Impact of the electrical conductivity of the nutritive solution on biomass, photosynthetic pigments and nitrogen compounds in lettuce
The ion concentration in the nutrient solution in a soilless system has a direct impact on the yield and quality of the crops. The objective of this research was to evaluate the effect of the electrical conductivity of the nutrient solution on the biomass, pigments and nitrogenous compounds in the l...
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| Autores principales: | , , , |
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| Formato: | Online |
| Idioma: | spa |
| Publicado em: |
Universidad de Sonora
2022
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| Acesso em linha: | https://biotecnia.unison.mx/index.php/biotecnia/article/view/1687 |
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| Resumo: | The ion concentration in the nutrient solution in a soilless system has a direct impact on the yield and quality of the crops. The objective of this research was to evaluate the effect of the electrical conductivity of the nutrient solution on the biomass, pigments and nitrogenous compounds in the lettuce crop. A randomized complete block experimental design was used with five treatments (1, 1.5, 2, 2.5 and 3 dS m-1) and nine repetitions. The total biomass (fresh and dry) and the accumulation of chlorophylls, carotenoids, proteins, amino acids, reduced glutathione and hydrophilic antioxidant capacity ABTS were determined. The results indicate that the electrical conductivity of the nutrient solution that improved biomass accumulation was 2.5 dS m-1, that of 2 dS m-1 increased proteins and amino acids, while the electrical conductivity of 3 dS m-1 improved the concentration of pigments, glutathione and increased hydrophilic antioxidant capacity ABTS, but performance decreased. Proper management of the electrical conductivity of the nutrient solution is a very important factor in improving the yield and quality of crops in soilless systems. |
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