TY - JOUR JF - JSTNAR JO - jwss VL - 18 IS - 67 PY - 2014 Y1 - 2014/6/01 TI - Effect of the wheat (Triticum aestivum L.) rhizosphere on the bioavailability and fractions of zinc in some calcareous soils TT - اثر ریزوسفر گندم ((Triticum aestivum L. بر قابلیت استفاده و شکل‌های روی در تعدادی از خاک‌های آهکی N2 - Rhizosphere is a small zone and has quite different chemical, physical, and biological properties from bulk soil. This research was performed to study the available Zn and its fractions in the wheat rhizosphere and bulk soils by using rhizobox at greenhouse conditions. Total organic carbon (TOC), dissolved organic carbon (DOC), microbial biomass carbon (MBC) and available Zn using 7 chemical procedures and Zn-fractions were determined in the rhizosphere and bulk soils. The results indicated that TOC, DOC and MBC in the rhizosphere were increased significantly (P SP - 137 EP - 149 AU - H. R. Motaghian, AU - A. R. Hosseinpur, AU - F. Raiesi, AU - J. Mohammadi, AD - KW - Rhizosphere KW - Zinc KW - Fractions KW - Chemical extractants. UR - http://jstnar.iut.ac.ir/article-1-1994-en.html ER -