Predicting the Onset Date of Cucumber Powdery Mildew Based on Growing Degree Days and Leaf Wetness Duration in Greenhouse Environment.

IF 2.5 3区 农林科学 Q2 PLANT SCIENCES
Min Son, Haejun Jeong, Jin-Yong Jung, Jiwon Park, Jiyoon Park, Hoyoung Park, Jonghan Yoon, Se-Hoon Jung, Chun-Bo Sim, Kwang-Hyung Kim, Sook-Young Park
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Abstract

Cucumber powdery mildew, caused by Podosphaera xanthii, can lead to significant yield losses in greenhouse cultivation. A calendar-based fungicide spray program is commonly employed by farmers, often leading to excessive spraying irrespective of disease conduciveness under certain weather conditions. Therefore, a disease model that can predict the onset of symptoms for determining when to start the first spray applications during a season is needed. This study developed a disease onset forecasting model, which uses growing degree days and leaf wetness duration as input variables, to aid the spray program for cucumber powdery mildew in the greenhouse environment. The model was calibrated using disease onset dates and corresponding weather data collected from two consecutive greenhouse experiments in 2022. As a result, we successfully simulated the symptom onset date with a margin of error of 5.5 days across two validation trials in 2023 and 2024. Further improvements to the model are needed to establish a model-based fungicide program in the greenhouse environment, which can be done by securing more data from additional trials for further modification and calibration of the model.

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温室环境下基于生长度数和叶片湿润期的黄瓜白粉病发病日期预测
黄瓜白粉病(Podosphaera xanthii)是黄瓜温室栽培的主要病害之一。农民通常采用基于日历的杀菌剂喷洒计划,这往往导致在某些天气条件下不顾疾病传染而过度喷洒。因此,需要一种能够预测症状发作的疾病模型,以确定在一个季节中何时开始第一次喷雾应用。本研究建立了以生长度日数和叶片湿润时间为输入变量的黄瓜白粉病发病预测模型,为温室环境下黄瓜白粉病的喷施规划提供依据。该模型使用从2022年连续两次温室实验中收集的疾病发病日期和相应的天气数据进行校准。因此,我们成功地模拟了2023年和2024年两次验证试验的症状发作日期,误差范围为5.5天。为了在温室环境中建立基于模型的杀菌剂计划,需要对模型进行进一步改进,这可以通过从其他试验中获得更多数据来进一步修改和校准模型来完成。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Plant Pathology Journal
Plant Pathology Journal 生物-植物科学
CiteScore
4.90
自引率
4.30%
发文量
71
审稿时长
12 months
期刊介绍: Information not localized
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