In hydroponics, the plant roots are directly exposed to a nutrient-rich water solution or an inert medium (like perlite, vermiculite, rockwool, or coconut coir) that supports the plant and holds moisture, eliminating the need for soil.
What is Hydroponics ?
Asked in UPPSC Upper Mains 2009 · Topic: Plant Nutrition (Hydroponics: Principles and applications in nutrient studies)
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