HYDROPONICS
Hydroponic systems don't use soil for production; instead, the plants' roots are submerged in a solution that contains macronutrients. These include nitrogen, phosphorus, sulphur and magnesium, as well as trace elements such as iron, chlorine, manganese and molybdenum. Chemically inactive media, such as gravel, sand and sawdust, are used in lieu of soil and help support the root systems.
There are many advantages to hydroponic crop production. It