Autor: Šimanský, V. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: How Does Biochar and Biochar With Nitrogen Fertilization Influence Soil Reaction?
Autorzy:: Šimanský, V.
Klimaj, A.
Powiązania:: https://bibliotekanauki.pl/articles/125285.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: biochar
soil pH
neutralizing effect
N fertilization
Opis:: Biochar usually has a neutralizing effect, therefore, it is recommended for application to acid soils due to its potential to increase soil pH. The aims of this study were (1.) to quantify the role of different rates of biochar and biochar in combination with N fertilization on change of soil pH, and (2.) to evaluate the dynamic changes of soil pH in relation with doses of biochar and biochar with N fertilization. A field experiment was conducted with different biochar application rates: B0 control (0 t ha^-1), B10 (10 t ha^-1) and B20 (20 t ha^-1) and 0, 40 and 80 kg N ha^–1 of nitrogen fertilizer (N0, N40, N80) on silt loam Haplic Luvisol at the locality of Dolná Malanta (Slovakia) in 2014. Their effects were investigated after vegetation season of spring barley and spring wheat (once a month: from April to July) in 2014 and 2016, respectively. Experimental results indicate that the soil pHH₂O in B0N0, B10N0, B20N0, B10N40, B20N40, B10N80 and B20N80 were 6.23, 6.45, 6.60, 6.77, 6.48, 6.36 and 6.60, respectively. The results of LSD test showed statistically significant differences between soil pH in control treatment and treatments with biochar and biochar with N fertilization. The most significant effect on increase of soil pH was observed in B10N40. During whole period, after application of biochar and biochar with N fertilization the values of pHKCl were gradually decreased in all treatments.
Źródło:: Journal of Ecological Engineering; 2017, 18, 5; 50-54
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Effect of Different Doses of N Fertilization on the Parameters of Soil Organic Matter and Soil Sorption Complex
Autorzy:: Šimanský, V.
Kováčik, P.
Jonczak, J.
Powiązania:: https://bibliotekanauki.pl/articles/124019.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: nitrogen
fertilization
Luvisol
soil organic matter
hydrolytic acidity
cation exchange capacity
Opis:: Mineral N fertilizer application may have an effect on soil organic matter and other soil parameters. Therefore, we studied the effects of different doses of N fertilization on soil organic matter and chemical properties of Haplic Luvisol in the locality of Dolná Malanta (Slovakia) during 2014–2016. Soil samples were collected from the plots exposed to the following treatments: 1. N0 – no N fertilization as control during 2014–2016, 2. N40 – N fertilizer at the rate of 40 kg N ha^–1 in 2014 and 2016, 3. N80 – N fertilizer at the rate of 80 kg N ha^–1 in 2014 and 2016, 4. N160 – N fertilizer at the rate of 160 kg N ha^–1 in 2015, and 5. N240 – N fertilizer at the rate of 240 kg N ha^–1 in 2015. The results showed that in N80 the soil organic carbon (SOC) content increased by 32% in comparison to N0. The addition of 80 kg ha^-1 of N significantly decreased the humic substances (HS) content in the soil by 16% compared to N0. The higher doses of N fertilization 80 rather than 40 kg ha^-1 as well as 240 rather than 160 kg ha^-1 significantly decreased humus stability. The addition of N fertilization decreased the average values of soil pH. Values of hydrolytic acidity (Ha) increased by 41% and 46% in N40 and N80, respectively than N0, but on the other hand, this one decreased by 36% and 27% in N160 and N240, respectively in comparison to N0. Positive statistically significant correlations were determined between soil pH and SOC in N40 and N80 treatments. The increase of soil pH was connected with higher humus quality in N160 and N240. Negative correlations between humic acids (HA) and sum of basic cations (SBC) and cation exchange capacity (CEC) were observed in N80 < N160 < N240 treatments. Higher values of fulvic acids corresponded with lesser CEC in N80 and N160 treatments. In N160, with increased humus quality, CEC significantly decreased. The same effect was observed in N240. In addition, in N240, we also observed that with increased HA:FA ratio SBC and base saturation significantly decreased.
Źródło:: Journal of Ecological Engineering; 2017, 18, 3; 104-111
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Impact of Vermicompost Extract Application Into Soil and on Plant Leaves on Maize Phytomass Formation
Autorzy:: Kováčik, P.
Renčo, M.
Šimanský, V.
Hanáčková, E.
Wiśniowska-Kielian, B.
Powiązania:: https://bibliotekanauki.pl/articles/124045.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: vermicompost
vermi extract
foliar application
maize
Opis:: Nowadays in scientific literature many opposing data are presented of the impacts of vermicompost extract on the quantity and quality of crop production. Therefore, the principal objective of two independent experiments was to study the effects of vermi extracts, which were applied before maize sowing into soil and during the growing season on the maize leaves, on its phytomass formation. The first, field experiment consisted of 9 variants. Variant 1 was the control one without the extract application. We studied the effect of the rising doses (90, 130, 170, 210 dm³.·ha^-1) of vermi-extract applied into soil before the maize sowing in the variants E₁, E₂, E₃, E₄. In the variants E₁+E, E₂+E, ₃+E, E₄+E along with the rising doses of vermi-extract was also applied the uniform dose of vermi-extract (40 dm³·ha^-1) at the growth stage BBCH 15. The second, pot experiment was pursued in the vegetation cage and comprised 3 variants: variant 1 was the control, in the variants 2 and 3 the foliar application of vermi-extract was used. The vermi-extract was applied once (growth stage BBCH 12) in the variant 2 and in the variant 3 it was used twice (at growth stages BBCH 12 and BBCH 16). The achieved results show that the vermi-extract applied in the presowing period in-creased the yield of maize grains if the application doses were 130–170 dm³·ha^-1. The positive or negative impact of the foliar application by vermi-extract on the yield of maize grains depended on the period of application and the grown cultivar. In order to increase the starch content in grains it was more suitable to carry out the presowing ver-miextract application than during the growing season. The presowing application and the foliar application of vermi-extract tended to decrease the nitrogen content in grain. The foliar application of vermi-extract had the positive impact on the plant height and stalk thickness of the maize plants only in short term. The information obtained from the first half of maize growing season related to the plant height and stalk thickness was not the appropriate indicator for the assessment of maize grain yields.
Źródło:: Journal of Ecological Engineering; 2015, 16, 4; 143-153
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The Effect of Different Rates of Biochar and Biochar in Combination with N Fertilizer on the Parameters of Soil Organic Matter and Soil Structure
Autorzy:: Juriga, M.
Šimanský, V.
Horák, J.
Kondrlová, E.
Igaz, D.
Polláková, N.
Buchkina, N.
Balashov, E.
Powiązania:: https://bibliotekanauki.pl/articles/125202.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: biochar
soil organic matter
soil structure
nitrogen fertilizer
Opis:: Since biochar is considered to be a significant source of carbon, in this work we have evaluated the changes in soil organic matter (SOM) and soil structure due to application of biochar and biochar with N fertilization, and have considered the interrelationships between the SOM parameters and the soil structure. The soil samples were collected from Haplic Luvisol at the locality of Dolná Malanta (Slovakia) during 2017. The field experiment included three rates of biochar application (B0 – no biochar, B10 – biochar at the rate of 10 t ha^-1, B20 – biochar at the rate of 20 t ha^-1) and three levels of N fertilization (N0 – no nitrogen, N160 – nitrogen at the rate of 160 kg ha^-1, N240 – nitrogen at the rate of 240 kg ha^-1). The rate of biochar at 20 t ha^-1 caused an increase in the organic carbon (C_org) content. The combination of both rates of biochar with 160 and 240 kg N ha^-1 also caused an increase in C_org. In the case of B20 the extractability of humic substances carbon (C_HS) was 17.79% lower than at B0. A significant drop was also observed in the values of the extraction of humic acids carbon (C_HA) and fulvic acids carbon (C_FA) after the addition of biochar at a dose of 20 t ha^-1 with 160 kg N ha^-1. However, both rates of biochar had a significant effect at 240 kg N ha^-1. After application of 20 t ha^-1 of biochar the content of water-stable macro-aggregates (WSA_ma) significantly increased compared to control. This rate of biochar also increased the mean weight diameter (MWD_W) and the index of water-stable aggregates (Sw) and decreased the coefficient of vulnerability (Kv). The biochar at a rate of 20 t ha^-1 with 240 kg N ha^-1 the value of MWD_W increased and value of Kv decreased significantly. The contents of C_org and C_L correlated positively with WSA_ma, MWD_W and Sw and negatively with WSA_mi and Kv. The extraction of C_HA and C_FA was in negative relationship with MWD_W. We conclude that the application of biochar and biochar combined with N fertilizer had a positive influence on SOM and soil structure.
Źródło:: Journal of Ecological Engineering; 2018, 19, 6; 153-161
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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