Volume 24, Issue 2 (Summer 2020)                   JWSS 2020, 24(2): 209-220 | Back to browse issues page

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Rezapour S, Najafi P, Atashpaz B. The Effect of Different Soil Types on the Concentration, Distribution, and Trend of Some Micro Nutrients in the Apple Orchards of Urmia Plain. JWSS. 2020; 24 (2) :209-220
URL: http://jstnar.iut.ac.ir/article-1-3774-en.html
1. Department of Soil Science, Faculty of Agriculture, Urmia University, Urmia, Iran. , s_rezapour2000@yahoo.com
Abstract:   (247 Views)
In the present study, six soil profiles belonging to five soil types were dug, described and sampled. Soil samples were analyzed for the determination of different physicochemical properties and total and DTPA-extractable iron (Fe), zinc (Zn), copper (Cu), manganese (Mn), lead (Pb), and cadmium (Cd). Considering the variability of pH and calcium carbonate equivalent, the examined soils were alkaline and calcareous. A considerable change in the values of the DTPA fraction of Fe (1.4-25.8 mg/kg), Zn (0.01-3.3 mg/kg), Cu (0.32- 6.2 mg/kg), Mn (1-11.8 mg/kg), Cd (0.05- 0.12 mg/kg) and Pb (0.22- 2.56 mg/kg) as well as in the total fraction of Fe (10.6-20.6 g/kg), Zn (35- 67.5 mg/kg), Cu (9 to 26.40 mg/kg), Mn (262- 588.8 mg/kg), Cd (0.5- 1.75 mg/kg) and Pb (17- 31.3 mg/kg) was observed in  different soils. The content and pattern of both DTPA and total fraction of the metal were varied among the soil types, which could be related to several processes such as the diversity of weathering rate, geomorphologic condition, soil formation process, different physicochemical properties of soils, and the inputs of different agrochemical compounds. The concentration of both DTPA and total fraction of the metal were in the acceptable maximum level in the majority of the soil samples.
Full-Text [PDF 542 kb]   (53 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2018/09/9 | Accepted: 2019/11/5 | Published: 2020/07/31

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