The changes in yield, quality, and soil properties of turfgrass grown by applying varying levels of hazelnut husk compost and irrigating with wastewater in soils with different textures, and their effects on carbon dioxide emissions from the soil

Yerli, Caner; Senol, Nergiz Dila; Yaganoglu, Elif

doi:10.1007/s11270-023-06321-9

Cited by 2 publications

(1 citation statement)

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“…Determining the optimal concentration of N in reclaimed sewage to meet the basic requirements of plants while preventing groundwater contamination and excessive N accumulation in the soil poses a major challenge [12]. Some studies on irrigating turfgrass with reclaimed sewage have primarily focused on the effects on soil physicochemical properties (e.g., soil water, salt, and nutrient status) [13,14], turfgrass growth and quality [15,16], microbial community characteristics [17], and environmental pollution risks [18][19][20]. However, there is very limited knowledge of combining different reclaimed sewage irrigation strategies to evaluate the turfgrass water and N dynamics.…”

Section: Introductionmentioning

confidence: 99%

How to Minimize the Nitrogen Pollution Risk of Applying Reclaimed Sewage for Urban Turfgrass Irrigation

Li,

Zhang,

Liu

et al. 2024

Water

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Reclamation of treated sewage is an important way to alleviate urban water scarcity and optimize ecological layout, especially in irrigating urban turfgrass. Nevertheless, the irrational use of reclaimed sewage could result in risk of excessive nitrogen (N) pollution, which requires a scientific understanding and assessment. This study examined the water-N transport process of the turfgrass system with a HYDRUS-2D model that was accurately calibrated and validated using a set of field experimental data in North China. By integrating 15 scenarios with different irrigation levels and N applications into the model, the turfgrass water flow and N fate characteristics were estimated. The results showed that the adjusted HYDRUS-2D model effectively simulated the volumetric soil water content, drainage water, N leaching, and soil N residual. The temporal variation in turfgrass water loss and N leaching consistently followed that of precipitation and irrigation, with more than 60% of the total drainage water occurring from June to August. The N leaching was at its peak during April and August, and total ammonium-N and nitrate-N leaching was 2.86 and 2.02 kg/hm2, respectively. In simulated scenarios, the turfgrass drainage water was significantly reduced by 26.82% under I60%S1/3-I60%S3 scenarios (I was 100%, 80%, or 60% of total irrigation and S was 1/3, 1/2, 1, 2, or 3 times the experimental sewage concentration), while root water uptake only decreased by 0.85%. Meanwhile, N leaching and soil N residual were significantly reduced by 3.94% and 26.56% under I60%S1/2, respectively. Furthermore, by the TOPSIS entropy weight method, I60%S1/2 was identified as an optimal turfgrass irrigation strategy for the semi-arid region of North China. These results provide a guiding basis for sewage green treatment and urban sustainable irrigation on turfgrass.

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