The Sultan responsible for improving fruit quality was Firoz Shah Tughlaq (reigned 1351–1388). He achieved this through an extensive program of public works and administrative reforms. Specifically, he established more than 1,200 gardens in and around Delhi. These royal gardens were dedicated to the careful cultivation and research of various fruit species, dramatically enhancing their yield and quality. This focus on horticulture highlights his unique contribution to agricultural improvement, with grapes being a particularly prized fruit during his era.