Nutrition of bean plants in sand culture: Influence of calcium/potassium ratio in the nutrient solution |
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| Authors: | J. M. Peñalosa M. D Cáceres M. J. Sarro |
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| Affiliation: | Dpto. Química Agrícola, Facultad de Ciencias , Universidad Autonoma , Madrid, 28049, Spain |
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| Abstract: | A greenhouse experiment was carried out in order to study the influence of three calcium (Ca)/potassium (K) ratios (0.25, 0.50, and 1.00) in the nutrient solution on nutrient uptake, mineral composition, and productivity of bean plants grown in sand culture. Nitrate consumption and nitrogen (N) plant levels were lower when the Ca/K ratio in the nutrient solution was 0.25. Calcium and K consumption and the corresponding concentrations in the plants were directly related with the Ca/K ratio in the nutrient solution. Magnesium (Mg) consumption decreased as the Ca/K ratio increased. The highest yields were obtained when the Ca/K ratio in the nutrient solution was 1.00. |
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