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首页> 外文期刊>Emirates Journal of Food and Agriculture >Foliar fungicide application as management strategie to minimize the growing threat of yellow rust on wheat in Portugal
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Foliar fungicide application as management strategie to minimize the growing threat of yellow rust on wheat in Portugal

机译：使用叶面杀菌剂作为管理策略，以最大程度地减少葡萄牙的小麦黄锈病日益严重的威胁

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摘要

Yellow rust caused by Puccinia striiformis f. sp. tritici, is a foliar wheat disease that cause significant yield losses in Portuguese bread and durum wheat yield, mainly in recent years. The strategies to disease control include cultural practices (crop rotation, use of balanced fertilizers, framework of planting dates), use of resistant varieties and fungicide application. The concern of modern plant breeding has been the improvement of new varieties with escape behavior to diseases and/or genetic resistance, but currently, the use of chemical produts offers a pratical and rapid response solution to combat rust outbreaks. In the present study, field experiments were conducted from 2013/2014 to 2016/2017 growing seasons to evaluate: 1) resistance levels against yellow rust in some bread and durum wheat varieties widely used by Portuguese farmers; 2) the opportunity of application of fungicide in the control of Puccinia striiformis in two stages of plant development; 3) gains obtained in each situation in yield and thousand kernel weight (TKW) compared to the control without fungicide application. This study allows to conclude that the need to use fungicide sprays it?′s related not only on the carry over of rust inoculum in crop, but also of the races/strains of P. striiformis occurring in a region, the crop growth stage at time of symptom appearance and on variety level of resistance.
机译：小麦条锈菌引起的黄锈病f。 sp。 Tritici是一种叶面小麦病，主要在最近几年引起葡萄牙面包和硬质小麦单产的大幅下降。疾病控制战略包括文化习俗（轮作，平衡肥料的使用，播种日期的框架），抗性品种的使用和杀真菌剂的使用。现代植物育种的关注在于对具有逃避疾病和/或遗传抗性的行为的新品种的改良，但是目前，化学产品的使用提供了一种实用且快速的解决方案来对抗锈病的爆发。在本研究中，从2013/2014年至2016/2017生长季节进行了田间试验，以评估：1）葡萄牙农民广泛使用的一些面包和硬质小麦品种对黄锈病的抗性水平; 2）在植物发育的两个阶段中使用杀真菌剂控制条锈菌的机会; 3）与不施用杀真菌剂的对照相比，在每种情况下在产量和千粒重（TKW）上获得的收益。这项研究可以得出结论，是否需要使用杀真菌剂喷洒农药，不仅与农作物中锈菌接种物的结转有关，而且还与发生在该地区的小麦条锈菌的种/株有关，农作物的生长阶段为症状出现的时间和抵抗力的变化水平。

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