Progress in Remote Sensing of Grass Senescence: A Review on the Challenges and Opportunities

Grass senescence estimation in rangeland is particularly important for monitoring the conditions of forage quality and quantity. During senescence, grasses lose their nutrients from leaves to root thereby affecting productivity. Studies on remote sensing grasslands have been conducted during senescent phenological stage. However, despite efforts made previous studies grass its role estimating rudimentary. More so, strengths limitations presented by newly developed instruments are not well documented. This work, therefore, provides a detailed overview progress applications characterizing senescence. The review further highlights challenges opportunities these techniques. Overall, indicates that remotely sensed focused understanding biophysical biochemical properties, identify leaf area index, biomass, chlorophyll content, among others, as key indicators Nonetheless, recent scientific research mismatch between development technologies. use sophisticated robust time-series analysis techniques together with improved characteristics new generation sensors seem present optimal quantification at resolutions complementary spatial extents rangelands. We, recommend this field through adoption satellite technologies advanced data analytics enhance resources.