INVESTIGADORES
VARGAS GIL Silvina
artículos
Título:
Glyphosate and Previous Crop Residue Effect on Deleterious and Beneficial Soil-Borne Fungi from a Peanut-Corn-Soybean Rotations
Autor/es:
JOSÉ MERILES; SILVINA VARGAS GIL; RICARDO HARO; GUILLERMO MARCH; CARLOS GUZMÁN
Revista:
JOURNAL OF PHYTOPATHOLOGY-PHYTOPATHOLOGISCHE ZEITSCHRIFT
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Año: 2006 vol. 159 p. 309 - 316
ISSN:
0931-1785
Resumen:
Bean seedlings (Phaseolus vulgaris L.) were transplanted
to soil with corn previous crop residue, peanut previous
crop residue and no agricultural soil, and treated with a
range of glyphosate concentrations. Trichoderma,Phaseolus vulgaris L.) were transplanted
to soil with corn previous crop residue, peanut previous
crop residue and no agricultural soil, and treated with a
range of glyphosate concentrations. Trichoderma,Trichoderma,
Gliocladium, Fusarium and Pythium soil-borne fungi
populations were monitored during 24 days after
glyphosate treatment to study the glyphosate and previous
crop residue effects on these populations. In addition,
those genera of soil-borne fungi were tested to
study in vitro toxicity to glyphosate. Independently of
glyphosate concentration, the highest population of, Fusarium and Pythium soil-borne fungi
populations were monitored during 24 days after
glyphosate treatment to study the glyphosate and previous
crop residue effects on these populations. In addition,
those genera of soil-borne fungi were tested to
study in vitro toxicity to glyphosate. Independently of
glyphosate concentration, the highest population of
Trichoderma spp. and Gliocladium spp. were registered
on soil with previous corn residue. Fusarium andspp. and Gliocladium spp. were registered
on soil with previous corn residue. Fusarium andFusarium and
Pythium populations increased proportionally to the
increment of glyphosate concentration. No effect of glyphosate
was founded on Trichoderma and Gliocladiumpopulations increased proportionally to the
increment of glyphosate concentration. No effect of glyphosate
was founded on Trichoderma and GliocladiumTrichoderma and Gliocladium
populations. The in vitro study results indicated an
inhibitory effect of glyphosate on mycelial grown of the
most studied soil-borne fungi.