ISHS Acta Horticulturae 458: International Symposium on Water Quality & Quantity-Greenhouse
DRY MATTER YIELD AND NITROGEN CONTENT IN CELERY UNDER SALT STRESS CONDITIONS |
| Author: | C. Leonardi |
| Keywords: | NaCl, total nitrogen, nitrate nitrogen, chlorine, partitioning |
| Abstract:
The experiment was conducted to study the effects of salt stress on celery (Apium graveolens L.var.dulce [Mill.] Pers.). These effects were investigated in greenhouse on plants (cv.Utah 52/70R) fed with normal (control) and salinized nutrient solutions with addition of 0.4 and 0.8% of commercial NaCl; the corresponding elèctrical conductivity (EC) was 5 dS/m for the control, and 10.5 and 16 dS/m respectively for the two salinized solutions. Dry matter, total and nitrate nitrogen on different portions of the plant were evaluated 70 and 110 days after transplant. The results proved celery to be tolerant to salt stress. An increase in solution EC up to 10.5 dS/m did not affect plant dry matter production, whereas the highest EC value decreased plant dry weight. Total nitrogen concentration was higher in salt stressed plants as compared to the control, even if its total content per plant decreased. Relative values of nitrate nitrogen, referred to the plant as a whole, were lower at the highest concentration of salt in nutrient solution. | |
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