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首页> 外文期刊>Acta Horticulturae >Modernizing the delivery of TOM-CAST.
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Modernizing the delivery of TOM-CAST.

机译：现代化TOM-CAST的交付。

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Fungicides are regularly applied to processing tomato fields at frequencies which at times can be excessive. In an effort to aid growers in a more strategic application approach, disease-warning models were developed to increase the accuracy and reduce the number of seasonal fungicide applications. Disease-warning models are mathematical descriptions of the interaction between environmental variables that can result in plant disease. The output of a model produces an index of predicted disease risk. TOM-CAST is an example of a disease-warning model which establishes a timed fungicide spraying programme for processing tomatoes. This particular model is based upon weather data, specifically hourly leaf wetness and temperature. The output of the TOM-CAST model produces daily disease severity values (DSV). Disease control is obtained from the accumulation of daily DSV's which reach a threshold number and indicate a recommendation for a foliage fungicide application. It has been recently noted that the spatial accuracy of the seasonal spraying applications could potentially be further enhanced if the TOM-CAST model became site specific. Site specific integration within the TOM-CAST model is now feasible with the advancement of geographical information systems (GIS) and an improved agricultural microclimate network called the Ontario Weather Network. From the initial beginnings of the development of TOM-CAST in the early 1970's to the more sophisticated delivery in the year 2004 the tomato industry has gained considerably in the modernization of this decision based model..
机译：杀真菌剂通常以有时过高的频率应用于处理番茄田。为了帮助种植者采用更具战略意义的施用方法，开发了疾病预警模型以提高准确性，并减少季节性杀菌剂的施用次数。疾病预警模型是对可能导致植物病害的环境变量之间相互作用的数学描述。模型的输出产生预测的疾病风险指数。 TOM-CAST是一种疾病预警模型的示例，该模型建立了用于处理西红柿的定时杀菌剂喷洒程序。该特定模型基于天气数据，特别是每小时的叶片湿度和温度。 TOM-CAST模型的输出产生每日疾病严重程度值（DSV）。从每日DSV的累积中获得疾病控制，达到阈值数并表明建议使用叶面杀菌剂。最近已经注意到，如果TOM-CAST模型变得针对特定地点，则可以进一步提高季节性喷洒应用的空间精度。随着地理信息系统（GIS）的发展以及称为安大略省天气网络的改进型农业微气候网络的发展，TOM-CAST模型中特定于站点的集成现已可行。从1970年代初期TOM-CAST开发的最初开始到2004年更复杂的交付，这种基于决策模型的现代化中，番茄行业已获得了可观的发展。

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