The country having highest area under hydroponics is

The country which has the highest area under hydroponics is Israel.
Hydroponic is a type of horticulture and a subset of hydroculture that involves growing plants without soil, by using water-based mineral nutrient solutions in aqueous solvents.
Israel, known for its agriculture technologies, is strong in the hydroponics field. Green in the City is one of many urban green spots blooming around Israel. The Society of the Protection of Nature in Israel has an ongoing grassroots project that helps residents build and maintain community gardens.