Plants of Phaseolus vulgaris were grown from seed in open-top growth chambers at the present (P, 350 μmol mol -1 ) atmospheric CO 2 concentration and at an elevated (E, 700 μmol mol -1 ) CO 2 concentration, and at low (L, without additional nutrient solution) and high (H, with additional nutrient solution) nutrient supply for 28 d. The effects of CO 2 and nutrient availability were examined on growth, morphological and biochemical characteristics
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Radoglou et al. (1992) studied this question.