any of various fungi of the family Peronosporaceae parasitic on e.g. grapes and potatoes and melons

antracol 70wp can effectively control downy mildew on cucumber and chinese cabbage, and early blight on tomato.

安泰生70 %wp可有效地防治黄瓜霜霉病、大白菜霜霉病和番茄早疫病。

disease index of downy mildew index and bacterial angular leaf spot was 0.8 and 1.3, respectively.

瓜商品性好，黄瓜霜霉病病情指数为0.8，细菌性角斑病，病情指数为1.3。

downy mildew is a major foliage disease of cucurbit crops in the world.

霜霉病是世界上危害瓜类作物的主要叶部病害之一。

the cucumber downy mildew is a common disease of cucumber and cause serious loss.

黄瓜霜霉病是黄瓜生产上的一种常见病害，对黄瓜的产量危害较大。

this study suggested that bfs01 wp had a valuable perspective for controlling the grape downy mildew in fields.

本研究表明b-fs01可湿性粉剂对葡萄霜霉病具有良好的田间应用前景。

effects of systemic fungicide metalaxyl on the development of downy mildew in infected sunflower leaves were examined with electron microscopy.

利用电镜技术研究了内吸杀菌剂甲霜灵对向日葵霜霉菌在寄主向日葵上发育的影响。

methods of control downy mildew included utilizing medicine and closing a greenhouse at high temperature, but were ultimately to produce resistant varieties.

防治霜霉病可采取喷施杀菌剂和高温闷棚等措施，但根本途径是培育抗霜霉病的黄瓜优良品种。

now , the markers of powdery mildew and downy mildew in cucumber have been found, but there was no report on molecular markers of cucumber wilt up to date.

目前利用分子标记已找到了与黄瓜白粉病和霜霉病抗性相关基因连锁的分子标记，但与黄瓜枯萎病抗性相关基因连锁的分子标记研究国内目前尚未见报道。

the antibiotic 2507 has also satisfactory effect for controlling chinese cabbage downy mildew disease infected by peronospora parasitica fr. with efficacy 87.5%in field test.

结果表明，抗生素2507在温室人工接菌情况下，防治黄瓜疫病的效果可达95%以上，田间小区防治小白菜霜霉病的效果达到87.5%。

downy mildew is one of the most serious grape diseases, the usual treatment method presently is the application of chemical fungicide, but excessive spray brings many severe problems.

霜霉病是危害葡萄最严重的病害之一，目前采用的主要防治手段是喷施化学农药，但其用量过多也带来许多严重问题。

this paper reported typical symptoms of cucumber downy mildew in early and mid-late stage, described 5 of its non-typical symptoms and analyzed the causing reasons.

报道了黄瓜霜霉病的前期和中后期典型癥状特点，描述了多角形亮斑、多角形枯斑、疱斑形病斑、凹陷形病斑、缘枯形病斑等5种非典型癥状，并分析了形成的原因。

methods using the time series analysis of cucumber downy mildew disease, to explore the forecasting method from the angle of methodology.

方法：采用黄瓜霜霉病病情指数时间序列从方法学的角度进行预测方法研究。

the main methods to prevent downy mildew and fusarium wilt are using chemical pesticide which brings about potential danger to health of people and environment.

目前防治甜瓜霜霉病和枯萎病的主要途径仍然是运用化学方法，这对人类的健康和生活环境存在着巨大的潜在威胁。

first, icrisat mapped the genomic regions of pearl millet that control downy mildew resistance, grain production and straw yield under drought conditions.

首先，国际半干旱热带作物研究所绘制了珍珠谷子的基因区，这些谷子可控制干旱条件下的霜霉病抗性、谷物产量和产草量。