efeito do pré-plantio com plantas medicinais e aromáticas no controle de plasmodiophora brassicae the effect of pre-plantation with medicinal plants in the plasmodiophora brassicae control

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ID: 145147
2007
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Abstract
A "hérnia das crucíferas" é a principal doença na produção de brássicas na Região Metropolitana de Curitiba-PR. Fatores ambientais favoráveis, ausência de cultivares resistentes e de controle químico eficiente, aliados ao plantio sucessivo de espécies da mesma família, têm colaborado para sua disseminação. Com o objetivo de controlar a doença com menor impacto ambiental, o presente estudo verificou o efeito do pré-plantio de plantas medicinais e aromáticas na redução de inóculo de Plasmodiophora brassicae. Dois experimentos foram conduzidos em casa de vegetação no Setor de Ciências Agrárias da Universidade Federal do Paraná, nos períodos de junho a novembro de 2003 e julho a dezembro de 2004. O delineamento foi inteiramente casualizado com nove tratamentos e seis repetições. As plantas utilizadas nos tratamentos foram: menta (Mentha piperita L.); alfavaca (Ocimum basilicum L.); bardana (Arctium minus Hill); calêndula (Calendula officinalis L.); cebolinha (Allium fistulosum L.); salsa (Petroselinum hortense Hoffm) e sálvia (Salvia officinalis L.), e como testemunhas foram utilizados solos sem patógeno e solo infestado, ambos em pousio. Utilizaram-se vasos contendo 3 Kg de solo esterilizado via vapor e como inóculo de P. brassicae foram utilizados 2,5 g de galhas por vaso. A rúcula (Eruca sativa Mill) foi o hospedeiro suscetível utilizado. Após 45 dias do plantio da rúcula foram determinadas a massa aérea fresca, incidência de galhas galhas e o índice de severidade. A maior massa aérea fresca e as menores severidades foram obtidas no experimento de 2003, nos tratamentos com o pré-plantio das medicinais bardana, salsa, menta, alfavaca e cebolinha.
Clubroot of crucifers is main disease in the brassica production in the Metropolitan Region of Curitiba, Paraná State. Favorable environmental factors, lack of resistant varieties and efficient chemical control along with successive plantation of the same family species have collaborated to inoculum dissemination. Aiming to control this disease with the lowest environmental impact, the present study verified the effect of pre-plantation medicinal and aromatic plants in the reduction of Plasmodiophora brassicae inoculum. Two experiments were carried out under greenhouse conditions at 'Ciências Agrárias' sector at ´Universidade Federal do Paraná', from June to November 2003 as well as from July to December 2004. The experiment was installed in a completely randomized design with nine treatments and six replications. Medicinal and aromatic plants used in the treatments were mint (Mentha piperita L.); basil (Ocimum basilicum L.); bardana (Arctium minus Hill); calêndula (Calendula officianalis L.); chive (Allium fistulosum L.); parsley (Petroselinum hortense Hoffm) and salvia (Salvia officinalis L.). As control samples, inoculation and infested soil, both inactive, were used. Pots with 3 kg of steam-sterilized soil were used, and as an inoculum of P. brassicae 2,5 g of galls were used per pot. Rudbeckia (Eruca sativa Mill) was the susceptible host. Forty days after rudbeckia plantation, fresh foliar mass, the incidence and disease severity index were determined. The greater fresh foliar mass and lower severity index were obtained in the 2003 experiment with the treatment pre-plantation of "bardana", parsley, mint, basil and chive.
Reference Key
hasse2007summaefeito Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Ionete Hasse;Louise Larissa May-De Mio;Vismar da Costa Lima Neto
Journal research on chemical intermediates
Year 2007
DOI
10.1590/S0100-54052007000100011
URL
Keywords Keywords not found

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