Mitigation of salt stress in strawberry by foliar K, Ca and Mg nutrient supply
2009
Yildirim, E.,Atatuerk Univ., Erzurum (Turkey). Ispir Hamza Polat Vocational Training School | Karlidag, H.,Atatuerk Univ., Erzurum (Turkey). Ispir Hamza Polat Vocational Training School | Turan, M.,Atatuerk Univ., Erzurum (Turkey). Dept. of Soil Science
Plant root and shoot dry weight, leaf relative water content (LRWC) and chlorophyll content were reduced by 30%, 21%, 15%, 34%, respectively, at 40 mM NaCl as compared to non-salt stress conditions. However, membrane permeability (MP) of plant increased (85%) with increasing salinity. Foliar nutrient application (FNA) alleviated deleterious effects of salinity stress on growth and this effect was statistically significant. The highest alleviation effect of FNA at 40 mM salinity stress was observed in the case of 10 mM foliar KNO3 and Ca(NO3)2 application, resulting in increase in plant root dry weight (50%), shoot dry weight (50%), LRWC (8.2%) and MP decrease (27.4%) at 40 mM NaCl. Phosphorus, Fe and Zn contents in shoots and roots of plants also increased with FNA treatments, but they were still much lower than those of non-salt stress treatment. Sulphur, P, Fe and Zn contents of shoots reached similar values as in non-salt stress treatment when KNO3 was applied, whereas Fe, Mn, Zn, and Cu contents of roots reached the values of non-salt stress treatment when Ca(NO3)2 was applied.
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