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Vinazas y hongos del suelo

Authors: Vicente, N.; Santos, Milagrosa; Vicente, Nelly; Diánez, Fernando; De Cara, Miguel; Tello, Julio C.;

Vinazas y hongos del suelo

Abstract

El propósito de este trabajo fue estudiar el efecto biocida de tres subproductos agroindustriales, concretamente de la vinaza de remolacha, la vinaza de caña de azúcar y la vinaza de vino. Se realizaron dos estudios, el primero se centró en estudiar in vitro la acción de los tres subproductos agroindustriales analizando su comportamiento en diluciones a las dosis iniciales del 1%, 3% y 5% frente a seis hongos fi topatógenos: Fusarium oxysporum f.sp. melonis raza 0 y 1, F. oxysporum f.sp. radicis-cucumerinum, Sclerotinia sclerotiorum, Pythium aphanidermatum y Phytophthora parasitica. Posteriormente, se estudió la capacidad antagonista de las disoluciones ensayadas in vitro, sobre suelos, estudiando la incidencia de los subproductos mencionados sobre las poblaciones fusáricas presentes en dichos suelos. Los resultados obtenidos para los ensayos realizados in vitro determinan que la vinaza de vino es la que presenta una capacidad de supresión del crecimiento fúngico del 100% a concentraciones no muy elevadas, entre el 5% y 7% para Fusarium oxysporum f.sp. melonis raza 0 y 1, S. sclerotiorum, P. aphanidermatum y P. parasitica y al 10-15% para Fusarium oxysporum f.sp. radicis-cucumerinum. Por el contrario, la vinaza de caña de azúcar produce un incremento a altas concentraciones y la vinaza de remolacha presenta efecto supresor del crecimiento fúngico aproximadamente del 100% sólo para algunos de los fi topatógenos ensayados: S. sclerotiorum (15%), P. aphanidermatum (7%), P. parasitica (15%) y Fusarium oxysporum f.sp. radicis-cucumerinum (15%). En las muestras de suelo analizadas ninguno de los tres extractos de vinaza consigue disminuir la microbiota fusárica, produciendo un incremento en las tres muestras ensayadas, lo que podría llevar implícito una mejora en la calidad de los suelos al producirse un posible incremento en la microbiota bacteriana y fúngica de los mismos.

Abstract: The purpose of this research was to study the biocidal effect of three agroindustrial subproducts, concretely sugar beet, sugar cane and wine vinasse. Two tests were carried out. The fi rst centred on studying the action of the three agroindustrial subproducts in vitro. In dilutions at initial doses of 1%, 3% and 5%, their performance against six phytopathogenic fungi was analyzed: Fusarium oxysporum f.sp. melonis race 0 and 1, F. oxysporum f.sp. radicis-cucumerinum, Sclerotinia sclerotiorum, Pythium aphanidermatum and Phytophthora parasitica. Next, the antagonistic capacity of the solutions assayed in vitro was tested in soil, studying the incidence of the subproducts on the Fusarium populations in these soils. Results from in vitro testing determined that wine vinasse is what shows a 100% capacity to suppress fungal growth with concentrations that are not very high, between 5% and 7% for Fusarium oxysporum f.sp. melonis race 0 and 1, S. sclerotiorum, P. aphanidermatum and P. parasitica and 10-15% for Fusarium oxysporum f.sp. radicis-cucumerinum. On the other hand, sugar cane vinasse produced an increase at high concentrations and sugar beet vinasse showed an approximate 100% suppressor effect on fungal growth for only some of the phytopathogens tested: S. sclerotiorum (15%), P. aphanidermatum (7%), P. parasitica (15%) and Fusarium oxysporum f.sp. radiciscucumerinum (15%). In the soil samples analyzed none of the three vinasse extracts decreased fusaric microbiota, producing an increase in the three samples tested. This would implicitly convey an improvement in soil quality by producing a potential increase in bacterial and fungal microbiota. Therefore the continuity of this research is necessary, carrying out fi eld experiments so potential lower concentrations can be determined that generate disease suppression in more complex systems.

Country
Spain
Related Organizations
Keywords

Subproductos agroindustriales, Fusarium, Agroindustrial subproducts, :6 - Ciencias aplicadas::63 - Agricultura. Silvicultura. Zootecnia. Caza. Pesca::632 - Enfermedades y protección de las plantas [CDU], CDU::6 - Ciencias aplicadas::63 - Agricultura. Silvicultura. Zootecnia. Caza. Pesca::632 - Enfermedades y protección de las plantas

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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Green