Working Document Series Open Access Monitoring vegetation phenological stages using remote sensing data for pasture management in arid and semi-Arid lands of Kenya M. K. Ambani · C. B. Lukorito · G. O. Ouma The objective of this study was to monitor grassland phenological stages in selected arid and semi-arid lands (ASALs) of Kenya, so as to provide information useful in pasture management. Five years of Normalized Difference Vegetation Index… RUF-34760 2010 CC BY 4.0 10 Sep 2015