Vegetable Crops
Mostrando 37-48 de 55 artigos, teses e dissertações.
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37. Efficiency of the predatory mites Phytoseiulus fragariae and Neoseiulus californicus (Acari: Phytoseiidae) in the control of Tetranychus evansi and T. urticae (Acari: Tetranychidae) in Lycopersicon esculentum and Solanum americanum / Eficiência dos ácaros predadores Phytoseiulus fragariae e Neoseiulus californicus (Acari: Phytoseiidae) no controle de Tetranychus evansi e Tetranychus urticae (Acari: Tetranychidae) em Lycopersicon esculentum e Solanum americanum
Tomato (Lycopersicon esculentum Mill.) is the most important industrialized vegetable crop in the world, and the second horticultural activity in terms of cultivated area and economic importance. The tomato crop is known as an agricultural activity of high risk, due to phytosanitary problems during the entire cycle. Among the mite pests of tomato, Tetranychu
Publicado em: 2007
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38. Evaluation of processing tomato inbred lines for efficiency in nutrient uptake and for response to fertilization / Avaliação de linhagens de tomateiro rasteiro quanto à eficiência na absorção de nutrientes e respostas à adubação
The employment of supplementary fertilization is an essential practice in food crop agroecosystems. However, without taking into consideration technical criteria, the fertilization practice might lead to environmental pollution, increased production costs and make the crop systems economically not viable. Thirty processing tomato inbred lines were evaluated
Publicado em: 2007
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39. Avaliação do processo de compostagem de resíduos sólidos urbanos
A crescente produção de resíduos sólidos urbanos e a escassez de áreas para uma destinação final tecnicamente adequada, via implantação de aterros sanitários, faz com que tome importância a técnica de tratamento de resíduos sólidos orgânicos através das compostagem/vermicompostagem. Nesta pesquisa, foi realizada a avaliação destes processos
Publicado em: 2007
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40. Effects of water table management and nitrogen supplies in crops under hypoxia conditions in soil / Influência do manejo do nível freático e doses de nitrogênio em culturas sob hipoxia no solo
In many countries, extensive agricultural areas are affected by short-term waterlogging that cause significant damages to the crop yields. The objectives of this work were: a) to evaluate the stress effect of the soil water excess on lentil plants (Lens culinaris Medik) related to water table management; b) to evaluate the behavior of soybean cultivars (Glyc
Publicado em: 2006
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41. Identificação de fonte de resistência ao pepYMV em acessos de tomateiro cultivado e silvestre do banco de germoplasma de hortaliças da UFV, análise da herança da resistência e alterações estruturais nos tecidos infectados / The identification of resistance sources to PepYMV in accessions of cultivated and wild tomato from the Vegetable Crops Germoplasma Bank of UFV, analysis the heritage and investigation of the structural alterations in infected tissues
A Identificação de fontes de resistência a doenças e o conhecimento do controle genético da resistência é um dos primeiros passos de um programa de melhoramento genético visando à obtenção de cultivares resistentes. O potivírus Pepper yellow mosaic virus (PepYMV), recentemente identificado em plantas de tomateiro no Brasil, tem se disseminado rap
Publicado em: 2006
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42. Resistencia genetica e aspectos epidemiologicos, fisiologicos e anatomicos da infeccao de oidiopsis taurica em capsicum spp / Phenotypic and molecular characterization of Phytophthora capsici from vegetable crops and search and expression of genetic resistance in Cucurbitaceae and Solanaceae
Este trabalho descreve: (a) a diversidade de isolados brasileiros de Phytophthora de hortaliças usando-se marcadores fenotípicos e moleculares, e (b) a distribuição e identificação de resistência em Lycopersicon spp., Cucurbita spp. e Cucumis melo. Determinou-se ainda o efeito do estádio fenológico na expressão da resistência e identificaram-se no
Publicado em: 2006
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43. Estudo dos casos de intoxicação ocasionadas pelo uso de agrotóxicos no estado do Paraná, durante o período de 1993 a 2000 / Cases of intoxication caused by the use of pesticides in the State of Paraná during the period of 1993 to 2000: a study
The state of Paraná is responsible for more than 20% of the national grain production. Its agricultural structure is organized in small and mediumsized properties where the labor force comes mainly from families. In order to mantain and also increase productivity, the agriculture system in Paraná makes intensive use of the available products in the market,
Publicado em: 2005
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44. Supressão da infestação de plantas daninhas pelo sistema de produção de integração lavoura-pecuária / Weed infestations suppression by the cropping system of integration of crop-cattle production
The intercropping system with different vegetable species has become a common agricultural practice in conservationist production systems, that among the advantages of its use, it can be obtained the integrated weed management. However, the wide use of these cropping systems nowadays has required the development of researches related to growth and developmen
Publicado em: 2005
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45. Performance of tomato cultivars (Lycopersicon esculentum Mill.) organically-grown under greenhouse conditions. / Desempenho de cultivares de tomate (Lycopersicon esculentum Mill.) sob sistemas orgânicos em cultivo protegido.
Organic agriculture in Brazil has increased about 30% over the last few years since consumers are seeking for healthier foods, i.e. nutritious and free of pesticide residues. Among vegetable crops organically-grown, tomato constitutes an attractive economic opportunity for growers. However, the lack of information about management practices and cultivars ada
Publicado em: 2005
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46. Resistência genética, fungicidas e solarização para o controle de Thielaviopsis basicola (Berk. &Broome) Ferraris na cultura de alface (Lactuca sativa L.). / Genetic resistance, fungicides and solarization for the control of Thielaviopsis basicola (Berk. &Broome) Ferraris in lettuce crop (Lactuca sativa L.).
Lettuce is the most used leafy vegetable in Brazil. Its crop is being severely affected by Thielaviopsis basicola, fungus which causes root rot and stunting in plants. There are no control studies about this pathogen for the brazillian conditions. This research aimed: to determine the T. basicola occurence in São Paulo State commercial lettuce and other lea
Publicado em: 2005
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47. Fontes de crescimento e sistema produtivo da orizicultura no Mato Grosso. / Sources of growth and the productive system of rice crops in the state of Mato Grosso.
The current study aims to describe the rice production system and to quantify its sources of growth in the state of Mato Grosso, while competing with cotton, corn and soybean crops, between 1980 and 2001. Great technological advances have been observed in upland rice growing, reducing productive differences between the upland and the irrigated rice. In face
Publicado em: 2004
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48. Pratylenchus coffeae em cafeeiros: efeito de densidades populacionais do nematóide e testes com genótipos. / Pratylenchus coffeae in coffee plants: effect of initial population densities and tests with genotypes.
The lesion-nematode Pratylenchus coffeae is a major pest of coffee and other economic crops and its biological variability, which often makes difficult the adoption of control methods, contributes to increase the importance of this parasite in Brazil. Due to the importance of coffee production and the lack of studies involving this nematode species in Brazil
Publicado em: 2004