Evaluation of fertigation management impacts of surface drip irrigation on reducing nitrate leaching using numerical modeling

Azad, Nasrin; Behmanesh, Javad; Rezaverdinejad, Vahid; Abbasi, Fariborz; Navabian, Maryam

doi:10.1007/s11356-019-06699-2

Cited by 24 publications

(8 citation statements)

References 54 publications

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“…NH 4 -N transport was limited in the soil profile since NH 4 -N tends to adsorb to the solid phase of the soil (Azad et al, 2019). The simulation results showed a negligible leached NH 4 -N amount.…”

Section: Water-deep Percolation and No 3 -N Leachingmentioning

confidence: 93%

“…Moreover, the consideration of several solute parameters in the inverse solution to calibrate HYDRUS-1D in this study might contribute to the increase in the RMSE and MAE values. For example, the optimized solute parameters showed constant D L values across the entire soil profile, even though this solute parameter is affected by several factors, including soil texture, soil heterogeneity, and water flow rates (Gelhar et al 1992;Hanson et al 2006;Phogat et al 2014;Azad et al 2019).…”

Section: Tablementioning

confidence: 99%

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Simulation of soil water and nitrate transport in wheat field under various nitrogen fertilizer rates and rainfed conditions using HYDRUS-1D

Lahjouj¹,

Hmaidi²,

M'hamed³

et al. 2023

Soil Sci. Ann.

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In this study, we used HYDRUS-1D software to simulate soil water and nitrate (NO 3 -N) transport in a rainfed wheat fi eld under various nitrogen (N) fertilizer scenarios (0 to 126 kg ha -1 ) in Morocco. We used inverse modeling to calibrate the input parameters involved in the simulation. The comparison between simulated and measured soil water (SWC) and NO 3 -N contents at different soil layers was carried out using the index of agreement (d), determination coeffi cient (R 2 ), RMSE, and MAE. By considering the soil profi le (0-100 cm), acceptable SWC simulation accuracies were obtained for the calibration and validation steps (d=0.88-0.94, R 2 =0.67 to 0.80, RMSE=0.034-0.051 cm 3 cm -3 , and MAE=0.024-0.038 cm 3 cm -3 ), while NO 3 -N simulation was less accurate (d=0.49-0.82, R 2 =0.20-0.58, RMSE=0.015-0.068 mg cm -3 , and MAE=0.012-0.046 mg cm -3 ). In addition, the observed NO 3 -N contents showed a lack of signifi cant differences in the root zone (20-100 cm) between N fertilizer rates (p>0.05), which was consistent with the lack of N fertilizer effects on simulated NO 3 -N leaching below the soil profi le by HYDRUS-1D. The NO 3 -N leached amount accounted for 25 kg ha -1 and was derived mainly from the initial soil N contents. The simulated N balance of the soil profi le revealed that volatilization and denitrifi cation were the major pathways of N fertilizer loss, accounting for about 3.8 and 51.7% of the N fertilizer rates, respectively. We suggest further studies to improve the simulation accuracies of HYDRUS-1D using suffi cient calibration data from long-term wheat experiments to ensure effective N fertilization management in the study area.

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Section: Water-deep Percolation and No 3 -N Leachingmentioning

confidence: 93%

Section: Tablementioning

confidence: 99%

Simulation of soil water and nitrate transport in wheat field under various nitrogen fertilizer rates and rainfed conditions using HYDRUS-1D

Lahjouj¹,

Hmaidi²,

M'hamed³

et al. 2023

Soil Sci. Ann.

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“…There are some other factors which are also involved in nitrate leaching. Irrigation amount and its distribution is responsible for nitrate leaching below plant root zone in the soil profile [30]. Soil structure may also affect movement of nitrate within the soil profile [31].…”

Section: Introductionmentioning

confidence: 99%

Influence of Sewage Sludge and Heavy Fertilization on Nitrate Leaching in Soils: An Overview

Sohail¹,

Ali²,

Zulfiqar³

et al. 2024

Environmental Sciences

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Sewage sludge is now widely used for production of crops throughout the world. Utilizing the sewage sludge for crop production has various advantages such as nutrient recycling, reducing the need for mineral fertilizer, increasing organic matter amount in soils, and improving physical properties of soil. A large amount of sludge is generated during the sewage treatment process, and it is disposed off on land in the form of fertilizer or soil conditioner. In this, heavy metals are usually in greater concentration than in soil, which is one of the main problems which restricts its utilization as a fertilizer. Nitrate leaching and heavy fertilization cause serious problems for the groundwater and this issue of nitrate leaching is usually neglected. Continuous used of swage sludge cause contamination of soil and water and affects plant growth and soil microorganisms. In this chapter, we have focused on i) various factors which affects nitrate leaching in soil, it includes soil texture, rate of fertilization, season and climate, ii) strategies to reduce nitrate leaching and iii) nitrogen conversion mechanism in sewage sludge.

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“…After urea is applied to the soil, it is hydrolyzed to ammonium (NH 4 + ) and then quickly converted to nitrate (NO 3 – ). Heavy rainfall often causes a large amount of NO 3 – leaching into the deep soil layer, which leads to insufficient N to meet the maize demand in the late season ( Azad et al, 2019 ; Fernandez et al, 2020 ). In order to reduce N loss as much as possible, some technologies, such as the application of controlled-release N fertilizer, improve NUE by controlling the release time of N ( Fan et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Influences of split application and nitrification inhibitor on nitrogen losses, grain yield, and net income for summer maize production

Ren

Zhao

et al. 2022

Front. Plant Sci.

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The application of nitrogen (N) fertilizer combined with nitrification inhibitor is considered to be one of the effective strategies to improve N efficiency and reduce N loss. While the chemical and physical properties of nitrapyrin (CP) in fertilizers have been evaluated to increase N efficiency, a lack of comprehensive evaluation of the effects of adding CP on summer maize yield, environmental benefits and economic income under different fertilization methods. In this study, two fertilization methods were used: split-N application and one-time basal N fertilizer before sowing. The comprehensive effects of N fertilizer with CP on N loss (NH3 volatilization, NO3– leaching, and N2O emissions), N efficiency, yield and profit under two N application methods were explored. Results showed that under the two N application methods, N fertilizer with CP treatment increased the N efficiency and yield (+3.4%∼+5.7%), significantly reduced the soil NO3–-N content and N2O emissions, while increased NH3 volatilization. Especially, the increase amplitude of NH3 was much less than the decrease amplitude of N2O induced by adding CP. Although split-N application could achieve higher yield and N efficiency, N2O emissions and NH3 volatilization also increased. However, the T1 + N (one-time basal N fertilizer before sowing mixed with CP) achieved the same yield level as T2 treatment (split-N application). Taking agronomic, economic and environmental benefits into consideration, one-time basal N fertilizer before sowing mixed with CP could ensure the target yield, increase economic benefits, maintain soil N content, and reduce N losses. Therefore, optimizing N management is essential to the sustainable development of agriculture.

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Evaluation of fertigation management impacts of surface drip irrigation on reducing nitrate leaching using numerical modeling

Cited by 24 publications

References 54 publications

Simulation of soil water and nitrate transport in wheat field under various nitrogen fertilizer rates and rainfed conditions using HYDRUS-1D

Simulation of soil water and nitrate transport in wheat field under various nitrogen fertilizer rates and rainfed conditions using HYDRUS-1D

Influence of Sewage Sludge and Heavy Fertilization on Nitrate Leaching in Soils: An Overview

Influences of split application and nitrification inhibitor on nitrogen losses, grain yield, and net income for summer maize production

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