HORTICULTURE

Detailed explanation-1: -Hydroponics is a crop system that makes plants grow in a nutrient-rich water solution; in other words it does not use soil. Furthermore, the water used can be recovered and recycled, and the nutrients can be obtained from a variety of sources, including fish excrement (a technique known as aquaponics).

Detailed explanation-2: -hydroponics, also called aquaculture, nutriculture, soilless culture, or tank farming, the cultivation of plants in nutrient-enriched water, with or without the mechanical support of an inert medium such as sand, gravel, or perlite.

Detailed explanation-3: -Hydroponics is a type of horticulture and a subset of hydroculture which involves growing plants, usually crops or medicinal plants, without soil, by using water-based mineral nutrient solutions.