A method and system for evaluating the water stress status of growing crops in nearly real time employing remote monitoring of entire crop-growing areas, rather than sampling or spot checks, at sufficiently high resolution to recognize features in the crop-growing area, especially to distinguish between...http://www.google.com/patents/US6597991?utm_source=gb-gplus-sharePatent US6597991 - System and method for remote monitoring of water stress status of growing crops