Crop loss-related forecasting model for Sclerotinia stem rot in winter oilseed rape
Crop loss-related forecasting model for Sclerotinia stem rot in winter oilseed rape
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DOI：
10.1094/phyto-97-9-1186
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发表时间：
2007-09-01
期刊：
影响因子：
3.2
通讯作者：
von Tiedemann, A.
中科院分区：
文献类型：
--
作者：
Koch, S.;Dunker, S.;von Tiedemann, A.
随着冬油菜种植面积的不断扩大，油菜菌核病对德国等欧洲国家冬油菜的危害日益严重。建立了一个预测模型，为花期杀菌剂防治SSR提供决策支持。四个天气变量-空气温度，相对湿度，降雨量和日照时数-被用来计算植物冠层的小气候。根据气候室研究中重新调查的数据，7至11摄氏度和80至86%的相对湿度（RH）被确立为茎感染子囊孢子的最低条件，并表示为区分感染时间（Inh）的指数。发病率（DI）与Inh发生在生长后期（GS）58（蕾期后期）显著相关（r（2）= 0.42，P：
Sclerotinia stem rot (SSR) is an increasing threat to winter oilseed rape (OSR) in Germany and other European countries due to the growing area of OSR cultivation. A forecasting model was developed to provide decision support for the fungicide spray against SSR at flowering. Four weather variables-air temperature, relative humidity, rainfall, and sunshine duration-were used to calculate the microclimate in the plant canopy. From data reinvestigated in a climate chamber study, 7 to 11 degrees C and 80 to 86% relative humidity (RH) were established as minimum conditions for stem infection with ascospores and expressed as an index to discriminate infection hours (Inh). Disease incidence (DI) significantly correlated with Inh occurring post-growth stage (GS) 58 (late bud stage) (r(2) = 0.42, P :