scholarly journals Differences in soil sulfur fractions due to limitation of atmospheric deposition

2009 ◽  
Vol 55 (No. 8) ◽  
pp. 344-352 ◽  
Author(s):  
J. Balík ◽  
M. Kulhánek ◽  
J. Černý ◽  
J. Száková ◽  
D. Pavlíková ◽  
...  
Keyword(s):  
Field Experiments ◽  
Farmyard Manure ◽  
Climatic Conditions ◽  
Soil Samples ◽  
Water Soluble ◽  
Mineral Fertilizers ◽  
Organic S ◽  
Soil Sulfur ◽  
Term Field

The aim of this work was to estimate the changes in contents of different sulfur (S) fractions in soils under conditions of lowering inputs of S from emissions together with the influence of application of manure and mineral fertilizers. Soil samples from long-term field experiments were used for this purpose. The samples were taken from 10 sites from precise long-term field experiments with different soil-climatic conditions in the Czech Republic. The samples were analyzed using the following fractionation: (i) water soluble S (H<sub>2</sub>O extracts), (ii) sorbed S (0.032M NaH<sub>2</sub>PO<sub>4</sub> extracts) and (iii) S occluded with carbonates (1M HCl extract). Furthermore, the concentration of total S (S<sub>tot</sub>) and organic S (S<sub>org</sub>) was determined. Soil samples were taken in the years 1981 and 2007. During 26 years a decrease of S<sub>tot</sub> by about 3–8%, water soluble S by 65–68% and sorbed S by 39–44% were observed in the topsoil of the evaluated soils. Furthermore, a low increase in the content of organic S was observed. The estimated ratio of S<sub>org</sub> reached 78.7–80.9% from S<sub>tot</sub> in the year 1981 and 87.7–89.8% in 2007. Farmyard manure (40 t/ha) applied every 4 years did not have a significant influence on S fractions and S<sub>tot</sub> contents in soils; intensive S fertilizing increased S<sub>tot</sub> and mobile S forms contents in soils. Very close correlations were obtained especially between S<sub>tot</sub> and water soluble S and organic S.

scholarly journals Balance of potassium in two long-term field experiments with different fertilization treatments

2019 ◽  
Vol 65 (No. 5) ◽  
pp. 225-232 ◽  
Author(s):  
Jiří Balík ◽  
Jindřich Černý ◽  
Martin Kulhánek ◽  
Ondřej Sedlář ◽  
Pavel Suran
Keyword(s):  
Field Experiments ◽  
Spring Barley ◽  
Farmyard Manure ◽  
Climatic Conditions ◽  
Mineral Nitrogen ◽  
Nitrogen Fertilizers ◽  
Mineral Fertilizers ◽  
Exchangeable K ◽  
Negative Balance

Balance of potassium (K) was observed in long-term stationary field experiments (21 years) at two sites with different soil and climatic conditions (Luvisol, Cambisol). The following crops were rotated within the trial: potatoes- winter wheat-spring barley. All three crops were grown each year. The trial comprised 6 treatments: (1) no fertilization; (2) farmyard manure; (3) half dose of farmyard manure + nitrogen (N) in mineral nitrogen fertilizers; (4) mineral nitrogen fertilizers; (5) NPK in mineral fertilizers; (6) straw of spring barley + N in mineral nitrogen fertilizers. The recovery rate of potassium from farmyard manure by crops was 24–26%, from mineral fertilizers it was 27–52%. Different fertilization intensities were manifested by significant differences in the content of exchangeable K in soil. Changes in non-exchangeable K (K<sub>ne</sub>) were recorded only at the Luvisol site (850 mg K<sub>ne</sub>/kg), but not at the Cambisol site (3000 mg K<sub>ne</sub>/kg). The maximum negative balance (–2376 kg K/ha/21 years) was recorded at the mineral nitrogen fertilization treatment.

scholarly journals Potassium status of sod-podzolic loamy soils

2021 ◽  
Vol 2(26) ◽  
pp. 233-243
Author(s):  
V.G. Sychev ◽  
◽  
L.V. Nikitina ◽  
Keyword(s):  
Field Experiments ◽  
Soil Samples ◽  
Exchangeable Potassium ◽  
Soil Potassium ◽  
Experimental Station ◽  
Organic Mineral ◽  
Term Field ◽  
Exchangeable Form

Potassium is one of the essential plant nutrients. Despite numerous surveys, some issues related to the transformation of potassium in soils require additional study. The purpose of the research was to study the potassium transformation in sod-podzolic loamy soils and its entry into plants influenced by various farming methods in long-term field experiments of different duration. Field experiments were conducted at the experimental station of the FSBSI “Pryanishnikov Institute of Agrochemistry” located in the Moscow region, Domodedovo district, village of Barybino. To study the potassium status, an archive of soil samples created in the Geographical Network of Experiments with Fertilizers was used. Soil samples were collected in long-term field experiments after their closure (experiment SH-8, year of laying – 1971–1973, duration – 14 years) or modification (experiment SH-5, year of laying – 1964-1966, duration – 28 years). The experimental schemes included the systematic introduction of various fertilizing systems (organic, mineral, organo-mineral) and the determination of their impact on crop rotation productivity and soil fertility. Previous studies have shown that the formation of the crop yield in the context of long-term potassium deficiency burdened by the absence of fertilization was chiefly due to the consumption of non-exchangeable potassium by plants. For the 14–year period, the annual use of non-exchangeable potassium in the control and NP variants was 62.0-63.0 kg K2O/ha. As potassium reserves in the soil of the control variant become depleted (longer experiment), its assimilation from the non-exchangeable form decreased by 1.6 times and amounted to 39.5 kg K2O/ha. The use of a mineral fertilizing system (potassium dose < 90 kg/ha for 14 years) increased the annual mobilization of the non-exchangeable form of the element (over 100 kg/ha of K2O). The transformation of soil potassium forms that differed in the degree of their availability for plants was determined by the fertilizing systems, the doses of potassium fertilizers in the systems, as well as the duration of the experiments.

scholarly journals Evaluating of soil sulphur forms changes in long-term field experiments of Látókép

2019 ◽  
pp. 71-76
Author(s):  
Evelin Kármen Juhász ◽  
Andrea Balláné Kovács
Keyword(s):  
Winter Wheat ◽  
Field Experiment ◽  
Field Experiments ◽  
Stem Elongation ◽  
Water Soluble ◽  
Research Station ◽  
Npk Fertilizers ◽  
Sulphate Content ◽  
Term Field

The aim of this work was to evaluate the changes of different sulphur forms (soluble, adsorbed) in chernozem soil in a long-term field experiment supplied with increasing doses of NPK fertilizers for a long time. In addition, other objective of this study included the examination of the applicability of recommended extractants of the different sulphate fraction in Hungarian soils. A long-term field experiment was established at the Research Station of Látókép of the University of Debrecen in 1984. In addition to control, two levels of NPK fertilizer doses have been used with irrigated and non-irrigated variants. Winter wheat and corn were cropped in a crop rotation on plots. Soil samples were collected in three different development stages of winter wheat, at the stage of stem elongation (April), flowering (May) and ripening (June of 2018) from the topsoil (0–20 cm) of experiment plots. Water-soluble inorganic sulphate was extracted with 0.01M CaCl2 solutions. The soluble plus adsorbed sulphate was extracted with 0.016M KH2PO4 solution. Sulphate was measured by turbidimetric method. 0.01M CaCl2-SO42— ranged between 0.293–1.896 mg kg-1 and the 0.016 M KH2PO4-SO42- varied between 5.087–10.261 mg kg-1. The values of KH2PO4 SO42- was higher than that of CaCl2-SO42-, because KH2PO4 extracted the adsorbed and soluble fractions of sulphate, while CaCl2 extracted the soluble sulphate fraction. The amount of absorbed sulphate was calculated by the differences of KH2PO4- SO4 and CaCl2-SO4. The KH2PO4 characterizes mainly the adsorbed sulphate fraction much more than the water-soluble fraction. KCl is the most widely used extractant for the determination of plant available sulphate content of soil in Hungary; therefore, KCl-SO42- fraction also was determined. The KCl-SO42- ranged between 0.328–2.152 mg kg-1. The CaCl2-SO42- and KCl-SO42- fractions were compared and based on Pearson's linear correlation, moderate correlation was established (r=0.511) between them. In all three extractant (0.01M CaCl2, 1M KCl, 0.016 M KH2PO4) higher sulphate fractions were measured in the fertilized plots where superphosphate had been supplied for ages until 2010. The arylsulphatase activity of soil also was determined and ranged between 9.284 and 26.860 µg p-nitrophenol g-1 h-1. The lowest value was observed in the treatment with highest NPK2 dose, both in irrigated and non-irrigated areas.

scholarly journals Different soil fertility conditions depending on different land use methods

2012 ◽  
pp. 169-172
Author(s):  
Sándor Hoffmann
Keyword(s):  
Soil Fertility ◽  
Field Experiments ◽  
Farmyard Manure ◽  
Optimum Level ◽  
Mineral Fertilization ◽  
Yield Data ◽  
Npk Fertilizers ◽  
Local Climate ◽  
Term Field

In precision nutrient management the most important aspect is adaptation but we should consider the possibility of the long-term improvement of soil fertility within the less fertile landscape zones.  This possibility can be evaluated principally by long-term field experiments, which are running on similar soil types. The results of these field experiments can indicate that which soil fertility status should be attained. Some more important soil fertility data, (such as pH, P-, K- and soil organic matter (SOM) content) of a long-term field  experiment with increasing farmyard manure(FYM) doses or equivalent NPK fertilizers, set up on an Eutric cambisol, are presented. The yieldincreasing capacity of FYM doses was only 82%, as compared to the equivalent amount of mineral NPK, but long-term FYM treatments resulted in 10% higher SOM content than that of equivalent NPKfertilizer doses. The studies indicate that SOM content is a function of local climate and clay content of the soil, and neither long-term high FYM doses can increase SOM content steadily above a supposed steady-state value. However we have to make efforts to keep the optimum level. The lowest soil reactions developed both with the highest NPK doses and without any fertilization. AL-P2O5 content of soil was increased more by mineral fertilization than by FYM treatments, but in case of AL-K2O content there was no difference between the fertilization variants. However the highest doses of both fertilization  variants increased soil nutrient content to an excessive degree. Wecould get very valuable data from the unfertilized control plots as well, where long-term yield data suppose 48 kg ha-1 year-1 air-borne N-input.

scholarly journals   Sulfur fractions in particle-size separates as influenced by long-term application of mineral and organic fertilizers

2012 ◽  
Vol 58 (No. 5) ◽  
pp. 242-248 ◽  
Author(s):  
H.W. Scherer ◽  
G. Welp ◽  
S. Förster
Keyword(s):  
Particle Size ◽  
Farmyard Manure ◽  
Size Fraction ◽  
Water Soluble ◽  
Organic Fertilizers ◽  
Particle Size Fraction ◽  
Size Fractions ◽  
Organic S ◽  
Particle Size Fractions

A field experiment established in 1962 was chosen to investigate the effect of long-term application of farmyard manure (FYM), compost (COM) and sewage sludge (SS), respectively, in two increments as compared to mineral fertilizer on inorganic and organic S fractions in particle-size separates (&lt; 0.002 mm, 0.002&ndash;0.02 mm, 0.02&ndash;2 mm). Independent of the particle-size the application of the high amounts of COM and SS resulted in the highest total S contents. It is evident that the particle-size fractions &lt; 0.002 mm contained the majority of total soil sulfur (S). The content of plant available S (water-soluble and adsorbed SO<sub>4</sub><sup>2&ndash;</sup>) decreased with increasing particle-size, while the influence of the kind and amount of organic fertilizers was negligible. As compared to C-bonded S sulfate esters were the dominant organic S fraction in size separates. The content of both organic S fractions was highest in the particle-size fraction &lt; 0.002 mm and lowest in the particle-size fraction 0.02&ndash;2 mm. The influence of the application of organic fertilizers was less pronounced. Only high application rates of COM and SS, respectively, resulted in the highest contents of both organic S fractions in the particle-size fractions 0.002&ndash;0.02 mm and 0.02&ndash;2 mm. &nbsp; &nbsp;

scholarly journals Influence of long-term fertilizer application on changes of the content of Mehlich-3 estimated soil macronutrients

2014 ◽  
Vol 60 (No. 4) ◽  
pp. 151-157 ◽  
Author(s):  
M. Kulhánek ◽  
J. Balík ◽  
J. Černý ◽  
F. Vašák ◽  
Š. Shejbalová
Keyword(s):  
Sewage Sludge ◽  
Crop Rotation ◽  
Field Experiments ◽  
Soil Phosphorus ◽  
Farmyard Manure ◽  
Magnesium Content ◽  
Fertilizer Application ◽  
Climatic Conditions ◽  
Total Magnesium

The aim of this work is to evaluate the changes of Mehlich 3 &ndash; P, K, Ca and Mg contents in soil during a long-term field experiments with sewage sludge, farmyard manure (FYM) and mineral NPK (NPK) application, compared to the control non-fertilized treatment. The experiment was established at the Humpolec and Suchdol sites (Czech Republic). Potatoes, wheat and barley were grown in crop rotation. Fertilizing system was based on the same nitrogen dose of 330 kg N/ha per one crop rotation. Archive soil samples from the beginning of the experiment (1996) and from the end of each year&rsquo;s crop rotation (1999, 2002, 2005, 2008 and 2011) were analyzed. In spite of the different soil-climatic conditions of the studied sites, very similar tendencies of P, K, Ca and Mg contents changes after the fertilizing systems used were observed in the soil. In case of the same nitrogen dose (330 kg N/ha), sewage sludge appeared to be better source of bioavailable soil phosphorus compared to the farmyard manure and NPK. On the contrary, FYM was a better source of bioavailable potassium and magnesium, despite the lower total magnesium content in FYM. The NPK treatment was the best long-term source of bioavailable potassium.

scholarly journals Utilization of the biological nitrogen fixation for soil evaluation

2011 ◽  
Vol 49 (No. 8) ◽  
pp. 359-363 ◽  
Author(s):  
T. Šimon
Keyword(s):  
Nitrogen Fixation ◽  
Field Experiments ◽  
Symbiotic Nitrogen Fixation ◽  
Plant Biomass ◽  
Nitrogenase Activity ◽  
Farmyard Manure ◽  
Soil Samples ◽  
Soil Evaluation ◽  
Biological Nitrogen

Non-symbiotic nitrogen fixation (potential nitrogenase activity &ndash; PNA) of soil samples originating from different plots of long-term field experiments (selected variants: Nil, NPK [mineral fertilisation: 64.6&ndash;100 kg N/ha/year], FYM [farmyard manure], and FYM + NPK from three blocks III, IV and B with different crop rotation) was determined in laboratory experiments. The symbiotic nitrogen fixation (total nitrogenase activity &ndash; TNA) of the same soil samples was evaluated in hydroponic experiments with pea (2001, 2002) and lucerne (2001) in which the soil samples were used as a natural inoculum. The high values of PNA were found in the variants fertilised with FYM in all three blocks and all experiments. Simultaneously, the variants fertilised with mineral NPK reached low values of PNA. The farmyard manuring enhanced the number of free-living bacteria Azotobacter spp. that were identified in all soil samples. In the hydroponic experiments with pea, the highest nonsignificant values of TNA were found in variants B 284 (FYM + NPK) and III 254 (FYM + NPK) in 2001, and B 214 (FYM) and III 214 (FYM) in 2002. Plants inoculated with soil from these variants formed also high amounts of nodules (significant differences in block IV in 2001) and plant biomass. In the experiments with lucerne, the nonsignificantly highest TNA values were found in variant III 154 (NPK). Variants from block III (214, 254) and IV (114 and 154) showed the nonsignificantly lowest TNA values. The rhizobia that effectuate symbiosis with pea were more active in the soil samples in 2001 than those forming nodules on lucerne.

scholarly journals Sulphur status in agricultural soils determined using the Mehlich 3 method

2018 ◽  
Vol 64 (No. 6) ◽  
pp. 255-259 ◽  
Author(s):  
Zbíral Jiří ◽  
Smatanová Michaela ◽  
Němec Pavel
Keyword(s):  
Field Experiments ◽  
Agricultural Soils ◽  
Field Trials ◽  
Soil Samples ◽  
Content Category ◽  
Average Decrease ◽  
Archived Samples ◽  
Term Field

Several sets of soil samples were chosen to demonstrate the applicability of the Mehlich 3 extractant for the determination of sulphur (S) in soils. Archived samples from 139 basal soil monitoring plots (BSMS) sampled in 1995 and 2013, samples from eleven long-term field trials sampled in 1981 and 2017, 1167 soil samples from the areas vulnerable to S losses and 720 samples from the non-vulnerable areas sampled in 2010 were chosen for the experiments. Mehlich 3 clearly showed a statistically highly significant decrease in the soil S content caused by reduction of SO<sub>2</sub> emissions in the long-term field experiments from 33 mg/kg in 1981 to 8 mg/kg in 2017 for the median of the untreated controls. Similar results were obtained for BSMS samples, where an average decrease from 26 mg/kg in 1995 to 17 mg/kg in 2013 was found. Mehlich 3 also showed that more than 52% of samples from the areas vulnerable to S losses were in a very low content category in contrast to only 3% of soils from the other areas. Mehlich 3 clearly proved the capacity to distinguish changes in the content of soil S in all studied cases.  

scholarly journals Potassium fractions in soil and simple K balance in long-term fertilising experiments

2020 ◽  
Vol 15 (No. 4) ◽  
pp. 211-219
Author(s):  
Jiří Balík ◽  
Martin Kulhánek ◽  
Jindřich Černý ◽  
Ondřej Sedlář ◽  
Pavel Suran
Keyword(s):  
Sewage Sludge ◽  
Field Experiments ◽  
Spring Barley ◽  
Farmyard Manure ◽  
Climatic Conditions ◽  
Exchangeable K ◽  
Potassium Balance ◽  
Positive Correlations ◽  
Low K

Experiments were used to determine the potassium release from the non-exchangeable K (Kne) forms that are involved in plant nutrition and which replenish the pool of available K. Long-term stationary field experiments with different fertilisation systems (organic: farmyard manure, sewage sludge, straw; mineral: NPK, N) were carried out to study the potassium balance and the K content changes in the topsoil (0–30 cm) and subsoil (30–60 cm). The trials were located at three sites with different soil-climatic conditions. The following crops were rotated within the trial: potatoes (maize) – winter wheat – spring barley. All three crops were grown each year over 21 years. Positive correlations between the contents of the available K in the topsoil and the potassium balance (K inputs – K outputs) were observed. There were no statistically significant differences among the treatments. Depending on the soil properties, the ratio of non-exchangeable K (Kne) was 12–37% of the values obtained via the aqua regia extraction. Depending on the site, the amount released from the Kne forms to the available K form was 46–69 kg K/ha/ year. The use of K from the farmyard manure varied from 7.4% up to 25%. Due to the low K content in the sewage sludge, the long-term fertilisation with sludge may only lead to the depletion of the available K in the soil, similar to the sole N mineral fertilisation.

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