Irrigation in Midwest: Lessons from Illinois

Bowman, Jean A.; Simmons, F. William; Kimpel, Brian C.

doi:10.1061/(asce)0733-9437(1991)117:5(700)

Cited by 9 publications

(4 citation statements)

References 10 publications

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“…In the greenhouse, the irrigation schedule was kept similar to a typical crop production setup in the US Midwest. , Artificial soil mixtures were prepared with known mineral and elemental composition and used as growth medium for evaluating the effect of Fh transformation on mobilization and bioavailability of contaminants. The artificial soil contained 2-line Fh as the only source of mineral iron in two concentrations (soil#1: ∼0.10% w/w and soil#2: ∼0.15% w/w), which are within the range of natural soil, as observed in field samples from central and western Nebraska.…”

Section: Resultsmentioning

confidence: 99%

Ferrihydrite Reduction Increases Arsenic and Uranium Bioavailability in Unsaturated Soil

Malakar

Kaiser

Snow

et al. 2020

Environ. Sci. Technol.

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Redox driven mobilization and plant uptake of contaminants under transiently saturated soil conditions need to be clarified to ensure food and water quality across different irrigation systems. We postulate that solid-phase iron reduction in anoxic microsites present in the rhizosphere of unsaturated soil is a key driver for mobilization and bioavailability of contaminants under nonflooded irrigation. To clarify this, two major crops, corn and soybean differing in iron uptake strategies, were grown in irrigated synthetic soil under semiarid conditions with gravimetric moisture content ∼12.5 ± 2.4%. 2-line ferrihydrite, which was coprecipitated with uranium and arsenic, served as the only iron source in soil. Irrespective of crop type, reduced iron was detected in pore water and postexperiment rhizosphere soil confirming ferrihydrite reduction. These results support the presence of localized anoxic microsites in the otherwise aerobic porous bulk soil causing reduction of ferrihydrite and concomitant increase in plant uptake of comobilized contaminants. Our findings indicate that reactive iron minerals undergo reductive dissolution inside anoxic microsites of primarily unsaturated soil, which may have implications on the mobility of trace element contaminants such as arsenic and uranium in irrigated unsaturated soils, accounting for 55% of the irrigated area in the US.

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Section: Resultsmentioning

confidence: 99%

Ferrihydrite Reduction Increases Arsenic and Uranium Bioavailability in Unsaturated Soil

Malakar

Kaiser

Snow

et al. 2020

Environ. Sci. Technol.

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“…In the humid‐climate years, croplands can be fed by precipitation. In the dry‐climate years, in addition to precipitation, groundwater is also the primary source of water for croplands in Illinois (Bowman & Collins, 1987; Bowman & Kimpel, 1991; Bowman et al., 1991; Killey & Larson, 2004; Kirk, 1987). The averaged water table depth of the catchments is about 2 m, which is beneficial to the extraction of groundwater by the roots of croplands (Wang, 2012).…”

Section: Study Area and Datamentioning

confidence: 99%

A New Hydrologic Sensitivity Framework for Unsteady‐State Responses to Climate Change and Its Application to Catchments With Croplands in Illinois

Han

Istanbulluoglu

Wan

et al. 2021

Water Resources Research

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Climate change has been concerned as a trigger of hydrologic changes around the world. Budyko framework was widely used in hydrologic sensitivity analyses on the steady‐state water balance. The unsteady‐state responses, for example the inter‐annual hydrologic sensitivity, were not well investigated, especially for catchments influenced by croplands as that exist in Illinois in the United States. We propose a new hydrologic sensitivity framework for the unsteady‐state condition, together with a new hydrological model, to investigate the impact of croplands on the hydrologic sensitivity. In addition to the Budyko‐type relationship between the annual evapotranspiration ratio (E/P) and the aridity index (Ep/P), this framework incorporates the empirical relationship between the annual storage change ratio (ΔS/P) and Ep/P into sensitivity coefficients. The required data of annual E/P and ΔS/P could be obtained from observation and hydrological models. In particular, the bcd‐αK model is newly developed from the existing bcd model in considering croplands in Illinois, which includes only five parameters while capturing major hydrological processes for catchments with croplands. Results show that the annual E/P, ΔS/P and Q/P in 12 studied catchments have significant linear relationships with Ep/P. The annual runoff is much more sensitive to the change in precipitation than to the change in potential evapotranspiration. The traditional steady‐state analysis overestimates the sensitivity of the evapotranspiration to the change in the precipitation for the unsteady‐state condition and underestimates the variability of sensitivity coefficients among catchments.

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“…The irrigation water requirement of maize generally varies according to evaporative demand and rainfall of that (Kadasiddappa et al, 2013) region (Bowman et al, 1991). Javaid et al (2009) reported that the total ET c for maize crop calculated for the whole growing season by pan evaporation method was 450 mm and daily crop evapotranspiration from date of sowing to harvest indicated that it was initially low, increased gradually up to the mid stage and decreased towards maturity.…”

Section: Effect Of Scheduling Drip and Surface Irrigation On Water Rementioning

confidence: 99%

Irrigation scheduling through drip and surface methods- A critical review on growth, yield, nutrient uptake and water use studies of rabi maize

Malamasuri

Rao

2018

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Water is the prime natural resource, which is often costly and limiting input particularly in arid and semi arid regions, hence needs judicious use to reap the maximum benefit from this limiting resource. Indian farmers are now finding ways to shift from traditional practices to more modern technologies for crop production. Of late, drip irrigation is receiving better appreciation, acceptance, and adaption and plays an important role in saving the water in water scarce areas. It enables the efficient use of limited water with higher water use efficiency. Adaptation of drip irrigation in rabi maize which is one of the amenable crop for drip irrigation system is gaining momentum because of its higher productivity coupled with higher price. Irrigation application can be reduced by 50 to 80 per cent with drip irrigation compared to surface irrigation. Further, drip irrigation has the potential for improving two of the most common contributing factors to N leaching – over fertilization and over irrigation. Therefore, optimum irrigation levels with suitable method would help in enhancing the economic yield as well as water use efficiency of maize crop.

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Irrigation in Midwest: Lessons from Illinois

Cited by 9 publications

References 10 publications

Ferrihydrite Reduction Increases Arsenic and Uranium Bioavailability in Unsaturated Soil

Ferrihydrite Reduction Increases Arsenic and Uranium Bioavailability in Unsaturated Soil

A New Hydrologic Sensitivity Framework for Unsteady‐State Responses to Climate Change and Its Application to Catchments With Croplands in Illinois

Irrigation scheduling through drip and surface methods- A critical review on growth, yield, nutrient uptake and water use studies of rabi maize

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