Hydroponics is one method that has made vertical farming more attractive. It is a method of growing plants with mineral nutrients without the presence of soil. It not only prevents the risk of soil erosion, but also maintains the natural state of the environment. It is cheaper than the soil gardening processes and protects the plant from bacteria and pathogens. Plants that are grown hydroponically do not require herbicides and pesticides to grow as required in traditional farming. The system provides both constant temperature and light to maximize the crop yield. The pH of water while using the conventional farming is maintained for the crops to get a higher yield but using this technology pH is tested regularly with the addition of acid when necessary. This results in improved plant health and the crop produced is highly nutritious. Hence, hydroponics leads to cost effective production, which involves higher quality products, higher growth of crops, weed control, automatic watering and feeding, extended growth seasons, clean products and reduces crop management labor cost.
Crops
Certain crops like tomatoes, cucumbers, hot peppers and lettuce are grown periodically, but with the hydroponic technique they can be grown yearly. Similarly, the vegetables that are grown only in winter or the short growing season can be produced yearly.
http://www.greendiary.com/entry/vertical-farms-can-architectural-design-save-the-world-from-starvation/
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