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Hydroponics is a science of growing plants using a solution of suitable nutrients instead of soil, the plants grow in nutrient medium and growing media plays an important role in seed germination, seedling growth and vigour in hydroponics. Several studies reported the favorable effect that organic materials have on plant growth. In this system, many leafy green can easily be grown and commercially most widely used for lettuce production. Besides lettuce, recently various hydroponic experiments were conducted using spinach as model crop. Plants are placed in channel or tube with roots dangling...