Review of Agriculture Water Conservation Using Remote Sensing

Abstract

The operational usage of irrigation depending on frequent multi-spectral imaging data is supported by the experiences accumulated over the previous 30 years. The operational application of dense time - series data of multispectral imaging at high spatial resolution currently enables monitoring of agricultural biophysical parameters, recording crop water usage throughout the growing season, with adequate temporal and spatial resolutions. These developments enable precise estimates of agricultural water requirements with previously unheard-of geographical resolution, along with the availability of good forecasting of meteorological data. The gains made in web-GIS methodology can be used to give this information in a simple manner and in close to real-time, which is widely welcomed by the end users, such as professional farmers or decision-makers. This study analyses the most operational and investigated optical remote sensing technologies for the evaluation of agricultural water requirements, highlighting strengths and shortcomings and offering options to get this methodology closer to its full operational implementation. Additionally, we give a basic overview of the technologies that make it easier for stakeholders to collaborate and co-create with us, with a focus on the web-GIS-based techniques