نتایج جستجو برای: exchangeable potassium
تعداد نتایج: 81121 فیلتر نتایج به سال:
The aim of this study was to assess the kinetics of nonexcheangable potassium release in surface and subsurface soil horizons, using organic and inorganic extractions, in Kohgilouye-va-Boyerahmad Province. Kinetics of K+ release was studied by successive extractions of K from 64 selective surface and subsurface soil samples, using 0.01 M CaCl2 and 0.01 M oxalic acid, for 1948 h, with two replic...
Irrigation with distillery effluent, besides influencing crop yield, may have considerable impact on physical properties of soil because of its high salt and organic carbon contents. This experimental study was conducted to evaluate the effect of distillery effluent on hydraulic conductivity of a sandy loam alluvial soil and compare the effect of inorganic salts of potassium (K) with that of di...
The aim of the present research was to study the effects of weak cation exchange resins, polacrilex with exchangeable H+ and polacrillin potassium and strong cation exchange resin sodium polystyrene sulfonate on water uptake behavior of ranitidine hydrochloride. Drug resin complexes (DRC) were prepared and evaluated for the percentage of moisture gain when placed in a humidity c...
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the aim of the present research was to study the effects of weak cation exchange resins, polacrilex with exchangeable h+ and polacrillin potassium and strong cation exchange resin sodium polystyrene sulfonate on water uptake behavior of ranitidine hydrochloride. drug resin complexes (drc) were prepared and evaluated for the percentage of moisture gain when placed in a humidity chamber at 40e2 °...
The use of the Mehlich-3 (M3) soil test procedure to assess plant availability numerous macro and micronutrients has become common at testing labs across US. is used for tests phosphorus (P) potassium (K) in Kansas; however, data other base cations existing methods are scarce Kansas soils. objective this study was investigate relationship between M3 ammonium acetate (AA) extractable calcium (Ca...
Soil cation exchange property (SCEP) is important in soil development and environmental buffering. However, the variations SCEP its correlation with soil-forming factors subsurface are not fully understood. In this study, we quantified surface as a function of parent material, vegetation, hillslope position, type. Fifty upland profiles from mid-subtropical China were selected. The capacity (CEC...
ABSTRACT The use of high doses vinasse in sugarcane crop can cause modifications the chemical characteristics soil. aim this study was to evaluate effect application on an Ultisol cultivated with for 210 days. treatments used were equivalent 0 (D0), 150 (D150), 300 (D300), 600 (D600) and 1200 (D1200) m3 ha-1 plus a control treatment mineral fertilization. experimental design completely randomiz...
flood water contains high amount of sediment affecting the fertility of the coarse grain alluvial fans and flood plains through increasing nutrients. in this study, the effects of the flood water spreading on the soil nutrients recovery were investigated during 10 years (2004-2014) at the poldasht flood spreading station of west azarbaijan in iran. flooded three upper strips were selected at th...
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