Evaluation of DRAINMOD-DSSAT simulated effects of controlled drainage on crop yield, water balance, and water quality for a corn-soybean cropping system in central Iowa

The potential impact of controlled drainage (CD), which limits drainage outflow, and subirrigation (SI), which provides supplemental water through drain tile, on surface water quality are not well known in the Red River Valley (RRV). In this study, water samples were collected and analyzed for chemical concentrations from a tile-drained field that also has controlled drainage and subirrigation modes in the RRV of southeastern North Dakota from 2012–2018. A decreasing trend in overall nutrient load loss was observed because of reduced drainage outflow, though some chemical concentrations were found to be above the recommended surface water quality standards in this region. For example, sulfate was recommended to be below 750 mg/L but was reported at a mean value of 1971 mg/L during spring free drainage. The chemical composition of the subirrigation water was shown to have an impact on drainage water and the soil, specifically on salinity-related parameters, and the impact varied between years. This variation largely depended on the amount of subirrigation applied, soil moisture, and soil properties. Overall, the results of this study show the benefits of controlled drainage on nutrient loss reduction from agricultural fields.

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Controlled Drainage to Improve Edge-of-Field Water Quality in Southwest Minnesota, USA

10.13031/2013.32137 ◽

2010 ◽

Author(s):

Stacey E Feset ◽

Jeffrey S Strock ◽

Gary R Sands ◽

Adam S Birr

Keyword(s):

Water Quality ◽

Controlled Drainage

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Coupling DSSAT and HYDRUS-1D for simulations of soil water dynamics in the soil-plant-atmosphere system

Journal of Hydrology and Hydromechanics ◽

10.1515/johh-2017-0055 ◽

2018 ◽

Vol 66 (2) ◽

pp. 232-245 ◽

Cited By ~ 16

Author(s):

Vakhtang Shelia ◽

Jirka Šimůnek ◽

Ken Boote ◽

Gerrit Hoogenbooom

Keyword(s):

Water Balance ◽

Soil Water ◽

Crop Yield ◽

Crop Growth ◽

Water Dynamics ◽

Soil Water Balance ◽

Soil Water Dynamics ◽

Atmosphere System ◽

Water Contents ◽

Hydrus 1D

AbstractAccurate estimation of the soil water balance of the soil-plant-atmosphere system is key to determining the availability of water resources and their optimal management. Evapotranspiration and leaching are the main sinks of water from the system affecting soil water status and hence crop yield. The accuracy of soil water content and evapotranspiration simulations affects crop yield simulations as well. DSSAT is a suite of field-scale, process-based crop models to simulate crop growth and development. A “tipping bucket” water balance approach is currently used in DSSAT for soil hydrologic and water redistribution processes. By comparison, HYDRUS-1D is a hydrological model to simulate water flow in soils using numerical solutions of the Richards equation, but its approach to crop-related process modeling is rather limited. Both DSSAT and HYDRUS-1D have been widely used and tested in their separate areas of use. The objectives of our study were: (1) to couple HYDRUS-1D with DSSAT to simulate soil water dynamics, crop growth and yield, (2) to evaluate the coupled model using field experimental datasets distributed with DSSAT for different environments, and (3) to compare HYDRUS-1D simulations with those of the tipping bucket approach using the same datasets. Modularity in the software design of both DSSAT and HYDRUS-1D made it easy to couple the two models. The pairing provided the DSSAT interface an ability to use both the tipping bucket and HYDRUS-1D simulation approaches. The two approaches were evaluated in terms of their ability to estimate the soil water balance, especially soil water contents and evapotranspiration rates. Values of thedindex for volumetric water contents were 0.9 and 0.8 for the original and coupled models, respectively. Comparisons of simulations for the pod mass for four soybean and four peanut treatments showed relatively highdindex values for both models (0.94–0.99).

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Influence of cassava planting patterns and pruning methods on crop yield in a cassava-based cropping system

African Crop Science Journal ◽

10.4314/acsj.v12i2.27669 ◽

2004 ◽

Vol 12 (2) ◽

Cited By ~ 3

Author(s):

OT Ayoola ◽

AA Agboola

Keyword(s):

Crop Yield ◽

Cropping System ◽

Pruning Methods

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Integrated Water Balance and Water Quality Management Under Future Climate Change and Population Growth: A Case Study of Upper Litani Basin, Lebanon

10.21203/rs.3.rs-1169379/v1 ◽

2022 ◽

Author(s):

Rana Salim Abou Slaymane ◽

M. Reda Soliman

Keyword(s):

Water Quality ◽

Water Resources ◽

Water Balance ◽

General Circulation ◽

Waste Water Treatment ◽

Water Quality Management ◽

Circulation Model ◽

Future Climate ◽

Future Climate Change ◽

Baseline Scenario

Abstract The impacts of the growing population at Lebanon including Lebanese, Palestinian and Syrian refugees, associated with the changing climate parameters such that the precipitation are putting the Bekaa Valley’s water resources in a stymie situation. The water resources are under significant stress limiting the water availability and deteriorating the water quality at the Upper Litani River Basin (ULRB) within the Bekaa Valley region. These impacts are assessed by Water Evaluation And Planning model to assure the water balance and quality at baseline scenario in 2013, and future scenarios reaching 2095, serving by the Watershed Modeling System to get the flow throughout the Litani River’s ungauged zones. Moreover, a General Circulation Model is used to predict the future climate up to 2100 under several emissions scenarios which shows a critical situation at the high emission scenario where the precipitation will be reduced about 87 mm from 2013 to 2095. The aim of this research is to reduce the water pollution that limits the availability of usable water, and to minimize the gap between the demand and supply of water within the ULRB in order to maintain water resources sustainability, and preserves its quality, even after 80 years. In particular, this may be achieved by removing encroachments on the river, by adding waste water treatment plants, by reducing the amount of lost water in damaged water network, and by avoiding the overconsumption of groundwater.

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Measured Effect of Agricultural Drainage Water Management on Hydrology, Water Quality, and Crop Yield

10.13031/2013.32147 ◽

2010 ◽

Cited By ~ 2

Author(s):

Mark Sunohara ◽

Mohamed A Youssef ◽

Edward Topp ◽

David R Lapen

Keyword(s):

Water Management ◽

Water Quality ◽

Crop Yield ◽

Drainage Water ◽

Agricultural Drainage ◽

Agricultural Drainage Water ◽

Drainage Water Management ◽

Measured Effect

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Substitution of Inorganic Nitrogen Fertilizer with Green Manure (GM) Increased Yield Stability by Improving C Input and Nitrogen Recovery Efficiency in Rice Based Cropping System

Agronomy ◽

10.3390/agronomy9100609 ◽

2019 ◽

Vol 9 (10) ◽

pp. 609 ◽

Cited By ~ 3

Author(s):

Qaswar ◽

Jing ◽

Ahmed ◽

Shujun ◽

Dongchu ◽

...

Keyword(s):

Crop Yield ◽

Green Manure ◽

Inorganic Nitrogen ◽

Cropping System ◽

N Fertilization ◽

Yield Stability ◽

N Fertilizer ◽

Yield Variability ◽

Variability Index ◽

Double Rice

A long-term field experiment was carried out (since 2008) for evaluating the effects of different substitution rates of inorganic nitrogen (N) fertilizer by green manure (GM) on yield stability and N balance under double rice cropping system. Treatments included, (1) N0 (no N fertilizer and no green manure); (2) N100 (recommended rate of N fertilizer and no green manure); (3) N100-M (recommended rate of N fertilizer and green manure); (4) N80-M (80% of recommended N fertilizer and green manure); (5) N60-M (60% of recommended N fertilizer and green manure); and (6) M (green manure without N fertilization). Results showed that, among all treatments, annual crop yield under N80-M treatment was highest. Crop yield did not show significant differences between N100-M and N80-M treatments. Substitution of different N fertilizer rates by GM reduced the yield variability index. Compared to the N0 treatment, yield variability index of early rice under N100-M, N80-M, and N60-M treatments was decreased by 11%, 26%, and 36%, respectively. Compared to the N0 treatment, yield variability index of late rice was decreased by 12%, 38%, 49%, 47%, and 24% under the N100, N100-M, N80-M, N60-M, and M treatments, respectively. During period of 2009–2013 and 2014–2018, nitrogen recovery efficiency (NRE) was highest under N80-M treatment and N balance was highest under N100 treatment. NRE of all treatments with GM was increased over the time from 2009–2013 to 2014–2018. All treatments with GM showed increasing trend of SOC over the years. Substitution of N fertilizer by GM also increased C inputs and soil C:N ratio compared to the N100 and N0 treatments. Boosted regression model indicated that C input, N uptake and AN were most influencing factors of crop yield. Thus, we concluded that N fertilization rates should be reduced by 20% under GM rotation to attain high yield stability of double rice cropping system through increasing NRE and C inputs.

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