The Potential of Pig Sludge Fertilizer for Some Pasture Agricultural Lands’ Improvement: Case Study in Timiș County, Romania

Bertici, R.; Dicu, D.; Herbei, Mihai Valentin; Sala, F.

doi:10.3390/agronomy12030701

Cited by 3 publications

(2 citation statements)

References 38 publications

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“…Based on the spectral information from the satellite images, four representative indices were calculated in relation to the purpose of the study: MSAVI (Qi et al, 1994), relation (1); NDMI (Wilson and Sader, 2002;Skakun et al, 2003), relation (2); NDVI (Rouse et al, 1974), relation (3); NBR (Key and Benson, 2005), relation (4).…”

Section: Methodsmentioning

confidence: 99%

Characterization of Vegetation and Prediction of Biomass Production in Silage Corn Crop Based on Satellite Images

Herbei¹,

POPESCU²,

Sala³

2022

LSSD

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The study used methods based on remote sensing to analyze the dynamics of a silage corn crop and predict biomass production. The corn crop, the Micado hybrid, was organized within the Didactic and Experimental Station of the "King Mihai I" University of Life Sciences in Timisoara, under the specific conditions of the 2021-2022 agricultural year. The soil in the crop plot was of chernozem type, and the crop was in a non-irrigated system. To obtain the satellite data, the Sentinel 2 system was used. To characterize the plot and the crop of silage corn, 14 sets of images were taken, in the interval March - July 2022. From the analysis of the images, the spectral data were obtained, and based on the consecrated formulas MSAVI, NDMI, NDVI and NBR indexes were calculated. The ANOVA test confirmed the reliability of the data and the presence of variance in the data set (F>Fcrit, p<0.001, for Alpha=0.001). The level of correlations identified between the calculated indices was between r=0.967 (NBR with NDVI) and r=0.996 (NDVI with MSAVI). The variation of the NBR index, in relation to the other indices, was described by linear equations, in terms of statistical safety (R2=0.965, p<0.001, in relation to MSAVI; R2=0.989, p<0.001 in relation to NDMI; R2=0.934, p<0.001 in relation to NDVI). The variation of indices in relation to time (t, days) during the study period was described by polynomial equations of the 3rd degree, in terms of statistical safety (R2=0.964 for MSAVI, R2=0.934 for NDMI, R2=0.941 for NDVI, and R2=0.961 for NBR). Regression analysis facilitated obtaining some equations, as models for predicting biomass production, under conditions of statistical safety. Based on the RMSEP parameter, it was found that the most reliable level of production prediction was obtained in the case of MSAVI and NDMI indices (RMSEP=0.05923).

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Section: Methodsmentioning

confidence: 99%

Characterization of Vegetation and Prediction of Biomass Production in Silage Corn Crop Based on Satellite Images

Herbei¹,

POPESCU²,

Sala³

2022

LSSD

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“…SS has been applied as a fertilizer to woodlands, representing a sustainable and effective treatment for recycling the abundant organic matter and nutrients in SS 5 – 8 . As most forest products do not directly enter the human food chain, SS can be applied to forest land to enhance soil fertility and tree growth.…”

Section: Introductionmentioning

confidence: 99%

Effects of woodland slope on heavy metal migration via surface runoff, interflow, and sediments in sewage sludge application

Xian,

Lu,

Yang

et al. 2024

Sci Rep

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Sewage sludge (SS) application to forest plantation soils as a fertilizer and/or soil amendment is increasingly adopted in plantation forest management. However, the potential risks of SS-derived heavy metals (HMs) remain a concern. Many factors, including woodland slope may affect the risks, but the understanding of this issue is limited. This research evaluated the HMs migration via surface runoff, interflow, and sediments when SS was applied in woodlands of varying slopes. We conducted indoor rainfall simulations and natural rainfall experiments to clarify the effect of slope on the migration of HMs via runoff (including surface and interflow) and sediments. In the simulated rainfall experiment, HMs lost via sediments increased by 9.79–27.28% when the slope increased from 5° to 25°. However, in the natural rainfall experiment, when the slope of forested land increased from 7° to 23°, HMs lost via surface runoff increased by 2.38% to 6.13%. These results indciate that the surface runoff water on a high slope (25°) posed high water quality pollution risks. The migration of HMs via surface runoff water or interflow increased as the steepness of the slope increased. The total migration of Cu, Zn, Pb, Ni, Cr and Cd via sediment greatly exceeded that via surface runoff and interflow. Particles ≤ 0.05 mm contributed the most to the ecological risks posed by sediments. Cd was the main source of potential ecological risks in sediments under both experimental conditions.

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Effects of woodland slope on heavy metal migration via surface runoff, interflow, and sediments and associated potential ecological risks following the application of sewage sludge

Xian,

Lu,

Yang

et al. 2024

Preprint

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The application of sewage sludge (SS) to woodland is an effective approach for the disposal and utilization of SS. However, the woodland slope may determine the risk of heavy metal (HM) migration via runoff. We conducted indoor rainfall simulations and natural rainfall experiments to clarify the effect of slope on the migration of HMs via runoff (including surface and interflow) and sediments. In the simulated rainfall experiment, HMs lost via sediments increased by 9.79–27.28% when the slope increased from 5° to 25°. However, in the natural rainfall experiment, when the slope of forested land increased from 7° to 23°, HMs lost via surface runoff increased by 2.38% to 6.13%. It revealed that the surface runoff water on a high slope (25°) posed high water quality pollution risks. The migration of HMs via surface runoff water or interflow increased as the steepness of the slope increased. The total migration of Cu, Zn, Pb, Ni, Cr and Cd via sediment greatly exceeded that via surface runoff and interflow. Particles ≤0.05 mm contributed the most to the ecological risks posed by sediments. Cd was the main source of potential ecological risks in sediments under both experimental conditions.

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The Potential of Pig Sludge Fertilizer for Some Pasture Agricultural Lands’ Improvement: Case Study in Timiș County, Romania

Cited by 3 publications

References 38 publications

Characterization of Vegetation and Prediction of Biomass Production in Silage Corn Crop Based on Satellite Images

Characterization of Vegetation and Prediction of Biomass Production in Silage Corn Crop Based on Satellite Images

Effects of woodland slope on heavy metal migration via surface runoff, interflow, and sediments in sewage sludge application

Effects of woodland slope on heavy metal migration via surface runoff, interflow, and sediments and associated potential ecological risks following the application of sewage sludge

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