Crop rotation and tillage systems as a proactive strategy in the control of peanut fungal soilborne diseases

VARGAS GIL, S.; MERILES, J. M.; HARO, R.; CASINI, C.; MARCH, G. J.

BIOCONTROL (DORDRECHT)

Año: 2008 vol. 53 p. 685 - 698

1386-6141

Soil management practices can affect the population dynamics of soil microbial communities. Cultural practices can be adequately combined to benefit natural populations of microorganisms that may have a role in biological control (actinomycetes, Trichoderma spp., and Gliocladium spp.), thus contributing to the management of peanut fungal soilborne diseases in a sustainable manner within ecological boundaries. During six agricultural cycles, rhizosphere soil samples were taken from a field subjected to crop rotation (soybean, peanut, and maize), peanut being under two tillage systems (no till, reduced tillage) with the aim of quantifying populations of soil microorganisms. The incidence of diseases caused by soilborne fungi in peanut was determined at harvest. The highest amount of actinomycetes, Trichoderma spp., and Gliocladium spp. were recorded when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma fungal soilborne diseases in a sustainable manner within ecological boundaries. During six agricultural cycles, rhizosphere soil samples were taken from a field subjected to crop rotation (soybean, peanut, and maize), peanut being under two tillage systems (no till, reduced tillage) with the aim of quantifying populations of soil microorganisms. The incidence of diseases caused by soilborne fungi in peanut was determined at harvest. The highest amount of actinomycetes, Trichoderma spp., and Gliocladium spp. were recorded when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma fungal soilborne diseases in a sustainable manner within ecological boundaries. During six agricultural cycles, rhizosphere soil samples were taken from a field subjected to crop rotation (soybean, peanut, and maize), peanut being under two tillage systems (no till, reduced tillage) with the aim of quantifying populations of soil microorganisms. The incidence of diseases caused by soilborne fungi in peanut was determined at harvest. The highest amount of actinomycetes, Trichoderma spp., and Gliocladium spp. were recorded when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma fungal soilborne diseases in a sustainable manner within ecological boundaries. During six agricultural cycles, rhizosphere soil samples were taken from a field subjected to crop rotation (soybean, peanut, and maize), peanut being under two tillage systems (no till, reduced tillage) with the aim of quantifying populations of soil microorganisms. The incidence of diseases caused by soilborne fungi in peanut was determined at harvest. The highest amount of actinomycetes, Trichoderma spp., and Gliocladium spp. were recorded when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma spp., and Gliocladium spp.), thus contributing to the management of peanut fungal soilborne diseases in a sustainable manner within ecological boundaries. During six agricultural cycles, rhizosphere soil samples were taken from a field subjected to crop rotation (soybean, peanut, and maize), peanut being under two tillage systems (no till, reduced tillage) with the aim of quantifying populations of soil microorganisms. The incidence of diseases caused by soilborne fungi in peanut was determined at harvest. The highest amount of actinomycetes, Trichoderma spp., and Gliocladium spp. were recorded when maize was the preceding crop. Regarding tillage systems, the populations of the three groups of microorganisms were higher in peanut under no tillage than under reduced tillage. Under these conditions, the lowest incidence of peanut blight (Sclerotinia minor) and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma and root rot (strains of Fusarium solani) was observed, suggesting a possible natural control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut soilborne pathogens. The quantification of actinomycetes, Trichoderma control of peanut so