Analyses of the shoot and root content of nutrient ions beyond N species demonstrated an overall trend of similar or lower content of both anions and cations in the HiNH 4 + plants compared to the LoNH 4 + plants.
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From urine to food and oxygen: effects of high and low NH<sub>4</sub><sup>+</sup>:NO<sub>3</sub><sup>-</sup> ratio on lettuce cultivated in a gas-tight hydroponic facility.
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