Evaluating soil nitrate dynamics in an intercropping dripped ecosystem using HYDRUS-2D

Chen, Ning; Li, Xianyue; Šimůnek, Jiřı́; Shi, Haibin; Hu, Qi; Zhang, Yuehong

doi:10.1016/j.scitotenv.2020.137314

Cited by 35 publications

(17 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the soil field is characterized by high initial N contents and fine soil texture, the denitrification pathway could, therefore, be substantially strengthened during the simulation. According to the simulation results, most soil NH 4 -N (about 92% of the total NH 4 -N content) was rapidly nitrified within a few days, which is consistent with the findings reported by Berlin et al (2015), Eltarabily et al (2019), Madathil et al (2019), and Chen et al (2020. Therefore, the high nitrification rate of NH 4 -N could increase the NO 3 -N contents in the soil profile and, consequently, enhance the denitrification pathway without necessarily requiring waterlogging conditions, which is consistent with the results of Johnson and Raun (1995) and Forte and Fierro (2019).…”

Section: Measured Wheat Yield and Nitrogen Balancesupporting

confidence: 90%

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.

View full text Add to dashboard Cite

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.

show abstract

Section: Measured Wheat Yield and Nitrogen Balancesupporting

confidence: 90%

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.

View full text Add to dashboard Cite

show abstract

“…Wang and Xing [46] found a negative correlation between N use efficiency and levels of N fertilizer application, showing that the N recovery efficiency decreased with the increase in N fertilizer. Nevertheless, the results obtained by Cheng et al [47] in tomato plants cultivated in soil must be considered. They applied high (250 kg ha −1 ), middle (175 kg ha −1 ) and low (125 kg ha −1 ) levels of N-fertilizer and found NUE values of 0.49-0.55, 0.51-0.59 and 0.46-0.51, respectively.…”

Section: Discussionmentioning

confidence: 99%

Fertigation Strategies to Alleviate Fertilizer Contamination Generated by Tomato Crops under Plastic Greenhouses

2021

View full text Add to dashboard Cite

The rapid development of greenhouse horticulture has brought about a dramatic increase in the nitrate pollution of aquifers. The optimization of nitrogen application is an important tool to minimize nitrogen losses. The objective of this research was to assess the effect of different fertigation strategies, based on the reduction of the nitrogen applied and the use of a percentage of NH4+ as a nitrogen source, on the decrease in the environmental impact caused by the traditional system, as well as to evaluate if this is compatible with a high fruit yield (considering quantity and quality). Lycopersicum esculentum Mill cv. Forteza plants were grown in a polyethylene greenhouse. Tomato yield and quality were evaluated, along with leachates, which were collected by means of rigid plastic lysimeters. The proposed strategies did not reduce fruit yield. However, the reduction in the nitrate applied caused firmness and °Brix decrease, together with a diminution in titratable acidity until 124 days after transplanting. Nevertheless, these effects were not observed with the replacement of some of the NO3− by NH4+. The reduction in fertilizer inputs significantly improved water and nutrient (N, P and K) use efficiency. The treatment with NH4+ improved K use efficiency, compared to the conventional treatment, but P decreased. The highest NO3− and K leaching was detected in the traditional treatment.

show abstract

“…8 Global sensitivity analysis for the land equivalent ratio and the transgressive overyielding index. The highlighted area represents the nitrogen input level for which transgressive overyielding occurs (i.e., TOI > 1) mass flow and diffusion of soil mineral nitrogen (Chen et al 2020). Also, the validation of such a model would require measurements of horizontal and lateral root distributions of both species (Chen et al 2017;Gao et al 2010;Li et al 2017;Streit et al 2019;, which are laborious to collect.…”

Section: Discussionmentioning

confidence: 99%

Identification of species traits enhancing yield in wheat-faba bean intercropping: development and sensitivity analysis of a minimalist mixture model

et al. 2020

View full text Add to dashboard Cite

Aim Cereal-legume intercropping can result in yield gains compared to monocrops. We aim to identify the combination of crop traits and management practices that confer a yield advantage in strip intercropping. Methods We developed a novel, parameter-sparse process-based crop growth model (Minimalist Mixture Model, M3) that can simulate strip intercrops under well-watered but nitrogen limited growth conditions. It was calibrated and validated for spring wheat (Triticum aestivum) and spring faba bean (Vicia faba) grown as monocrops and intercrops, and used to identify the most suitable trait combinations in these intercrops via sensitivity analyses. Results The land equivalent ratio of intercrops was greater than one over a wide range of nitrogen fertilizer levels, but transgressive overyielding, with total yield in the intercrop greater than that of either sole crop, was only obtained at intermediate nitrogen applications. We ranked the local sensitivities of the individual yields of wheat and faba bean of the whole intercrop under various nitrogen input levels to various crop traits. Conclusions The total intercrop yield can be improved by selecting specific traits related to phenology of both species, as well as light use efficiency of faba bean and, under high nitrogen applications, of wheat. Changes in height-related crop traits affected individual yields of species in intercrops but not the total intercrop yield.

show abstract

Evaluating soil nitrate dynamics in an intercropping dripped ecosystem using HYDRUS-2D

Cited by 35 publications

References 63 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

Fertigation Strategies to Alleviate Fertilizer Contamination Generated by Tomato Crops under Plastic Greenhouses

Identification of species traits enhancing yield in wheat-faba bean intercropping: development and sensitivity analysis of a minimalist mixture model

Contact Info

Product

Resources

About