THE FUNGICIDES TERRAZOLE AND TERRACLOR AND THE NEMATICIDE FENAMIPHOS HAVE LITTLE EFFECT ON ROOT COLONIZATION BY GLOMUS-MOSSEAE AND GROWTH OF COTTON SEEDLINGS
Gs. Pattinson et al., THE FUNGICIDES TERRAZOLE AND TERRACLOR AND THE NEMATICIDE FENAMIPHOS HAVE LITTLE EFFECT ON ROOT COLONIZATION BY GLOMUS-MOSSEAE AND GROWTH OF COTTON SEEDLINGS, Mycorrhiza, 7(3), 1997, pp. 155-159
The effect of three pesticides on the initiation and early development
of arbuscular mycorrhiza in cotton was examined in experiments under
controlled conditions. The fungicides Terrazole and Terraclor initiall
y inhibited mycorrhizal infection of roots of cotton. The inhibition d
isappeared after 4 weeks, and neither fungicide had a lasting effect.
The nematicide Fenamiphos slightly increased shoot dry weight at 6-10
weeks from planting and had no effect on mycorrhizal infection. We con
clude that these pesticides have no sustained, detrimental effect on m
ycorrhizal infection or growth of cotton seedlings when applied at rec
ommended rates.