Effect of Previous Crops and Soil Physicochemical Properties on the Population of Verticillium dahliae in the Iberian Peninsula

The soil infestation of Verticillium dahliae has significant Verticillium wilt of olive (VWO) with epidemiological consequences which could limit the expansion of the crop. In this context, there is a misunderstood history of the crops and soil property interactions associated with inoculum density...

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Bibliographic Details
Published in:Journal of fungi (Basel) 2022-09, Vol.8 (10), p.988
Main Authors: Santos-Rufo, Antonio, Pérez-Rodriguez, Mario, Heis Serrano, Juan, Roca Castillo, Luis Fernando, López-Escudero, Francisco Javier
Format: Article
Language:English
Subjects:
cation exchange capacity
Crop diseases
Crops
Epidemiology
Guadalquivir Valley
history crops
Inoculum
Irrigation
neural network
Olea europaea
Pathogens
Physicochemical properties
Plant diseases
Soil properties
soil texture
Verticillium dahliae
Verticillium wilt
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Summary:The soil infestation of Verticillium dahliae has significant Verticillium wilt of olive (VWO) with epidemiological consequences which could limit the expansion of the crop. In this context, there is a misunderstood history of the crops and soil property interactions associated with inoculum density (ID) increases in the soil. In this study, the effect of the combination of both factors was assessed on the ID of V. dahliae in the olive-growing areas of the Iberian Peninsula. Afterwards, the relationship of the ID to the mentioned factors was explored. The detection percentage and ID were higher in Spain than Portugal, even though the fields with a very favourable VWO history had a higher ID than that of the fields with a barely favourable history, regardless of the origin. The soil physicochemical parameters were able to detect the degree to which the ID was increased by the previous cropping history. By using a decision tree classifier, the percentage of clay was the best indicator for the V. dahliae ID regardless of the history of the crops. However, active limestone and the cation exchange capacity were only suitable ID indicators when
ISSN:2309-608X
2309-608X
DOI:10.3390/jof8100988