Greenhouse Plant Growing Systems

Each plant production system must foster the availability of oxygen to the plant roots. This includes every plant production system, ranging from the garden or agricultural field outside to the commercial and hobby hydroponics system in the greenhouse. In successful production systems, this happens. It may be due to a favorable air/water relationship in the media or a media component. It may be due to the way the water or nutrient solution is exposed to the air in the delivery or operation of the system. Oxygen must be dissolved in water for it to be available to the root system. Oxygen dissolves in water in proportion to the surface area existing between the two. For example, thin layers of water in channels and water sprayed through air are more effective in getting oxygen into the water solution than is bubbling air through water, although bubbling air through nutrient solution may supply adequate oxygen levels in small hobby systems.