توابع انتقالي و پهنه بندي عنصر آهن در بذر گندم و خاك برخي مزارع جنوبي استان خوزستان

Pedo-transfer Functions and Mapping of Fe in Wheat Seed under South parts Farms of Khouzestan

This research was conducted for preparing pedo-transfer functions and mapping of - Iron (Fe) on seed and wheat farms soils of some regions Khuzestan province. In order to, at maturity growth stage of wheat, 121 samples (soil and wheat) were taken from Ahvaz, Dasht-e-Azadegan, Hendijan, Khoramshar, Mahshar, Shadegan, Ramhormoz and Omedeyeh using a weighing method. All samples (seed and soil) were analyzed for soil properties and Fe of seed. The results revealed that Fe concentrations average on seed and soil were measured 56.5 and 12.56 (mg.kg-1) respectively. Also, more than 50% soils, Fe-DTPA concentration was less than 10 (mg.kg-1). A significant correlation was obtained between the seed-Fe and soil salinity (r=0.74 ). There was significant (p<0.05) correlation between DTPA-Fe and Clay content (r=0.73 ), cation exchange capacity (CEC) (r=0.82 ), P-available (r=0.82 ) and EC (p<0.01) (r=0.86 ) of the soils. Hence, The soil salinity had main role on soil- Fe bioavailability for plant uptake. The regression pedo-trasfer function showed that seed Fe concentration depended on sol salinity, P-available and CEC (R2= 0.96). The semivariograms of seed and soil Fe concentrations revealed spherical model can explain seed and soil Fe spatial variability in study regions.