Ca+2 and Mg+2 of pistachio seedling in response to soil compaction under different water levels
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2015, Vol 6, Issue 1
Abstract
In order to study the effects of four levels of soil compaction and six different moisture levels and to determine non limiting water range a nested experiment with three replications was conducted to evaluate changes in Ca+2 and Mg+2 concentration, uptake content and translocation factor of pistachio seedling (Pistachio vera L.). The air dried soil was passed through soil 4.75 mm sieve, and transferred into 36 PVC cylinders, the soils of cylinders were compacted in order to prepare four levels of soil bulk density (1.35, 1.5, 1.65 and 1.8 g cm-3). After transferring the pistachio seedlings into soil cylinders and their establishment, six different volumetric water contents, from saturation to permanent wilting point, for each compacted soils were applied. Ca+2 and Mg+2 concentration and content in shoot and root and translocation factor of these elements were less under high levels of soil compaction (1.65 and 1.8 g cm-3) than that of low levels of soil compaction (1.35 and 1.5 g cm-3). Concentration and translocation factor of Ca+2 significantly enhanced with increasing water deficit, but the amount of Ca+2 in shoot and root was reduced. Concentration of Mg+2 in root and amount of Mg+2 in shoot and root were declined with increasing water stress. Under all soil compaction levels, translocation factor of both elements were declined under water deficit conditions.
Authors and Affiliations
Ghazaleh Azizi, Adel Reyhanitabar, Davoud Zarehaghi, Nosratollah Najafi
Keywords
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