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Hydroponics is the cultivation of planting by using water without using soil with emphasis on the fulfillment of nutritional needs for plants. Water requirements in hydroponics are less than water requirements on cultivation with soil. Hydroponics use water more efficiently, so it is suitable to apply to areas with limited water supply.
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Lettuce (Lactuca sativa) is a vegetable plant commonly grown in temperate and tropical regions. The main use is as a salad.
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first hydroponic substrate, hydroponic substrate, hydroponic substrate, hydroponics NFT (Nutrien Film Technique) became known in Indonesia, then developed hydroponic aeroponics that empower the air.
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Hydroponics Substrate. The hydroponic substrate system does not use water as a medium, but uses solid media (not soil) that can absorb or provide nutrients, water, and oxygen and support plant roots as well as soil functions. The materials that can be used as a growing medium on the hydroponic substrate method are charcoal husk, sand, gravel, pumice stone, cocopeat, rockwool, and sponge. The media should be sterile, can store water temporarily, porous, and free of nutrients. The medium serves as a place to store water of nutrients temporarily and the place serves as a root footing. Drip irrigation systems are used to supply nutrient needs from nutrients watered to plants using.