Title of article :
The Effect of Nitrogen Fertilization on Fusarium Head Blight Development and Deoxynivalenol Contamination in Wheat
Author/Authors :
M. Lemmens، نويسنده , , K. Haim، نويسنده , , H. Lew and P. Ruckenbauer، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Abstract :
The impact of nitrogen (N) fertilization on the development
of Fusarium head blight (FHB) in wheat and
the resulting deoxynivalenol (DON) contamination in
the kernels was studied. In a first experiment, the disease
was assessed on two locations under natural infection
pressure. Five different types of nitrogen fertilizer
(both organic and mineral) were investigated, each
applied at five input rates from 0 to 160 kg N/ha.
With all fertilizers, a significant increase of disease
intensity was observed with increasing N input, while
the type of N fertilizer had poor or no effects on FHB.
Depending on the fertilizer used, the percentage of diseased
spikelets increased from 2.2% at zero N rate up
to 6.6% at 160 kg N input per hectare. In a second
series of trials, three spring wheat varieties including
one Durum wheat line were artificially inoculated with
a Fusarium graminearum and a F. culmorum strain,
known producers of DON. A mineral N fertilizer was
applied at five input levels from 0 to 160 kg N/ha. A
significant increase in FHB intensity and DON contamination
in the grain was observed with increasing
N from 0 to 80 kg/ha. At higher input rates, relevant
in contemporary crop husbandry, disease intensity and
toxin contamination remained at constant levels. It is
concluded that adaptation of N fertilization represents
no relevant tool in managing FHB in practical wheat
cultivation
Keywords :
artificial inoculation , Agronomy , Mycotoxin , natural infection , scab
Journal title :
Journal of Phytopathology
Journal title :
Journal of Phytopathology