Efeito do hidrolisado de peixe na supressividade do solo para o controle do amarelo (Fusarium oxysporum f. sp. zingiberi) do gengibre em experiência agroecológica em Tapiraí-SP / EFFECT OF FISH HIDROLISED ON SUPPRESSIVENESS TO YELLOW OF GINGER (Fusarium oxysporum f. sp. zingiberi) IN AN AGROECOLOGICAL EXPERIENCE IN TAPIRAÍ, SP

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The objective of this work was to evaluate the effect of fish hydrolysed in soil suppression against ginger yellow caused by Fusarium oxysporum f. sp. zingiberi, in a property in Tapirai, SP with no use of fungicides. Fish hydrolysed was applied directly in the soil at 0, 500, 1000, 2000 e 4000 l/ha in two different periods. The development and productivity of plants, microbial soil activity (carbon of microbial biomass, respiration, hydrolise of fluorescein diacetate, and fungi and bacteria populations) and disease incidence was evaluated 10, 70, 140, 190, and 240 days after the first application, except productivity. There were no effects of fish hydrolyzed on plant development, yield, and microbiological activity. On the other hand, it was observed a reduction in the incidence of Fusarium, when the fungus was isolated from rhizomes in petri dish and selective media. The price reduction of ginger in the local market at the last two year and the increase of disease incidence, associated with the cost of control, led the growers to a severe reduction of capitalization and disappointment with the future of the agriculture in the region.

ASSUNTO(S)

peixe como fertilizante atividade microbiana organic matter controle alternativo microbial activity solos supressividade do solo soil suppressiveness matéria orgânica ciências agrárias alternative control ecologia microbiana desenvolvimento rural emulsão de peixe fish emulsion

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