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Effect of root aeration on inorganic nutrient uptake and growth in hydroponically grown lettuce (Lactuca sativa L.)



Effect of root aeration on inorganic nutrient uptake and growth in hydroponically grown lettuce (Lactuca sativa L.)



RDA Journal of Agricultural Science, Horticulture 36(1): 393-398



The optimum range of dissolved O2 in nutrient solution for lettuce growth was 6-7 p.p.m. and the maximum DW was obtained in this range. Higher concentrations led to a decrease in DW. The growth response of roots to aeration was more sensitive than that of the leaf. Increased aeration resulted in more DM accumulated in the roots than in the leaves, thus reducing the shoot:root ratio. Relative growth rate was highest at an aeration rate of 0.6 litres/h.

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Accession: 002604144

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