INVESTIGADORES
VARGAS GIL Silvina
artículos
Título:
The role of potential biocontrol agents in the management of peanut root rot in Argentina.
Autor/es:
SILVINA VARGAS GIL; RICARDO PEDELINI; CLAUDIO ODDINO; MÓNICA ZUZA; ADRIANA MARINELLI; GUILLERMO MARCH
Revista:
JOURNAL OF PLANT PATHOLOGY
Editorial:
EDIZIONI ETS
Referencias:
Lugar: Italia; Año: 2008 vol. 90 p. 35 - 41
ISSN:
1125-4653
Resumen:
Cultural practices such as tillage and crop rotation
can be used as components of pest-management programs.
The appropriate combination of tillage systems
and crops may favor the development of beneficial microorganisms,
preventing the spread of fungal pathogens.
A long-term field study was carried out to analyze
the effect of crop management on the abundance of
actinomycetes, Trichoderma spp., and Gliocladium spp.,
as potential biocontrol agents (PBAs), and their relationship
with the incidence of peanut root rot caused byTrichoderma spp., and Gliocladium spp.,
as potential biocontrol agents (PBAs), and their relationship
with the incidence of peanut root rot caused by
Fusarium solani. Soil samples were taken at sowing and
harvest, and root rot incidence was evaluated at harvest.
There was an inverse relationship between root rot incidence
peanut PBA populations under no-till suggesting
a possible role of PBAs in the control of F. solani, the incidence
of root rot being low under no-till and disc harrow,
associated with a high concentration of potential
antagonists. However, this correlation was not observed
when soybean preceded peanut, when the incidence of
root rot was low despite relatively lower populations of
biocontrol agents present in the soil, in comparison with
maize as previous crop.. Soil samples were taken at sowing and
harvest, and root rot incidence was evaluated at harvest.
There was an inverse relationship between root rot incidence
peanut PBA populations under no-till suggesting
a possible role of PBAs in the control of F. solani, the incidence
of root rot being low under no-till and disc harrow,
associated with a high concentration of potential
antagonists. However, this correlation was not observed
when soybean preceded peanut, when the incidence of
root rot was low despite relatively lower populations of
biocontrol agents present in the soil, in comparison with
maize as previous crop.F. solani, the incidence
of root rot being low under no-till and disc harrow,
associated with a high concentration of potential
antagonists. However, this correlation was not observed
when soybean preceded peanut, when the incidence of
root rot was low despite relatively lower populations of
biocontrol agents present in the soil, in comparison with
maize as previous crop.