assignment on hydroponics
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Answer:
Hydroponics is a method of growing crops without soil. Plants are grown in rows or on trellises, just like in a traditional garden, but they have their roots in water rather than in dirt. Most of us confuse soil with nutrients. In fact, soil provides structure, not the actual food itself, for plant roots. The food comes from other materials mixed in the soil, such as compost, broken-down plant waste or fertilizers. Plants grown hydroponically can actually grow faster and healthier than plants in soil because they don't have to fight soil borne diseases; in addition, all the food and water they need are given directly to their roots around the clock. • Growing plants hydroponically doesn't have to be done on a large scale, and it's easier than you might think. Now there are kits, do-it-yourself systems and even fully automated growing tables, all designed for home gardeners. • Hydroponics is very simple -- in many ways, it's simpler than growing plants in soil. Plants need food, water and air. When you break it down to those three things, it becomes simple to give plants only what they need. Hydroponics is the science of growing plants without soil. The plants thrive on the nutrient solution alone; the medium merely acts as a support for the plants and their root systems.