Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.3389/fsoil.2024.1345073
Lizenz creative commons licence
Titel (primär) The influence of increasing mineral fertilizer application on nitrogen leaching of arable land and grassland - results of a long-term lysimeter study
Autor Rupp, H.; Tauchnitz, N.; Meissner, R.
Quelle Frontiers in Soil Science
Erscheinungsjahr 2024
Department BOSYS
Band/Volume 4
Seite von art. 1345073
Sprache englisch
Topic T5 Future Landscapes
Supplements https://www.frontiersin.org/articles/10.3389/fsoil.2024.1345073/full#hsm
Keywords Lysimeter; Nitrogen leaching; seepage; Mineral fertilization; land use
Abstract Despite various efforts to reduce nitrogen leaching from agricultural land, the permissible nitrate concentrations in groundwater have often been exceeded. Intensive farming is often seen as the cause of the deterioration in water quality. Therefore, the present lysimeter study aimed to quantify nitrogen (N) leaching at different N fertilization levels for the agricultural land use systems of arable land and grassland to derive suitable management measures for improving groundwater quality.The effects of three different mineral fertilization treatments (50%, 100%, and 150%) in arable land and grassland use on four distinct soil types (loamy sand, sand, loam, loess) concerning seepage formation, nitrogen concentrations, nitrogen loads, dry matter yields and nitrogen balances were tested. The study was conducted at the lysimeter facility of the Helmholtz Centre of Environmental Research – UFZ at Falkenberg (northeast Germany). Twenty-four non-weighable lysimeters with a surface area of 1 m² and a depth of 1.25 m were managed as grassland and arable land with three different fertilization treatments since 1985.
For arable land use, N leaching differed between the studied soil types, with the highest N loads from the sand (36.6 kg ha -1 yr -1 ) and loamy sand (30.7 kg ha -1 yr -1 ) and the lowest N loads from loess (12.1 kg ha -1 yr -1 ) and loam soil (13.1 kg ha -1 yr -1 ). In contrast to grassland use, a reduction of N fertilization level by 50 % did not result in reduced N leaching for arable land, whereas a maximal 29% reduced dry matter yields was observed. An increase of N fertilization by 50 % did not cause significant enhanced N leaching at arable land use. Soil and management-related factors (soil type, texture, soil tillage, crop rotation, and others) mask the effect of increased N fertilization rates in arable land using lysimeters. For arable land use, a reduction of N fertilizer levels as the only measure was insufficient to reduce NO3 -leaching, and other strategies besides N fertilization levels are required to improve groundwater quality. Measures should be targeted to reduce N losses by mineralization processes.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=28796
Rupp, H., Tauchnitz, N., Meissner, R. (2024):
The influence of increasing mineral fertilizer application on nitrogen leaching of arable land and grassland - results of a long-term lysimeter study
Front. Soil Sci. 4 , art. 1345073 10.3389/fsoil.2024.1345073