Abstract Remote sensing technology has long been used to detect and map crop diseases. Airborne and satellite imagery acquired during growing seasons can be used not only for early detection and within-season management of some crop diseases, but also for the control of recurring diseases in future seasons. With variable rate technology in precision agriculture, site-specific fungicide application can be made to infested areas if the disease is stable, although traditional uniform application is more appropriate for diseases that can spread rapidly across the field. This article provides a brief overview of remote sensing and precision agriculture technologies that have been used for crop disease detection and management. Specifically, the article illustrates how airborne and satellite imagery and variable rate technology have been used for detecting and mapping cotton root rot, a destructive soilborne fungal disease, in cotton fields and how site-specific fungicide application has been implemented using prescription maps derived from the imagery for effective control of the disease. The overview and methodologies presented in this article should provide researchers, extension personnel, growers, crop consultants, and farm equipment and chemical dealers with practical guidelines for remote sensing detection and effective management of some crop diseases.

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遥感和精准农业技术在作物病害检测和管理中的实际应用实例

摘要 遥感技术长期以来被用于作物病害的检测和制图。在生长季节获取的空中和卫星图像不仅可用于某些作物病害的早期检测和季内管理，还可用于控制未来季节的复发病害。借助精准农业中的可变速率技术，如果病害稳定，可以在受感染的地区进行特定地点的杀菌剂施用，尽管传统的均匀施用更适合可在整个田间迅速传播的病害。本文简要概述了已用于作物病害检测和管理的遥感和精准农业技术。具体来说，文章说明了如何使用机载和卫星图像以及可变速率技术来检测和绘制棉田中棉花根腐病（一种破坏性土传真菌病）的地图，以及如何使用从图像中得出的处方图实施特定地点的杀菌剂应用有效控制了病情。本文介绍的概述和方法应为研究人员、推广人员、种植者、作物顾问、农业设备和化学品经销商提供遥感检测和有效管理某些作物病害的实用指南。在棉田中以及如何使用来自图像的处方图实施特定地点的杀菌剂应用，以有效控制疾病。本文介绍的概述和方法应为研究人员、推广人员、种植者、作物顾问、农业设备和化学品经销商提供遥感检测和有效管理某些作物病害的实用指南。在棉田中以及如何使用来自图像的处方图实施特定地点的杀菌剂应用，以有效控制疾病。本文介绍的概述和方法应为研究人员、推广人员、种植者、作物顾问、农业设备和化学品经销商提供遥感检测和有效管理某些作物病害的实用指南。