimento 1 foram as cultivares (Aromas e Albion) e datas de poda (1° e 15 de março e abril, além de plantas sem poda). No experimento 2, avaliaramse o filme do túnel baixo (túnel transparente todo ciclo; túnel leitoso todo ciclo; túnel transparente durante outono/inverno/primavera e leitoso no verão) e cor do mulching plástico (branco, prata e preto). Nos dois experimentos, foram analisados parâmetros de desenvolvimento das plantas e de produção e qualidade de frutas. No presente estudo, pode-se concluir que entre as cultivares testadas, a cultivar Aromas mostrou-se melhor alternativa de cultivo para a região de Pelotas-RS por apresentar maior produção de frutas. No entanto, as frutas de 'Albion' possuem melhor qualidade. As plantas apresentam boa produção no segundo ciclo produtivo, com a vantagem de obtenção de frutas durante meses que existe pouca oferta de morango no mercado. Em plantas sadias, não existe a necessidade de realização de poda para aumento da produção de frutas no segundo ciclo, porém observa-se melhor qualidade de fruta nas plantas podadas. Com relação à cobertura plástica, o filme do túnel baixo não influenciou a produção total de frutas, sendo recomendado o uso de túnel transparente por proporcionar maiores teores de sólidos solúveis e antocianinas que o túnel leitoso. Por outro lado, a produção de frutas foi fortemente influenciada pela cor do mulching plástico, verificando-se que o mulching branco propicia aumento da produção e qualidade de frutas comparativamente ao mulching preto que é utilizado pela maioria dos produtores. / The study aimed to evaluate the production and fruit quality of strawberry during two consecutive seasons according to the date of pruning, film of low tunnel and color of plastic mulching. Two experiments were conducted in Pelotas, Brazil, at Embrapa Clima Temperado (CPACT), in the years 2011/2012 and 2012/2013, entitled: (1) Production and fruit quality of 'Aromas' and 'Albion' during two consecutive seasons under the influence of pruning date of strawberry plants; (2) Production and fruit quality of strawberry during two consecutive seasons under the influence of the film of low tunnel and color of plastic mulching. The experiments were performed in conventional culture system using low tunnel and plastic mulching. The plantlets from Argentina were transplanted in early July, picking the fruits until November of the following year, totaling 17 months. The factors evaluated in the first experiment were the cultivars (Aromas and Albion) and pruning dates (1st and 15th of March and April, besides control treatment without pruning plants). In the second experiment, we evaluated the film of low tunnel (transparent tunnel whole cycle; opaque tunnel whole cycle; transparent tunnel during fall / winter / spring and opaque tunnel in summer) and color of mulching plastic (white, silver and black). In both experiments, plant growth, production and fruit quality were evaluated. It was concluded that between the tested cultivars, 'Aromas' proved to be better alternative for cultivation in the Pelotas region due its higher fruit production. However, fruit of 'Albion' showed better quality. The plants have good production in the second season, with the advantage of obtaining fruit in months that there is shortage of strawberry in the market. In healthy plants, there is no need to perform pruning to increase fruit production in the second season, however there is better fruit quality in the pruned plants. Regarding the plastic cover, the film of low tunnel did not affect the total production of fruits, being recommended the use of transparent tunnel to provide higher soluble solids and anthocyanins than opaque tunnel. However, fruit production was greatly influenced by the color of mulching plastic, being observed that white mulch provides increased production and fruit quality compared to black mulch which is used by most producers.

This thesis covers two separate studies. The first study, chapter 2, was conducted to evaluate whether there are additional economic returns from producing strawberries in the high tunnel compared to the open-field in Southeast Virginia. We develop and compare budgets for eight strawberry cultivars grown in the two environments and sold under three marketing strategies (pre-pick wholesale, pre-pick retail, and U-pick). Almost all cultivars in the high tunnel generated negative net revenues regardless of the marketing strategy. In contrast, net revenues from open-field cultivars were always positive. In the second study, chapter 3, we used a fractional multinomial logit model to estimate the effect of crop revenues, input costs, and fuel ethanol production on the joint acreages planted to eight U.S major crops (barley, corn, cotton, peanuts, rice, sorghum, soybeans, and wheat). We found a positive and statistically significant marginal effect of the expected peanuts' revenue on its acreage share. The expected corn revenue had a negative average marginal effect on soybean acreage share, and the effect of expected wheat revenue was positive on cotton acreage share and negative on rice acreage share. / Master of Science / This thesis covers two separate research studies. The first study, chapter 2}, was conducted to evaluate whether growing strawberries in a simple, low-cost, and passive heat structure known as a "high tunnel" would yield more profit (the difference between total revenues and total costs) compared to growing them outside in an open-field in Southeast Virginia. We estimate and compare differences between total revenues and costs for eight strawberry cultivars grown in the two environments and sold under three marketing strategies. The first two marketing strategies involve growers harvesting strawberries themselves. They can then either retail them (farm stands, farmers' markets, or in a similar setting: pre-pick retail) or sell them in bulk to be retailed by others (pre-pick wholesale). A third marketing strategy involves consumers visiting a farm and picking their own strawberries (U-pick). Almost all cultivars grown in the high tunnel structure resulted in a loss (negative difference between total revenues and costs) regardless of the marketing strategy. In contrast, cultivars produced in the open-field always generated a profit (positive total revenues and costs difference). In the second study, chapter 3, we estimated the effect of crop revenues, input costs, and fuel ethanol production on acreages planted to eight U.S major crops (barley, corn, cotton, peanuts, rice, sorghum, soybeans, and wheat), and we considered the fact that acreages allocated to one crop affect other crops' acreages. We found that increasing the expected revenue of peanuts leads to an increase in its acreage share. Increasing the expected revenue of corn leads to a decrease in soybeans' acreage share. Finally, increasing the expected revenue of wheat leads to an increase in the cotton acreage share and a decrease in the rice acreage share.