Natural Fusarium grain infection level in wheat, barley and oat after early application of fungicides and herbicides

被引:51
作者
Henriksen, B [1 ]
Elen, O [1 ]
机构
[1] Norwegian Crop Res Inst, Plant Protect Ctr, N-1432 As, Norway
关键词
Fusarium head blight; Fusarium seed infection; Fusarium tricinctum; Fusarium avenaceum; glyphosate;
D O I
10.1111/j.1439-0434.2005.00955.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In Norway, early application of fungicides against cereal leaf diseases (before Zadoks 60) is common practice amongst farmers. Whether this procedure has any effect on Fusarium infection of the mature grain has been little investigated. To evaluate effects on Fusarium grain infection, cereal grains were sampled during 1996, 1997 and 1998 from 12 field trials where early spraying against fungal diseases in spring wheat, spring barley and oats was carried out. Percentage infected grains and frequency of different Fusarium species was analysed in every grain sample. The effect of fungicides, glyphosate and postemergence herbicides on Fusarium grain infection was studied. Significant increase in Fusarium infection was detected in fungicide-treated plots compared with untreated plots. Fusarium avenaceum and F. tricinctum were the most frequent species detected. The internal ranking of Fusarium species remained the same after spraying. No significant effects were found on the level of Fusarium infection after glyphosate treatment in autumn or herbicide treatment during the growing season.
引用
收藏
页码:214 / 220
页数:7
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