Effect of grassland harvesting frequency and N-fertilization on stocks and dynamics of soil organic matter in the temperate climate

Nüsse, Anja; Linsler, Deborah; Loges, Ralf; Reinsch, Thorsten; Taube, F.; Ludwig, Bernard

doi:10.1080/03650340.2018.1468561

Cited by 9 publications

(14 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surprisingly, plants used slurry N at very low efficiency, so that the high plant N demand was largely met by mineralization of SON rather than recently applied fertilizer N. Since refueling of SON stocks by fertilizer addition was also inefficient due to high slurry N losses, N balances were negative, thereby indicating soil N mining in all climate and management treatments. The high productivity observed in this study (7.5-11.6 t ha −1 yr −1 ) is in line with studies conducted in other temperate grasslands, which reported yields ranging from 5.5 to 14.5 t ha −1 yr −1 [42][43][44].…”

Section: 1n Cycling In Montane Grassland Soilsupporting

confidence: 92%

Management Intensity Controls Nitrogen-Use-Efficiency and Flows in Grasslands—A 15N Tracing Experiment

et al. 2020

View full text Add to dashboard Cite

The consequences of land use intensification and climate warming on productivity, fates of fertilizer nitrogen (N) and the overall soil N balance of montane grasslands remain poorly understood. Here, we report findings of a 15N slurry-tracing experiment on large grassland plant–soil lysimeters exposed to different management intensities (extensive vs. intensive) and climates (control; translocation: +2 °C, reduced precipitation). Surface-applied cattle slurry was enriched with both 15NH4+ and 15N-urea in order to trace its fate in the plant–soil system. Recovery of 15N tracer in plants was low (7–17%), while it was considerably higher in the soil N pool (32–42%), indicating N stabilization in soil organic nitrogen (SON). Total 15N recovery was only 49% ± 7% indicating substantial fertilizer N losses to the environment. With harvest N exports exceeding N fertilization rates, the N balance was negative for all climate and management treatments. Intensive management had an increased deficit relative to extensive management. In contrast, simulated climate change had no significant effects on the grassland N balance. These results suggest a risk of soil N mining in montane grasslands under land use intensification based on broadcast liquid slurry application.

show abstract

Section: 1n Cycling In Montane Grassland Soilsupporting

confidence: 92%

Management Intensity Controls Nitrogen-Use-Efficiency and Flows in Grasslands—A 15N Tracing Experiment

et al. 2020

View full text Add to dashboard Cite

show abstract

“…In comparison to the already high Bavarian average of 33.9 mg g −1 SOC and 3.5 mg g −1 TN in the A horizon of grassland soils (Wiesmeier et al 2013), the here investigated soil showed even higher SOC and TN concentrations (150 mg g −1 and 16 mg g −1 , respectively). Even at up to several fold lower SOC and TN concentrations compared to those of this study, temperate grasslands were shown to be productive systems with yields of 5.5 to 14.5 t ha −1 yr −1 (Ammann et al 2007;Hoekstra et al 2010;Nüsse et al 2018). Interestingly, in our study biomass yield rather than plant N concentration was the dominating control for N-export.…”

Section: Nitrogen Pools and Flows In Montane Grassland Ecosystemscontrasting

confidence: 53%

Intensive slurry management and climate change promote nitrogen mining from organic matter-rich montane grassland soils

et al. 2020

View full text Add to dashboard Cite

Aims Consequences of climate change and land use intensification on the nitrogen (N) cycle of organic-matter rich grassland soils in the alpine region remain poorly understood. We aimed to identify fates of fertilizer N and to determine the overall N balance of an organic-matter rich grassland in the European alpine region as influenced by intensified management and warming. Methods We combined 15N cattle slurry labelling with a space for time climate change experiment, which was based on translocation of intact plant-soil mesocosms down an elevational gradient to induce warming of +1 °C and + 3 °C. Mesocosms were subject to either extensive or intensive management. The fate of slurry-N was traced in the plant-soil system. Results Grassland productivity was very high (8.2 t - 19.4 t dm ha−1 yr−1), recovery of slurry 15N in mowed plant biomass was, however, low (9.6–14.7%), illustrating low fertilizer N use efficiency and high supply of plant available N via mineralization of soil organic matter (SOM). Higher 15N recovery rates (20.2–31.8%) were found in the soil N pool, dominated by recovery in unextractable N. Total 15N recovery was approximately half of the applied tracer, indicating substantial loss to the environment. Overall, high N export by harvest (107–360 kg N ha−1 yr−1) markedly exceeded N inputs, leading to a negative grassland N balance. Conclusions Here provided results suggests a risk of soil N mining in montane grasslands, which increases both under climate change and land use intensification.

show abstract

“…For instance, the highest above ground biomass is obtained in three times cutting regimes compared to five times cutting regimes (Nüsse et al, 2018) due to recovery interval after each cut, although vegetation types response to mowing differently (Liang et al, 2019).…”

Section: Grassland Yield Responses To Soil Attribute Changesmentioning

confidence: 99%

“…Soil moisture reduction would consequently feedback into plant production due to the importance of soil water content in plant growth (Chai et al., 2019). For instance, the highest above ground biomass is obtained in three times cutting regimes compared to five times cutting regimes (Nüsse et al., 2018) due to recovery interval after each cut, although vegetation types response to mowing differently (Liang et al., 2019). This may be due to less mowing‐induced damages in low intensity management systems below the threshold level which decrease the vegetation yield (Rakkar & Blanco‐Canqui, 2018).…”

Section: Grassland Management Effects On Vegetationmentioning

confidence: 99%

“…Long‐term excessive defoliation in meadows leads to a decrease in herbage productivity due to the greater nutrient depletion of the soil, which is probably caused by an increased export of harvestable nutrients in high defoliation intensity (Li et al., 2017; Nüsse et al., 2018). Furthermore, because of reduced sward vitality under high mowing frequency, the proportion of bare soil increases, resulting in a greater reduction in soil moisture.…”

Section: Grassland Management Effects On Vegetationmentioning

confidence: 99%

See 1 more Smart Citation

How does grassland management affect physical and biochemical properties of temperate grassland soils? A review study

Mayel

Jarrah

Kuka

2021

Grass and Forage Science

View full text Add to dashboard Cite

Temperate grasslands occupy 9 million km 2 , representing 8% of earth's terrestrial surface (Figure 1) (Sala et al., 2013;White et al., 2000). Most permanent grasslands are land-use systems established by humans over centuries and therefore a part of our cultural landscape (Hejcman et al., 2013). Grasslands occur most commonly where site-specific conditions are less favourable for crop farming, while primarily found on marginal land. Grassland herbaceous plant communities evolved in close relation with herbivores and are adapted to defoliation. Defoliation is defined as removing plant shoots by grazing or mowing, and it is described in terms of intensity, interval between events, timing relative to season or plant growth stage, or by its spatial heterogeneity (Sollenberger

show abstract

Effect of grassland harvesting frequency and N-fertilization on stocks and dynamics of soil organic matter in the temperate climate

Cited by 9 publications

References 23 publications

Management Intensity Controls Nitrogen-Use-Efficiency and Flows in Grasslands—A 15N Tracing Experiment

Management Intensity Controls Nitrogen-Use-Efficiency and Flows in Grasslands—A 15N Tracing Experiment

Intensive slurry management and climate change promote nitrogen mining from organic matter-rich montane grassland soils

How does grassland management affect physical and biochemical properties of temperate grassland soils? A review study

Contact Info

Product

Resources

About