A hydroponic nutrient solution with low dissolved oxygen content is an open invitation for anaerobic pathogens, such as root rot. more often than not, a hydroponic grower doesn’t get a full blown pathogen attack, but, instead, experiences slowed growth rates or smaller yields because the dissolved oxygen content of the hydroponic system is not maximized.. Adequate dissolved oxygen is necessary for good water quality. as dissolved oxygen levels in water drop below 5.0 mg/l, aquatic life is put under stress. the lower the concentration, the greater the stress. oxygen levels that remain below 1-2 mg/l for a few hours can result in large fish kills.. Hydroponic growers stimulate plant growth by controlling the amount of water, minerals and oxygen in the nutrient solution. these growers work within a narrow realm between irrigating their crop and allowing oxygen into the root zone. ebb and flow hydroponic systems are based upon the natural principle of irrigation and oxygenation of plant roots..
Lettuce (lactuca sativa l., cv. ostinata) growth experiments were carried out to study the effect of dissolved oxygen (do) concentration on plant growth in a floating hydroponic system. pure o 2 and n 2 gas were supplied to the hydroponic system for precise do control. this system made it easy to increase the do concentration beyond the maximum. In many water-based hydroponic systems,the oxygen supplied for plant root uptake is provided mostly as dissolved oxygen (do) in the nutrient solution as well as a zone of aeration provided by a gap from the surface to the reservoir water level. oxygen requirements for plants in flower tend to be more demanding in comparison to vegetative states.. In the end, you will see that plants will perform much better when their oxygen and nutrient availability is optimal. for this reason – aeroponic systems – which supply both requirements in an ideal fashion tend to give the best results for most plant types. in your hydroponic system, ensuring a good supply of oxygen is absolutely vital..
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