2 research outputs found

    Uso de Bacillus subtilis no controle da meloidoginose e na promoĆ§Ć£o do crescimento do tomateiro Use of Bacillus subtilis in the control of root-knot nematode and the growth promotion in tomato

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    O objetivo deste trabalho foi o de avaliar o efeito de Bacillus subtilis (PRBS-1) como promotor de crescimento e agente de supressĆ£o de nematĆ³ides formadores de galhas (Meloidogyne spp.) no cultivo do tomateiro. Os tratamentos consistiram na aplicaĆ§Ć£o de formulaĆ§Ć£o contendo B. subtilis e o nematicida carbofuran. As plantas foram mantidas em casa de vegetaĆ§Ć£o durante 85 dias, quando foram coletadas, sendo separada as raĆ­zes da parte aĆ©rea para avaliaĆ§Ć£o do efeito dos tratamentos. A produĆ§Ć£o de massa fresca da parte aĆ©rea do tomate foi incrementada pelos tratamentos quĆ­mico e biolĆ³gico. A massa fresca de raĆ­zes foi reduzida com a aplicaĆ§Ć£o de B. subtilis. O efeito do tratamento biolĆ³gico sobre a reproduĆ§Ć£o do nematĆ³ide foi mais evidente pela reduĆ§Ć£o de massas de ovos na raiz. O presente estudo indica que a estirpe PRBS-1 de B. subtilis promove o crescimento do tomateiro e reduz a reproduĆ§Ć£o de nematĆ³ide formador de galhas em raĆ­zes dessa planta, sob condiƧƵes de casa de vegetaĆ§Ć£o.The objective of this research was to evaluate the Bacillus subtilis (PRBS-1) effect as growth promoter and suppressor agent of root-knot nematode (Meloidogyne spp.) in tomato cultivation. The treatments consisted in the application of B. subtilis formulation and of the nematicide carbofuran. The plants were maintained in greenhouse during 85 days, when the plants were colleted. Roots were separated from aerial part of the plants to evaluate the treatments effect. The fresh matter production by the aerial part increased either by the chemical or by the biological treatments. The fresh matter of the roots was reduced with application B. subtilis. The effect of the biological treatment on the nematode reproduction was more evident by the reduction of egg masses in the root. The present study indicates that the strain PRBS-1 of B. subtilis promotes tomato plant growth and reduces knoot-root nematode reproduction in tomato roots under greenhouse conditions
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