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KMID : 0903619940350030201
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Journal of the Korean Society for Horticultural Science
1994 Volume.35 No. 3 p.201 ~ p.207
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Effect of Long Term CO2 Enrichment on Mineral Nutrient Uptake in Tomato Plants
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Abstract
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This experiment has examined the change of nutrients in the tomato plants (Lycopersicon esculentum Mill cv. Kwangsu) with long-term CO₂ enrichment by 800 ppm. The contents of nitrogen and phosphorus significantly decreased in the lower leaves of the CO₂-enriched tomato plants, while nitrogen, phosphorus, and potassium decreased in the upper leaves after 80 days of treatments. Uptake of nitrogen, phosphorus and potassium increased in the CO₂-enriched tomato plants, but absolute concentrations in the whole plant remained the same in the CO₂-enriched plants and the control. The concentration of phosphorus and potassium in the tomato roots dropped when the CO₂ level was elevated to 800 ppm.
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