Replacing Low-Risk Fungicides with High-Risk Fungicides for Control of Powdery Mildew in a Resistant and Susceptible Summer Squash Cultivar in New Jersey

被引：0

作者：

Wyenandt, Christian A. ^{[1
]}

Noto, A. J. ^{[1
]}

Ward, Daniel L. ^{[1
]}

机构：

[1] Rutgers State Univ, Rutgers Agr Res & Extens Ctr RAREC, Dept Plant Biol, New Jersey Agr Expt Stn, 121 Northville Rd, Bridgeton, NJ 08302 USA

来源：

PLANT HEALTH PROGRESS | 2023年 / 24卷 / 01期

基金：

美国食品与农业研究所;

关键词：

Cucurbitaceae; Podosphaera xanthii; PODOSPHAERA-XANTHII; UNITED-STATES; 1ST DETECTION; CAUSAL AGENT; CUCURBIT; DOWNY;

D O I：

10.1094/PHP-06-22-0058-RS

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

From 2016 to 2018, six fungicide programs for the control of cucurbit powdery mildew (Podosphaera xanthii) on a powdery mildew-resistant summer squash 'Reward F1' and powdery mildew-susceptible 'Senator' were evaluated with an emphasis on reducing the number of chlorothalonil applications. In all 3 years, cucurbit powdery control was greatest (based on lowest area under disease progress curve values) when fungicides with a high risk (HR) for resistance development and with different modes of action were applied in rotation all season or when HR fungicides were applied before and following the onset of disease development, rather than weekly following symptom observation in the susceptible and resistant cultivars. For a disease such as cucurbit powdery mildew, where there are multiple HR fungicides with different modes of action available and where their use could be limited to one or two applications per growing season, these fungicides might be suitable replacements for protectant fungicides in cucurbit crops that have stable genetic resistance to cucurbit powdery mildew.

引用

页码：72 / 78

页数：7

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