RESUMOO presente trabalho teve por objetivo avaliar a ação dos fungicidas mancozeb (Dithane NT -3 kg/ha), metiram (Polyram DF -3 kg/ha), azoxistrobina (Amistar WG -100 g/ha), metiram + piraclostrobina (CabrioTop -2 kg/ha) e piraclostrobina (Comet -400 mL/ha) no controle da queima das folhas (Alternaria dauci) e sobre alguns parâmetros agronômicos e físico-químicos da cenoura cultivar Nantes. Os produtos foram pulverizados a cada sete dias, a partir dos 40 dias após a semeadura (DAS), totalizando cinco pulverizações durante o ciclo da cultura. A severidade da doença foi avaliada aos 45, 52, 59, 66 e 73 DAS para determinação da área abaixo da curva do progresso de doença e por ocasião da colheita, aos 105 DAS, foram determinados os parâmetros agronômicos (comprimento, diâmetro médio e o peso) e físico-químicos (firmeza, acidez titulável, sólidos solúveis, sacarose e açúcares redutores) das raízes. Foi constada maior eficácia no controle da doença para a aplicação de metiram + piraclostrobina e piraclostrobina e raízes mais pesadas para piraclostrobina. Houve incremento no teor de sólidos solúveis das raízes para os tratamentos azoxistrobina, metiram + piraclostrobina e piraclostrobina. Não foi constado efeito da aplicação dos fungicidas sobre o comprimento, diâmetro médio, firmeza, acidez titulável, teores de sacarose e de açúcares redutores das raízes. Palavras-chave: Daucus carota, Alternaria dauci, fungicida, pós-colheita FUNGICIDE ACTION IN THE CONTROL OF LEAF BLIGHT AND THE CARROT CV. NANTES PHYSICAL-CHEMICAL CHARACTERISTICS ABSTRACTThe objective of present study is to evaluate the action of the fungicides mancozeb (Dithane NT -3 Kg/ha), metiram (Polyram DF -3 Kg/ha), azoxistrobin (Amistar WG -100 g/ha), metiram + pyraclostrobin (CabrioTop -2 Kg/ha) and pyraclostrobin (Comet -400 mL/ha) in the control of leaf blight (Alternaria dauci), as well as their effects on some agronomical and physicalchemical parameters of the carrot cultivar Nantes. The plants were sprayed every seven days, starting 40 days after planting, and totaling five sprayings during their growing cycles. The severity of the disease was evaluated 45, 52, 59, 66, and 73 days after planting in order to determine the agronomical parameters (length, average diameter, and weight) and the physicalchemical characteristics (firmness, titratable acidity, soluble solids, sucrose and reduced sugars) of the roots. Applications of metiram + pyraclostrobin and pyraclostrobin, and this was found to be most effective in controlling the disease and on heavier carrot roots to pyraclostrobin. An increase in the level of soluble solids in the roots was observed with treatments of azoxistrobin, metiram + pyraclostrobin and pyraclostrobin. No effects were observed on the length, mean diameter, firmness, titratable acidity, and levels of sucrose and reduced sugars in the roots as a result of fungicide applications.

ABSTRACT:Temperature can exert great influence on germination, being considered optimal the temperature in which seed expresses its maximum germination potential in the shortest period of time. The germination of parsley seeds is slow, irregular and uneven. The aim of this study was to determine whether there is occurrence of thermodormancy or thermoinhibition of parsley seeds as a function of temperature variations. The experimental design of the first stage was completely randomized (CRD) consisting of 7 temperatures and 4 replicates and the second stage in a 3x3 factorial scheme consisting of 3 parsley cultivars and 3 germination temperatures with 4 replicates. Seeds of the different cultivars did not germinate at temperature of 35°C. Parsley seeds showed thermoinhibition at high temperatures, being necessary to elucidate the mechanisms involved in this process.

DESEMPENHO OPERACIONAL E DADOS AGRONÔMICOS DE TRANSPLANTE MANUAL E MECANIZADO NA CULTURA DA ALFACE1   SAMANTHA VIEIRA DE ALMEIDA2, LUIZ FELIPE GUEDES BALDINI3, MARCO ANTONIO TECCHIO4, PAULO ROBERTO ARBEX SILVA5   1O presente artigo é baseado na dissertação de mestrado do autor. 2Faculdade de Tecnologia de Itapetininga/FATEC, Rua Dr. João Vieira de Camargo, 104, Vila Barth, 18.205-600, Itapetininga/SP, Brasil, samantha.almeida@fatec.sp.gov.br 3Engenheiro Agrônomo, Mestre, Departamento de Produção Vegetal/Horticultura, Faculdade de Ciências Agronômicas/UNESP,  Caixa Postal 02, 18.640-000, Pardinho/SP, Brasil, felipebaldini.fb@gmail.com 4Departamento de Produção Vegetal/Horticultura, Faculdade de Ciências Agronômicas/UNESP, Av. Universitária, 3780, Altos do Paraíso, 18610-034, Botucatu/SP, Brasil, marco.a.tecchio@unesp.br 5Departamento de Engenharia Rural e Socioeconômica, Faculdade de Ciências Agronômicas/UNESP, Av. Universitária, 3780, Altos do Paraíso, 18610-034, Botucatu/SP, Brasil, paulo.arbex@unesp.br   RESUMO: Este trabalho foi realizado para comparar o desempenho operacional no transplante de mudas manual (convencional) ou mecanizado, da cultura da alface, em dois sistemas de plantio, e em duas velocidades de deslocamento. Para realizar o transplante das mudas, foi utilizado o conjunto mecanizado composto por um trator da marca* New Holland, modelo TL60E®, 4x2, com potência nominal de 65 cv e uma transplantadora italiana Fedele Mario, modelo MAX®. O delineamento experimental utilizado foi o fatorial 2x2+1, sendo que os fatores analisados foram dois sistemas de plantio (preparo convencional e plantio direto) e duas velocidades de deslocamento (1ª e 2ª marcha), mais a testemunha, onde os canteiros em preparo convencional foram transplantados manualmente. Foram analisadas as seguintes características da cultura da alface: massa fresca, altura da planta, número de folhas e altura do caule, além do desempenho operacional da máquina e custos operacionais. As médias dos tratamentos foram submetidas a uma análise de variância seguida do Teste Tukey a 5% de probabilidade. A produtividade da cultura da alface não sofreu interferência em relação ao comparativo entre todos os tratamentos estudados. O tratamento com o transplante em sistema de plantio direto na maior velocidade apresentou a maior capacidade operacional do conjunto, sendo viável economicamente.   Palavra-chave: transplantadora, plantio direto, Lactuca sativa, mudas.   OPERATING PERFORMANCE OF MANUAL AND MECHANIZED TRANSPLANTATION AT LETTUCE CROP   ABSTRACT: This work aim was to do comparison between the manual and mechanized transplant of lettuce crop, conventional and no-till, evaluating the operational development of the machine and crop agronomic data in different dislocation speeds. To mechanized transplanting, it was use the mechanized group composed by TL60E® New Holland 4x2 tractor, 65 nominal power and an Italian Fedele Mario MAX® conveyor. The experimental design was the 2x2+1 factorial, where the variables were two plantation system (conventional and direct) and two dislocation speeds (1st and 2nd gear), plus the testimony where the seedbeds were manually transplanted by conventional prepare. The variables were analyzed: fresh weight, plant height, number of leaves and stalk height in addition to the operational performance of the machine and operating costs. All treatments were submitted to an analysis of variance followed by Tukey Test of 5% probability. The treatment with transplant in no-tillage system showed the greatest operational capacity of the set, being economically viable.   Keywords: conveyor, no tillage, Lactuca sativa L, seedlings.

The sowing system, as well as the species used as covercrops, may interfere with the production of straw and the development of further crops. The objective of this research was to evaluate sowing systems for black oat (Avena strigosaSchreb) and white lupine (Lupinus albus) as cover crops, the dry matter production of these plants and their influence on Americana and Curly lettuces yield. Two experiments were performed, one for each lettuce cultivar. The experimental design was composed of 8 treatments (factorial 4x2), evaluated in randomized blocks, with five replications. The first factor is related to four soil coverages (black oat, white lupine, black oat + white lupine and weed) and the second one is the sowing system (handand mechanized in line). The cover plants drying was performed 47 days after planting and the amount of dry matter produced in the area (straw) was then measured. After 30 days from drying, varieties of Curly and Americana lettuce were planted under straw. The lettuce cultivars were evaluated for fresh mass, shoot height and head diameter. For both lettuces, the benefit ofgreen manure was higher using black oat only or combinedwith white lupine, either handor mechanized sowed.

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