abstract- greenhouse experiment was conducted in factorial experiment arranged as a completely randomized design (crd) to evaluate the effect of glomus intraradices, pseudomonas fluorescence and soil drying on different forms of potassium (k) and the changes of clay minerals in a calcareous soil after maize planting. treatments consisted of arbuscular mycorrhizal (am) fungus at two levels: g0 (...

Zeolite application to clayey soils may change potassium (K) pools distribution and its release rate. To test this hypothesis, two heavy-textured calcareous soils with different mineralogy (smectitic and mixed by XRD) from southern Iran were selected. Experiment was a completely randomized factorial arrangement. Treatments consisted of two soils and two zeolite levels (0 and 5%) and wetting-dry...

the potassium pools of five major physiographic units of urmia region in western azarbaijan province were studied to investigate the distribution of k forms as a function of clay mineralogy and physiographic units. for this, soil samples from different horizons of ten pedons were selected and analyzed for physiochemical properties, mineralogy of clay fraction, and forms of k. analyses of xrd re...

ABSTRACT- The present research was conducted to study K forms and fixation in soils of southern Iran (Hormozgan Province) with aridic and aridic-ustic regimes and to address the relations between soil mineralogy and potassium forms. Thirteen surface soil samples (0-25 cm) were collected from different regions and analyzed in laboratory. Illite and feldspar and mica are the major clay and soil m...

the present study was carried out in kharkeh research station, kurdestan province, western iran to investigate the effects of the change in land use on the degradation of mol-lisols, their organic carbon content, clay mineralogy and k+ status. the study area was partly under cultivation (for over 40 years) and partly preserved as rangelands. the re-sults revealed that mollisols are the dominant...

The mineralogy and chemistry of the less than 20μm fraction of marine sediments at Morphou Bay, north-west Cyprus, are presented to characterise fine-grained sediment supplies from basic and ultrabasic rocks of the Troodos Massif within a typological setting. The sediments comprise a mixture of smectite, illite, kaolinite and iron rich chlorite. They also contain amorphous iron oxides/hydroxide...