Showing papers on "Potassium nitrate published in 2011"

Multicomponent Molten Salt Mixtures Based on Nitrate/Nitrite Anions

Abstract: Molten salts are a promising medium for thermal energy transfer and storage. They have a very low vapor pressure and most are unreactive in air. Over the past 3 decades, Sandia National Laboratories has investigated a variety of molten salt mixtures of alkali nitrates and, most recently, quaternary mixtures of sodium, calcium, lithium, and potassium nitrate salts. This effort led to the discovery of mixtures with liquidus temperatures below 100°C. We have now extended this work to the mixed nitrate/nitrite anion system and found compositions with liquidus temperatures below 80°C. In this paper, we present experimental results exploring the lithium, sodium, and potassium compositional space with a 1:1 molar mixture of nitrate/nitrite. From our work, we have identified a five-component system with a liquidus temperature near 70°C. Physical properties of these salts, such as viscosity and density, are reported as well as thermal stability in air. Such a molten salt mixture, with a low liquidus temperature, has the potential to make parabolic trough collectors economically competitive with traditional power generation schemes.

Foliar application of potassium nitrate affects the growth and nitrate reductase activity in sunflower and safflower leaves under salinity.

Abstract: Effect of foliar application of KNO3 on growth and the activity of nitrate reductase were studied in the leaves of sunflower (Helianthus annuus L.) and safflower (Carthamus tinctorius L.) plants growing under different levels of salinity. The seeds were sown in pots under non saline condition and saline water irrigation was started at three leaf stage after germination. Different concentration of saline water (i.e. 0.3% and 0.6%, equivalent to an EC of 4.8 and 8.6 dS/m respectively) were made by dissolving sea salt per litre of tap water. Nutrient solution of KNO3 was sprayed at the rate of 250 ppm. The concentration of Na+ and Cl- rapidly increased in the leaves of both the plants under salinity stress. In contrast the nitrate (NO3-) and soluble protein concentration were decreased with the increasing salinity. Salinity reduced leaf area, its fresh and dry weight per plant and also inhibited the activity of Nitrate reductase (NRA) enzyme. The application of KNO3 significantly reduced the increasing tendency of Na+ and Cl- and increased leaf area, its fresh and dry weight per plant, NO3- and soluble protein concentration and NR activity in leaves irrespective to the growth of plant under non saline or saline conditions.

Terahertz spectroscopy and solid-state density functional theory simulations of the improvised explosive oxidizers potassium nitrate and ammonium nitrate.

Abstract: Terahertz spectroscopy provides a noninvasive and nondestructive method for detecting and identifying concealed explosives. In this work, the room-temperature and cryogenic terahertz spectra of two common improvised explosive oxidizers, namely, potassium nitrate (KN) and ammonium nitrate (AN), are presented, along with detailed solid-state density functional theory (DFT) analyses of the crystalline structures and spectral features. At both 294 and 78 K, KN exhibits two terahertz absorption features below 100 cm–1 that have been assigned through DFT simulations to arise from hindered nitrate rotations in the KN-II crystalline polymorph. The terahertz spectrum of AN exhibits a pronounced temperature dependence. The 294 K spectrum is free of any absorptions, whereas the 78 K spectrum consists of several narrow and intense peaks. The origin of this large difference is the polymorphic transition that occurs during cooling of AN, where room-temperature AN-IV is converted to AN-V at 255 K. The 78 K terahertz spe...

Effect of Potassium Nitrate on Vegetative Growth, Nutritional Status, Yield and Fruit Quality of Olive cv. "Picual"

Abstract: 2 Abstract: The present investigation was carried out during two successive seasons 2009 and 2010 in a private orchard located at Cairo-Alexandria, desert road, Egypt (about 50 Km from Cairo) to study the effective concentration and application time of potassium nitrate (KNO ) on vegetative growth, nutritional status, yield 3 and fruit quality of Picual olive trees under sandy soil conditions. The obtained results showed that, foliar application of potassium nitrate at 4 % after final fruit set or pit hardening improve the vegetative growth, nutritional status especially in the second season and the productivity in both seasons. While sprays potassium nitrate at 4 % after pit hardening gave the best values of fruit quality and flesh oil content of Picual olive fruit in both seasons of the study.

Influence of pH and microwave calcination on the morphology of KGd(WO4)2 particles derived by Pechini Sol–Gel method

Abstract: KGd(WO4)2 (KGW) particles were synthesized at 3.5, 5.5 and 7.5 pH values by Pechini polymeric complex sol–gel method using potassium nitrate, gadolinium nitrate, ammonium paratungstate, citric acid and ethylene glycol as starting materials. Deionized water was used as solvent. Polymeric precursor gel was formed with citric acid as complexing agent and ethylene glycol as binder. Synthesized gel was analyzed by FT-IR spectroscopy. Prepared precursor gels were further annealed using resistive and microwave processes at 550 and 700 °C, respectively. The properties of heat treated samples were characterized by powder XRD, FT-IR, Raman and SEM analysis to understand the crystallinity, organic liberation, tungstate ribbon formation and surface morphology, respectively. The phase formation and different phases of intermediate oxides in pre-fired samples were investigated by powder XRD. Organic liberation in the samples in relation to temperature, and the carbon content in the pre-fired powder was analyzed using FT-IR spectrum. Raman spectrum reveals the formation of tungsten ribbons as well as the quality of the samples. The morphological changes at different synthesis conditions were observed with SEM micrographs.

Anodic corrosion inhibitors against chloride induced corrosion of concrete rebars

Abstract: The effect of anodic inhibitors [calcium nitrate Ca(NO3)2, calcium nitrite Ca(NO2)2 and potassium nitrate NaNO2] has been evaluated using cylinders with steel rebars exposed to the following environments: in the marine tidal zone, at roof top and in air of 38°C and 90% relative humidity for 4 years. The experiments showed that the half cell potentials were more negative than the visual inspections proved when anodic inhibitors are used. Inhibitor dosage on 3–4% of cement weight seems sufficient to protect the rebar against corrosion. Capillary absorption experiments showed that the concrete porosity was unaffected by the inhibitors. The concentration profiles of chloride, nitrite and nitrate were investigated with respect to leaching. However, it was difficult to find the background level of nitrite due to possible chemical alteration.

History of Nitrite and Nitrate in Food

Abstract: Saltpeter (potassium nitrate), a natural contaminant of salt, contributed historically to the pinkish-red color in salted meats Nitric oxide, derived from nitrate/nitrite reduction, when combined with myoglobin produces as the color pigment in cured meat products Nitrite prevents sporulation of Clostridium boutlinum in cured meats In 1925, the United States Department of Agriculture (USDA) approved nitrite’s use in curing brines and formulas at a maximum ingoing level of 200 ppm Residual nitrite declined in cured meats from 1930s to 1970s and has remained low since the 1980s mitigating the formation of N-nitrosamines USDA regulations restrict ingoing levels of nitrite and nitrate (if allowed) to specific levels in meat product categories Residual nitrite levels in conventional and “organic” cured meats is <10 ppm in the United States Naturally occurring nitrate in raw vegetables at retail in the United States ranges from 200 to 3,000 ppm Nitrates in the municipal water supply of 25 metropolitan U.S. cities is <5 mg/L Nitrite contributes to the safety of cured meats and currently no suitable alternative is available

Effect of nitrate poisoning on some biochemical parameters in rats.

Abstract: The present study was conducted to investigate the toxicity of potassium nitrate on glucose, cholesterol, alanine aminotransferase (ALT), aspartate aminotransferase (AST), and the possible ameliorative effect of ascorbic acid (Vitamin C). Male Wister rats are used as experimental model divided into three groups (each of 6-8 rats) and treated for six weeks as follows: Group 1: served as control; Group 2: received 2 % potassium nitrate added to the forage and Group 3: received 2 % potassium nitrate together with 1 % ascorbic acid added to rat's forage. Nitrate treatment in group 2 leads to high significant increase levels of glucose in 3 rd , 4 th , and 5 th weeks, cholesterol level increased significantly in both 4 th and 5 th weeks, while ALT levels increased in the 4 th , 5 th and 6 th weeks, and AST increased significantly in the 5 th and 6 th weeks. Addition of ascorbic acid with potassium nitrate, lead to reverse all the parameters nearly to normal. It was concluded that potassium nitrate causes significant toxic effect on some biochemical parameters which was ameliorated by ascorbic acid.

High-alkali magnesium aluminum silicate glass applicable to chemical tempering

Abstract: The invention relates to high-alkali magnesium aluminum silicate glass applicable to chemical tempering. The glass comprises the following components in percentage by weight: 55-65 wt% of SiO2, 12-24 wt% of Al2O3, 3-8 wt% of MgO, 0-1 wt% of CaO, 1-3 wt% of Li2O, 8-14 wt% of Na2O, 3-5 wt% of K2O and 0-0.5 wt% of ZrO2. Chemical tempering requires the following technological conditions that composite molten salt including 90 wt% of potassium nitrate and 10 wt% of sodium nitrate is treated for 1-12 h at 420-490 DEG C. The mechanical strengths of the high-alkali magnesium aluminum silicate glass are increased by 40-80% as compared with those of common sodium calcium silicate glass, mainly in the aspects of scratch resistance, impact resistance and bending strength.

High-power emulsion explosive and preparation method thereof

Abstract: The invention discloses a high-power emulsion explosive and a preparation method thereof, aiming to provide a novel explosive with strong explosive capacity, low energy consumption and stable quality. The high-power emulsion explosive is formed by mixing a component A and a component B, wherein the component A comprises the following raw materials in percentage by weight: 75-85 wt% of ammonium nitrate, 9-14 wt% of water, 3-5 wt% of nitrate, 0.3-2.0 wt% of urea, 0.3-3.5 wt% of modified Span-80 emulsifier, 0.3-3.5 wt% of compound oil phase, 1-1.5 wt% of paraffin and 0.8-3 wt% of quick foaming agent. The component B is one of porous granulous ammonium nitrate, or granulous ammonium nitrate or potassium nitrate. The weight ratio of the component A to the component B is 88-96:4-12. The processing method mainly comprises aqueous phase preparation, oil phase preparation, emulsification, sensitization and packaging, wherein porous granulous ammonium nitrate, or granulous ammonium nitrate or potassium nitrate is added during sensitization.

Experimental Studies and Thermodynamic Modeling of the Solubilities of Potassium Nitrate, Potassium Chloride, Potassium Bromide, and Sodium Chloride in Dimethyl Sulfoxide

Abstract: Using appropriate nonaqueous solvents to replace water as reaction medium in chemical industries has gained more and more attention recently. Many of them have the special ability to dissolve some compounds and thus may make the reaction more stable in comparison with a water-containing environment. Dimethyl sulfoxide (DMSO) is probably the most frequently mentioned aprotic nonaqueous solvent with extensive applications because of its high stability and powerful solubility. In this study, the solubilities of four inorganic salts, namely potassium nitrate (KNO3), potassium chloride (KCl), potassium bromide (KBr) and sodium chloride (NaCl), in DMSO are measured in the temperature range of 302 through 354 K using a dynamic method. The solubility order of the salts in DMSO is experimentally determined as KNO3 > KBr > NaCl > KCl. The molality solubilities show linear dependencies on temperature and the temperature effect on the solubility for the salts follows the same order as the solubility result. The solub...

Water culture nutrient solution of blueberry and preparation method thereof

Abstract: The invention belongs to the technical field of fruit tree culture, in particular to a water culture nutrient solution prescription of a blueberry and a preparation method thereof In the technology, the water culture nutrient solution of a blueberry comprises the following elements: 95-110mg/L of N, 10-15mg/L of P, 125-135mg/L of K, 80-90mg/L of Ca, 20-28mg/L of Mg, 4-6mg/L of Fe, 03-06mg/L of B, 04-06mg/L of Mn, 004-006mg/L of Zn, 002-004mg/L of Cu and 0002-0004mg/L of Mo A pH value of the water culture nutrient solution is 48 to 55 The preparation method of the nutrient solution comprises the following steps of: weighing EDTA (Ethylene Diamine Tetraacetic Acid) ferrisodium, boric acid, manganese sulfate tetrahydrate, zinc sulphate heptahydrate, copper sulfate pentahydrate and ammonium molybdate tetrahydrate for dissolving into water and blending into 100 times of trace element mother liquor for storage and later use; additionally weighing calcium nitrate tetrahydrate, potassium nitrate, monopotassium phosphate and magnesium sulfate heptahydrate for dissolving into water; absorbing the trace element mother liquor into the solution according to the consumption; adding water for quantifying to needed volume; uniformly stirring; and adjusting the pH value of the solution to be 48 to 55 with 01mg/L dilute H2SO4 or dilute NaOH By utilizing the technology, the water culture aims of growing a plurality of aquatic roots in 20 days after a blueberry seedling is transplanted and having the plant survival rate of more than 90 percent can be achieved

Chemical composition, nitrate reductase activity and plastid pigments content in lucerne under the influence of ammonium and nitrate form mineral nitrogen.

Abstract: A pot trial was carried out at the Institute of Forage Crops, town of Pleven, Bulgaria (2003-04). Whereas ammonium and nitrate forms of mineral nitrogen are assimilated for the plants, the influence of these two forms of mineral nitrogen on the chemical composition, nitrate reductase activity and plastid pigments content of lucerne in conditions of optimum moisture and water deficiency stress was tested. Urea as a source of ammonium nitrogen and potassium nitrate as a source of nitrate nitrogen were used. Rates of 70, 140 and 210 mg N kg -1 soil were applied. It was found that mineral nitrogen in ammonium form, applied at the doses of 140 and 210 mg N kg -1 soil at optimum moisture increased crude protein content by 5-13%, and in the nitrate form at the same doses, by 3-7%. Crude protein content under water deficiency stress increased by 4-21% for ammonium, and by 3-12% for the nitrate form of mineral nitrogen. When the plants were supplied insufficiently with nitrogen, water deficiency stress more strongly deteriorated the chemical composition of lucerne, crude protein decreased by 6% and crude fiber increased by 10%. The application of mineral nitrogen under optimum moisture decreased calcium and phosphorus content, and the decrease was bigger for the nitrate form (up to 10% for calcium, and 23% for phosphorus). Under water deficiency stress the content of calcium and phosphorus decreased, but there were no differences for two forms of mineral nitrogen. At the optimum moisture and water deficiency stress, there was a similar tendency to reduce nitrate reductase activity in leaves, when applied mineral nitrogen at a dose of 70 mg N kg -1 soil in both forms, and to increase at the doses of 140 and 210 mg N kg -1 soil. The total content of plastid pigments increased as compared to unfertilized control, when mineral nitrogen was applied in both forms.

Vapor—Liquid Equilibrium of Aqueous Alkaline Nitrate and Nitrite Solutions for Absorption Refrigeration Cycles with High-Temperature Driving Heat

Abstract: Vapor−liquid equilibria of aqueous solutions of lithium nitrate + potassium nitrate + sodium nitrate in the mass ratio (53:28:19) and lithium nitrate + potassium nitrate + sodium nitrite in mass ratio (53:35:12) were obtained using a static method in the temperature range (333.15 to 473.15) K at 20 K intervals. Both mixtures were considered as binary working fluids (water/salts). The salt mass fraction was varied from 0.50 to 0.95. Barker’s method was used to calculate the liquid composition from the initial overall composition of the sample and the measured pressure and temperature. The vapor−liquid equilibrium data obtained were correlated using an analytical polynomial equation. The calculated and measured data showed good agreement. The vapor−liquid equilibrium data of both mixtures showed similar behavior, but the risk of crystallization is lower for the solution of lithium nitrate + potassium nitrate + sodium nitrite in mass ratio (53:35:12), which favors the operation of absorption refrigeration cy...

Growth and Uptake of Sodium and Potassium in Broad Bean (Vicia faba L.) under Salinity Stress

Abstract: Vicia faba L. (broad bean or faba bean), a food crop of worldwide importance, is moderately tolerant of saline conditions, such as are increasingly common in Mediterranean countries and in Turkey. Our objective was to determine the influence of two salinity levels [50 and 100 mM sodium chloride (NaCl)] and two potassium salts, potassium nitrate (KNO3) (N1 and N2) or potassium acetate (CH3COOK) (A1 and A2), on the development of seedlings of two cultivars of broad bean (cvs. Eresen 87 and Filiz 99) grown in pots of perlite under controlled greenhouse conditions. Flame photometer (FP) analysis of tissues from roots, stems, and leaves of 3-month-old seedlings showed significant differences in growth, internodal length, and potassium (K+)/sodium (Na+) ratios. The FP analyses revealed that Na+ was the ion most responsible for inhibition of growth parameters seen in both cultivars and salt treatments. K+ contents were consistently higher in cv. Filiz 99 than in cv. Eresen 87. Possible correlations between these...

Studies on Molecular Interactions of Some Electrolytes in Water by Volumetric and Viscometric Measurments at T = (303.15 to 323.15 K)

Abstract: The viscosities and densities of potassium chloride, potassium nitrate, magnesium chloride, and magnesium nitrate have been measured at 303.15, 308.15, 313.15, 318.15 and 323.15 K in aqueous solution. The viscosity data were analyzed by using Jones–Dole equation. The values of apparent molar volume, limiting apparent molar volume have been evaluated from the density data. The results were interpreted in the light of ion–ion and ion–solvent interactions and of structural effects of the solutes in solution. Keywords : Density; Apparent molar volume; Viscosity; Jones–Dole equation. © 2011 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. doi:10.3329/jsr.v2i2.6288 J. Sci. Res. 3 ( 2), 437-444 (2011)

New water flushed fertilizer and production method thereof

Abstract: The invention relates to a new water flushed fertilizer and production method thereof. The new water flushed fertilizer comprises, by weight: 45-65% of bamboo vinegar, 8-12% of urea, 4-6% of potassium dihydrogen phosphate, 10-20% of potassium nitrate, 1-3% of amino acid, 3-6% of glucose, and 2-4% of boric acid. The production method includes the following steps: first, amino acid is added to bamboo vinegar and fully dissolved; second, boric acid is added and fully dissolved; third, urea is added and fully dissolved; fourth, potassium dihydrogen phosphate is added and fully dissolved; fifth, potassium nitrate is added and fully dissolved; sixth, glucose is added and fully dissolved. In the production process, every added ingredient needs to be completely dissolved for full utilization.

Novel acidic molybdenum aluminum etching liquid and preparation process thereof

Abstract: The invention discloses novel acidic molybdenum aluminum etching liquid and a preparation process thereof. The novel acidic molybdenum aluminum etching liquid comprises phosphoric acid, acetic acid, nitric acid, potassium chloride, metal nitrate and pure water, and is prepared by controlling the phosphoric acid, the acetic acid and the nitric acid in the raw materials by using high-acidity cation exchange resin, removing impurity ions from the phosphoric acid, the acetic acid and the nitric acid and uniformly mixing the six raw materials. The etching liquid preparation process comprises the following steps of: keeping the rotation speed of a stirrer of a batching tank at normal temperature and normal pressure; adding the phosphoric acid, the acetic acid, the nitric acid, the potassium chloride, potassium nitrate and the pure water into the batching tank sequentially; fully stirring; and filtering by using a filter to obtain the molybdenum aluminum etching liquid. The molybdenum aluminum etching liquid has low granularity and high purity, and can control etching angles and the etching amount of different metal layers and improve the yield of an etched product.

Sensitivity of Soil CO2 Emissions to Fertilizer Nitrogen Species: Urea, Ammonium Sulfate, Potassium Nitrate, and Ammonium Nitrate

Abstract: Batch aerobic incubation experiment was conducted using an acidic loam soil for 110 days with five N treatments: no N [Control], (NH2)2CO [U], (NH4)2SO4 [AS], KNO3 [PN], and NH4NO3 [AN]. Cumulative amount of CO2 emission (mg · C/kg) was 1066.5 [U], 951.4 [AS], 753.8 [PN] and 847.0 [AN] during the entire incubation period. Sensitivity of soil organic carbon (SOC) mineralization (expressed as the ratio of the amount of N fertilization-induced CO2-C emission to a given amount of N addition) was greatest in U followed by AS, AN, and PN treatments, suggesting that application of NO3 −-based fertilization would be helpful in reducing fertilizer-induced SOC mineralization in agricultural soils.

Catalyst for esterification and deacidification and preparation method thereof

Abstract: The invention relates to a catalyst for esterification and deacidification and a preparation method thereof, which are used for lowering the acid values of high-acid-value crude oil and distillate oil. The catalyst refers to a hydrotalcite or loaded hydrotalcite solid alkali catalyst. The molar ratio of magnesium to aluminum in the hydrotalcite is 1 to 4. Loaded hydrotalcite consists of 70 to 95 mass percent of carrier and 5 to 30 mass percent of active component, wherein the carrier is hydrotalcite; the active component is one of potassium carbonate or potassium nitrate or potassium fluoride or potassium hydroxide or potassium acetate; and the carrier is soaked in aqueous solution which contains the active component, is dried and is calcined at the temperature of between 350 DEG C and 550 DEG C for 2 to 8 hours. Due to the adoption of the catalyst, the defects of easy toxication of an acid catalyst and small specific surface and small pore canal of the conventional alkali metal oxide are overcome, the acid value of the high-acid-value crude oil or distillate oil can be lowered to be below 0.5 mgKOH/g or the deacidification rate is more than 90 percent.

Method for measuring moisture absorption performance of wallpaper

Abstract: The invention discloses a method for measuring the moisture absorption performance of wallpaper. The moisture absorption performance of the wallpaper is measured by using a saturated solvent, the saturated saline solution of magnesium nitrate, the saturated saline solution of potassium nitrate, the saturated saline solution of magnesium chloride, and the saturated saline solution of sodium chloride are selected so as to simulate the humidity environment, and the volume ratio of crystals separated out in the saturated saline solution to the saturated saline solution is 1/5-1/6; and the humidity in a dryer which is obtained by the four kinds of the saturated saline solution is controlled to be 30 percent, 50 percent, 70 percent and 90 percent respectively, the samples of the wallpaper are placed in the environments with different humidity for the measurement of water absorbing capacity, and the water absorbing capacity can be obtained through the mass difference before and after water absorption. The stimulated humidity environment is closer to the actual application environment of the wallpaper, the measurement result is more accurate, the moisture absorption performance of the wallpaper can be analyzed quantitatively, and the method is easy to operate and is low in measurement cost.

Ion exchange using nitrates and nitrites to prevent optical degradation of glass

Abstract: A method of chemically strengthening a glass article having an antireflective coating in which the reflectance of the coating is not significantly degraded by chemical strengthening. The glass article having the antireflective coating is strengthened using an ion exchange medium that comprises potassium nitrate and at least about 5 wt % potassium nitrite. Also provided are a glass article having an antireflective surface that is not degraded by such ion exchange and an ion exchange medium comprising potassium nitrate and at least about 5 wt % potassium nitrite.

Industrial method for citrate alkaline non-cyanide copper plating on steel substrate

Abstract: The invention discloses an industrial method for citrate alkaline non-cyanide copper plating on a steel substrate, and the industrial method comprises the following steps: evenly mixing 30g/L of copper sulphate, 147g/L of sodium citrate, 45g/L of potassium sodium tartrate, 10g/L of sodium bicarbonate, 0.2g/L of polyethylene glycol, 1.2mg/L of 2-mercapto benzothiazole, 1g/L of hg01 additive, 1mL/L of hg02 additive and 8g/L of potassium nitrate in a retort; and adjusting pH to 9.0 by sodium hydroxide; and electroplating at 45-50DEG C with the current density being 1-10A/dm for 5-10 minutes to obtain the citrate alkaline non-cyanide copper-plated steel substrate. The performance of the used plating solution and a plating layer obtained with the method is excellent, and the plating layer and the substrate have good bonding force and large coverage area. The citrate alkaline non-cyanide copper-plated steel substrate is economical and environmentally-friendly and has the advantages of long use cycle and good stability.

Effect of soil potassium levels and different potassium fertilizers on yield, macroelement and chloride nutrion status of apple trees in full fruition period

Abstract: The experiment was established in the spring 1999 on lessive soil developed from light boulder clay. Apple trees of Golden Delicious cv. on M.26 rootstock were planted in 3.5 × 1.2 m (2381 trees·ha -1 ) spacing. Research involved the effect of diversi- fied levels of potassium fertilization: 12, 16 and 20 mg K 100 g -1 d.m. of soil and three types of potassium fertilizers: potassium chloride (KCl), potassium sulfate (K2SO4) and potassium nitrate (KNO3) on trees yielding and nutrition, as well as nutrient contents in the soil. Potassium fertilization using potassium chloride, potassium sulfate and potassium nitrate resulted in increased content of available potassium both in arable (0-20 cm) and in subarable (20-40 cm) layers of an apple orchard. Increase of available potassium con- tent from 12 to 20 mg K·100 g -1 f. m of soil, due to fertilization with potassium chloride, potassium sulfate and potassium nitrate did increase soil pH (in H2O) in arable and su- barable layers as a result of higher contents of available calcium. Alkalizing effect of po- tassium sulfate and potassium nitrate, generally assumed as physiologically acidifying, occurred on neutral and alkaline soils (pH (in H2O) over 6.90). Fertilization with potas- sium chloride, potassium sulfate and potassium nitrate increased the content of sulfates in arable and subarable layers. The same result was observed in the case of chlorides in su- barable layer. Application of potassium fertilization with potassium nitrate brought about decreased values of available magnesium content only in subarable layer. Due to the use of high rates of potassium nitrate, on the level 20 mg K·100 g -1 of soil, there was observed increased soil salinity (EC) both in arable and subarable layers. Introduction of potassium fertilization and increasingly higher rates of potassium fertilizers did not influence on the content of nitrogen, phosphorus, potassium, calcium, magnesium, sulfur and chlorine in apple tree leaves. Increasing potassium levels in the soil and potassium fertilizers did not af- fect the yield of Golden Delicious apple trees after coming them into full fruition period.