Natural Fusarium grain infection level in wheat, barley and oat after early application of fungicides and herbicides
Natural Fusarium grain infection level in wheat, barley and oat after early application of fungicides and herbicides
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DOI：
10.1111/j.1439-0434.2005.00955.x
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发表时间：
2005-04-01
影响因子：
1.5
通讯作者：
Elen, O
中科院分区：
文献类型：
--
作者：
Henriksen, B;Elen, O
在挪威，早期使用杀菌剂防治谷类叶部病害(在Zadoks 60之前)是农民的普遍做法。这一过程是否对成熟籽粒上的镰刀菌侵染有任何影响的研究还很少。为评价对小麦赤霉病的防治效果，于1996年、1997年和1998年在春小麦、春大麦和燕麦上进行了12次田间试验，对小麦、春大麦和燕麦进行了真菌病的早期喷雾。分析了各样品中不同镰刀菌种的侵染率和发病频率。研究了杀菌剂、草甘膦和出苗后除草剂对镰刀菌侵染的影响。与未处理的地块相比，经杀菌剂处理的地块的镰刀菌侵染显著增加。检出的菌种以燕麦镰刀菌和三环镰刀菌最常见。喷施后镰刀菌种的内部排序基本保持不变。秋季用草甘膦处理或生长季用除草剂处理对镰刀菌侵染水平无明显影响。
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.