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Assessment of the influences of climate variability on nitrogen leaching rate into groundwater

Abstract

This article presents preliminary model results of climate change impact on biogeochemical processes in soil. With the use of DNDC (DeNitrification-DeComposition) model, a simulation with climate data over seventy years period (1947-2016) from central part of Slovenia has been carried out. Amongst assessed sources of variability, time variability has been estimated to around 10% of the total annual nitrogen leaching. In some cases, a statistically significant downward trend was observed with a 5 kg reduction in nitrogen per hectare in seventy years period. This study represents the first quantitative assessment of nitrogen leaching variability due to precipitation and air temperature variability in three representative soil profiles in the central Slovenia. It offers a starting point for future regional research for the purpose of farming practice optimization, especially in catchment areas of major regional water resources in Slovenia.

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Influence of Fertilization on Microbial Activities, Soil Hydrophobicity and Mineral Nitrogen Leaching

Abstract

This work presents the analysis of the influence of compost and reclamation substrate addition and mineral fertilizers application on leaching of mineral nitrogen, microbial activities, soil hydrophobicity and plant biomass production. To demonstrate the effect of compost, reclamation substrate and mineral nitrogen (Nmin) addition on above parameters, the pot experiment was performed. As a model crop, Deschampsia caespitosa L. was used and cultivated for 63 days in climate chamber. The leaching of Nmjn was measured by application of ion exchange discs, soil hydrophobicity was determined based on the values of saturated hydraulic conductivity (Ksat) and microbial activity was expressed as basal (BR) and substrate induced respiration (SIR). Four variants (V1-V4) with different doses of fertilizers were prepared: V1 - control without addition of fertilizers; V2 - this variant of experiment was prepared as mixture of compost and arable land in ratio 7:3; V3 - 90 g/m2 of mineral fertilizers NPK (in the ratio 1:1:1) were applied there and into V4, dose 30 g of compost were applied. The significant differences (P < 0.05) in the detection of Nmin, values of Ksat and SIR were found. The highest decrease of mineral nitrogen leaching was observed by the simultaneous applications of compost (V4) to arable soil, about 50% in comparison with the variant V4 (application of mineral fertilization) and about 10% in comparison with the control. Variants with addition of compost (V2 and V4) showed higher values than variants without, which were measured at three stages (before application of Nmin - 12 days after establishment of the experiment; after application of Nmin - 34 days; at end of the experiment - 63 days). During the experiment, two types of respiration were measured: BR and SIR. The significant differences in SIR were found between variants with addition of compost and variants without. The SIR (cumulative production of CO2) was higher about 25% in variants V2 and V4 compared to variants V1 and V3. The highest values of Ksat were found in variants with addition of compost. Conversely, the lowest value of Ksat was detected in variant with addition of Nmin. Low values of Ksat indicate an increased level of hydrophobicity.

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Influence of agricultural utilization of sludge and compost from rural wastewater treatment plant on nitrogen passes in light soil

catchments in Central Germany. Sci. Tot.Environ. 407, 3459-3472. 32. Maeda, M., Zhao, B., Ozaki, Y. & Yoneyama, T. (2003). Nitrate leaching in an Andisol treated with different types of fertilizers. Environ. Pollut. 121(3), 477-487. DOI: dx.doi.org/10.1016. 33. Erhart, E., Feichtinger, F., & Hartl, W. (2007). Nitrogen leaching losses under crops fertilized with biowaste compost compared with mineral fertilization. J. Plant Nutr. Soil Sci., 170(5), 608-614. 34. Czyżyk, F. & Rajmund, A. (2011). Quantity of nitrogen deposited in

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Using Water and Agrochemicals in the Soil, Crop and Vadose Environment (WAVE) Model to Interpret Nitrogen Balance and Soil Water Reserve Under Different Tillage Managements

Hydrology. Vol. 77 p. 145–164. Munoz-Carpena R., Ritter A., Bosch D.D., Schaffer B., Potter T.L. 2008. Summer cover crop impacts on soil percolation and nitrogen leaching from a winter corn field. Agricultural Water Management. Vol. 95 p. 633– 644. Otter-Nacke S., Godwin D.C., Ritchie J.T. 1987. Testing and validating the ceres-wheat model in the diverse environments. Agristars publ. No. Ym-15-00407. Ntis, Springfield, va. pp. 147. Ouedraogo E., Mando A., Brussaard L. 2004. Soil macro-faunal-mediated organic resource disappearance in semi-arid West Africa. Applied

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The use of agricultural soils as a source of nitrous oxide emission in selected communes of Poland

Abstract

Nitrous oxide (N2O) is one of the main greenhouse gases, with a nearly 300 times greater potential to produce a greenhouse effect than carbon dioxide (CO2). Almost 80% of the annual emissions of this gas in Poland come from agriculture, and its main source is the use of agricultural soils. The study attempted to estimate the N2O emission from agricultural soils and to indicate its share in the total greenhouse gas emissions in 48 Polish communes. For this purpose, a simplified solution has been proposed which can be successfully applied by local government areas in order to assess nitrous oxide emissions, as well as to monitor the impact of actions undertaken to limit them. The estimated emission was compared with the results of the baseline greenhouse gas inventory prepared for the needs of the low-carbon economy plans adopted by the studied self-governments. This allowed us to determine the share of N2O emissions from agricultural soils in the total greenhouse gas emissions of the studied communes. The annual N2O emissions from agricultural soils in the studied communes range from 1.21 Mg N2O-N to 93.28 Mg N2O-N, and the cultivation of organic soils is its main source. The use of mineral and natural fertilisers, as well as indirect emissions from nitrogen leaching into groundwater and surface waters, are also significant. The results confirm the need to include greenhouse gas emissions from the use of agricultural soils and other agricultural sources in low-carbon economy plans.

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Effects of Different Irrigation Strategies on Soil Water, Salt, and Nitrate Nitrogen Transport

References [1] Mailhol J, Ruelle P, Nemeth I. Impact of fertilisation practices on nitrogen leaching under irrigation. Irrigation Sci. 2001;20(3):139-147. DOI: 10.1007/s002710100038. [2] Gärdenäs A, Hopmans J, Hanson B, Šimůnek J. Two-dimensional modeling of nitrate leaching for various fertigation scenarios under micro-irrigation. Agr Water Manage. 2005;74(3):219-242. DOI: 10.1016/j.agwat.2004.11.011. [3] Feng ZZ, Wang XK, Feng ZW. Soil N and salinity leaching after the autumn irrigation and its impact on groundwater in Hetao Irrigation

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Nitrogen Transportation and Transformation Under Different Soil Water and Salinity Conditions

Basics to Advances. India: Springer; 2015. 1-14. DOI 10.1007/978-81-322-2169-2_1. [12] Dzurella K, Pettygrove G, Fryjoff-Hung A, Hollander A, Harter T. Potential to assess nitrate leaching vulnerability of irrigated cropland. J Soil Water Conserv. 2015;70(1):63-72. DOI: 10.2489/jswc.70.1.63. [13] Valkama E, Lemola R, Känkänen H, Turtola E. Meta-analysis of the effects of undersown catch crops on nitrogen leaching loss and grain yields in the Nordic countries. Agricult Ecosyst Environ. 2015;203:93-101. DOI: 10.1016/j.agee.2015.01.023. [14] Gilliam J

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Effectiveness of the Application of Nitrification Inhibitors on the Content of Available Nitrogen Forms in the Soil after Winter Barley Cultivation

. Influence of fertilization on microbial activities, soil hydrophobicity and mineral nitrogen leaching. In Ecological Chemistry and Engineering S, vol. 21, no. 4, pp. 661‒675. DOI: https://doi.org/10.1515/eces-2014-0048 FIALA, K. 1999. Binding methods for soil analysis. Partial monitoring system- Soil. Bratislava : VUPOP, 142 p. ISBN 80-85361-55-8 FERNANDEZ-ESCOBAR, R. ‒ GARCÍA-NOVELO, J.M. ‒ RESTREPO-DÍAZ, H. 2011. Mobilization of nitrogen in the olive bearing shoots after foliar application of urea. In Scientia Horticulturae, vol. 127, pp

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The hydrological properties of waterlogged and drained forests in Latvia

-1925. Dambrine E., Ranger J., 2000. Long term nutrient budgets in forests: Lessons from chronosequence studies. In: Forests and society: The role of research. Eds. N. Abdul Rahim H. F. Lim M. Y. Aziah A. R. Mohd Farid. 21st IUFRO World Congr., 7-12 August 2000, Kuala Lumpur, Malaysia. Sub-plenary sessions, 1: 687-694. Dise N. B., Wright R. F., 1995. Nitrogen leaching from European forests in relation to nitrogen deposition. Forest Ecol. Manag. , 71: 153-161. Eichhorn J., Haussmann T., Paar U., Reinds G. J., Vries W., 2001

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Integration of soil and water conservation measures in an intensively cultivated watershed – a case study of Jihlava river basin (Czech Republic)

Snowmelt and Rainfall - Runoff Events in a Small Agricultural Catchment. CLEAN - Soil, Air, Water, 40(2), 154-163. Doi: 10.1002/clen.201100248. [7] Gilbert, N. (2015). Europe sounds alarm over freshwater pollution. Nature, 02 March 2015. Doi: 10.1038/nature.2015.17021. [8] Haberle, J. & Káš, M. (2012). Simulation of nitrogen leaching and nitrate concentration in a long-term field experiment. Journal of Central European Agriculture, 13(3), 416-425. Doi: 10.5513/jcea.v13i3.1533. [9] Janeček, M. et al. (2012). Ochrana

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