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Agricultural Water Management
Elsevier
Agricultural Water Management

Elsevier

0378-3774

Agricultural Water Management/Journal Agricultural Water ManagementSCIISTPEI
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    Assessing the performance of satellite soil moisture on agricultural drought monitoring in the North China Plain

    Cao M.Chen M.Liu J.Liu Y....
    15页
    查看更多>>摘要：? 2022 Elsevier B.V.Satellite soil moisture (SM) has been increasingly available and the use of SM-based indices has a great potential for agricultural drought monitoring. This study evaluates the performance of two satellite SM products, the Soil Moisture and Ocean Salinity (SMOS) and Soil Moisture Active Passive (SMAP), on drought detection and assessment in the North China Plain (NCP) over the period of 2015–2018, with a comparison between two SM-based drought indices, Soil Water Deficit Index (SWDI) and Soil Moisture Condition Index (SMCI). Vegetation Condition Index (VCI) and Vegetation Drought Index (VDI) were adopted as the reference indices. Overall, SMAP outperformed SMOS in SM data validation as well as drought detection in the NCP region. A simple bias correction of the satellite SM data was able to improve their performance in characterizing agricultural drought via SM-based indices. Compared with SWDI, SMCI appeared to be the more appropriate index for drought monitoring, by showing a better agreement with both VCI and VDI in terms of drought characteristics (i.e. spatial distribution, drought category and frequency), though both SM-based indices overestimated drought severity to some extent. A simply SM-based drought indicator could be effective when satellite SM was applied for capturing agricultural drought, and a full consideration of longer term satellite data might be necessary.
      原文链接:
    • NSTL
    • Elsevier

    Tracking the hydrologic response of agricultural tile outlet terraces to storm events

    Sullivan P.L.Peltier E.Young B.Brookfield A.E....
    13页
    查看更多>>摘要：? 2022Agricultural practices in intensively managed landscapes are thought to be shifting hydro-bio-geochemical behavior from transformation to transport dominated systems. Here we explore the impacts of a best management practice known as tile-outlet-terraces (TOT). Tiles at this site are a set of perforated vertical pipes that can receive direct surface water, soil water and groundwater inputs that are connected to horizontal pipes that transport water to a receiving pond. Terraces are constructed, horizontal areas created to divide sloping terrains to reduce slope steepness and erosion, and in so doing they redirect surface water toward standpipes and promote soil and groundwater discharge as a result bisecting local flowpaths. While the impact of tiles on hydrologic behavior has been well studied, the combined impact of TOTs has not been well quantified. To address this knowledge gap, we focus on the response of TOT discharge and biogeochemical behavior across three adjacent agroecosystems in Kansas over three growing seasons (2016–2018). TOT discharge was measured every minute at each location and discharge during storm events was collected and analyzed for dissolved and total nutrients as well as major anion and cation chemistry. Additionally, suction cup lysimeters were installed at the ridges and depression of the terraces to capture soil water solute chemistry prior to storm events. Recession curve analysis revealed that tile inlet density was not directly related to the proportion of quickflow, mixing models showed that antecedent conditions played a critical role in the degree of connectivity of event water to the tiles, and concentration discharge behavior showed the dominant behavior for all constituents was chemostatic across all tile densities. Interestingly, these findings suggest that while TOTs shift the hydrology of agroecosystems away from natural conditions, the storm event size and antecedent conditions can still dominate the hydrologic and biogeochemical response to storm events.
      原文链接:
    • NSTL
    • Elsevier

    Impact of mulching and nutrients on soil water balance and actual evapotranspiration of irrigated winter cabbage (Brassica oleracea var. capitata L.)

    Kundu A.Mandal B.Reddy P.Kumar P....
    13页
    查看更多>>摘要：? 2022 Elsevier B.V.An optimal nutrient prescription along with favorable water management through mulching is key to high horticultural productivity, efficient water use, and minimizing soil nutrient loss. A field experiment was conducted in the Balindi Research Complex, Bidhan Chandra Krishi Viswavidyalaya in the Indo-Gangetic Plains of India, to evaluate the impact of mulching and balanced fertilization on actual evapotranspiration (ETa), crop coefficients (Kc), yield and yield attributes of cabbage (Brassica oleracea var. capitata L. cv. Green Express) during the winter seasons of 2018–2019 and 2019–2020 in the cabbage-fallow upland system under surface irrigated conditions. The experiment was laid out in a factorial strip plot design where no mulch (M1), live mulch [M2, Egyptian clover (Trifolium alexandrinum L.)], and paddy straw mulch (M3) were in strips with cabbage. Each treatment contained nutrient levels of 75% (N1), 100% (N2), and 125% (N3) of the recommended dose of an NPK fertilizer (RDF) with 200 N:100 P2O5:100 K2O. Higher soil water conservation under M3 incited 60% and 46% lower profile water change than M1 and M2 treatments, respectively. Paddy straw mulch produced 10.1% and 22.3% more yield and achieved 29.5% and 15.1% higher water productivity (WP) as compared to M1 and M2, respectively. Treatment N3 produced the highest yield and the least partial factor productivity of fertilizer (PFPf) compared to N2 and N1 treatments. Maximum ETa loss was from the M1N3 treatment (226.30 mm) and the highest yield (25,695 kg ha?1), yield attributes, and WP (120.1 kg ha?1 mm?1) were obtained from the M3N3 combination. The average estimated Kc values were 0.5 for initial, 1.0 for crop development, and 1.2 for mid-season, and 0.6 for maturity stages. The results suggest that the application of straw mulch with 125% RDF of chemical fertilizer under surface irrigated conditions improved cabbage yield, water productivity and soil fertility, however, living mulch achieved a higher economic return to the Indo-Gangetic alluvial clay loam Inceptisol of India.
      原文链接:
    • NSTL
    • Elsevier

    Spatiotemporal patterns of water consumption and irrigation requirements of wheat-maize in the Huang-Huai-Hai Plain, China and options of their reduction

    Ren P.Huang F.Li B.
    13页
    查看更多>>摘要：? 2022 Elsevier B.V.Severe water shortages threaten the sustainability of agriculture in the Huang-Huai-Hai Plain (3HP), China. This study investigated spatiotemporal variations in crop water consumption (evapotranspiration, ET) and irrigation water requirements (IWR) under existing winter wheat–summer maize (WWSM) cropping system in the 3HP, and tested alternatives of their reduction that may require less irrigation, i.e., wheat–maize–wheat–fallow (WMWF), wheat–maize–fallow–maize (WMFM), wheat–maize–fallow–spring maize (WMFSM), and fallow–spring maize–fallow–spring maize (FSMFSM). The results showed that the annual ET indicated no significant change from 2001 to 2018, which decreased from southeast to northwest and ranged from 700 mm to 900 mm. In the winter wheat (WW) season, ET increased significantly at the junction of Hebei and Shandong provinces, while it decreased in western Hebei during the summer maize (SM) period. Moreover, ET for WW decreased from dry to normal and wet years (433, 413, and 373, mm), while it increased in SM season (377, 392, and 396, mm). IWR showed great interannual variability. Anhui, central and southern Henan, and southwestern Shandong presented annual IWR below 200 mm, with 100–300 mm in the WW period, and ? 300 (0) – 100 mm in the SM period (negative IWR means rainfall surplus and no real irrigation). The north of the 3HP required considerable irrigation in the WW season, especially in western Hebei and northwestern Shandong (over 300 mm in dry years and 200 mm in wet years), with IWR ranging from ? 100–100 mm in the SM period. The 18-year average IWR of WWSM, WMWF, WMFM, WMFSM, and FSMFSM was 344, 321, 211, 240, and 119 mm, respectively, from 2001 to 2018 (Luancheng as example, same below). Reducing irrigation by 32%, 44%, and 64%, WMFSM, WMFM and FSMFSM showed the greatest potential for reducing IWR, but food security should also be considered when adjustments are made.
      原文链接:
    • NSTL
    • Elsevier

    Water footprint of rain-fed maize in different growth stages and associated climatic driving forces in Northeast China

    Dang Y.Huang L.Wang J.Li B....
    11页
    查看更多>>摘要：? 2022 Elsevier B.V.Rain-fed crops are a major crop type, and their water use is extremely vulnerable to climate change. Studying the water requirement characteristics of rain-fed crops in different growth stages and associated climatic driving factors is of great significance for sustainable crop production. The water footprint (WF) of crops can comprehensively reflect the type and quantity of water consumption during the crop growth period. Previous studies have focused on quantifying the crop WF throughout the growth period, and less attention has been given to quantifying the crop WF in different growth stages. This study quantified the WFs of rain-fed maize and associated climatic driving factors in five growth stages from 1996 to 2018 in Northeast China. The results show that (1) the WF of rain-fed maize in each growth stage showed distinct differences. The highest WF occurred in the tasseling-milky growth stage, whereas the lowest WF occurred in the sowing-emergence growth stage. (2) The variation trends of maize WF in different growth stages were heterogeneous across Northeast China. The declining trends were mainly distributed in the southwest, while increasing trends were mainly distributed in the east in most growth stages. (3) Sunshine hours and temperature had a greater impact on the maize WF in most growth stages. The impacts of other climatic factors on the WF of rain-fed maize differed among different growth stages. Precipitation contributed much more to the variation in maize WF in early growth stages, relative humidity had the greatest impact on the WF of maize in the jointing-tasseling growth stage, and wind speed played a major role in the variation in the maize WF at the milky-mature growth stage. Management measures should be adjusted to alleviate the impact of climatic conditions on crop water consumption in different growth stages according to the results.
      原文链接:
    • NSTL
    • Elsevier

    Calibration and validation of the FAO AquaCrop water productivity model for cassava (Manihot esculenta Crantz)

    Wellens J.Raes D.Diels J.Coppye C....
    10页
    查看更多>>摘要：? 2022FAO's water-driven crop growth simulation model, AquaCrop, was calibrated and validated for cassava (Manihot esculenta Crantz). Existing datasets, used in similar published works, were shared covering several years and regions (Colombia, Nigeria and Togo). Different varieties were tested for the case of Colombia and a single variety (TME-419) for Nigeria and Togo. Overall calibrated biomass simulations resulted in an R2 of 0.96 and a RMSE of 1.99 tonne DM/ha. As for dry tuber yield estimates, it was not possible to find a single harvest index for the ensembled varieties given their varying characteristics and limited data per variety. However, for the TME-419 variety (Nigeria and Togo) calibrated root tuber simulations yielded and R2 of 0.94 and a RMSE of 2.37 tonne DM/ha. A single crop-file was developed for different cassava varieties and agro-ecological regions, which can be applied with confidence to further study cassava related food security, water productivity, improved agronomic practices, etc.
      原文链接:
    • NSTL
    • Elsevier

    Mulching coordinated the seasonal soil hydrothermal relationships and promoted maize productivity in a semi-arid rainfed area on the Loess Plateau

    Wang H.Zhang X.Zhang G.Yu X....
    10页
    查看更多>>摘要：? 2022 Elsevier B.V.Mulching can improve crop productivity in semi-arid regions by improving hydrothermal conditions. However, there is a lack of systematic understanding of hydrothermal coordination mechanisms in long-term field experiments, which is also critical for sustainable agricultural development. This experiment had four treatments: (1) plastic mulching (PM); (2) sand mulching (SM); (3) alternate plastic and sand mulching (PSM); and (4) without mulching (CK). The results showed that before sowing, the soil water storage in the 0–300 cm profile of the PM, SM, and PSM treatments increased by 20.4%, 13.9%, and 12.2% compared with CK, respectively. The water consumption was ranked in the order of PM > PSM > SM > CK in the filling stage; and the ≥ 10 ℃ accumulated soil temperature in PM, SM, and PSM increased by 126.9 ℃, 58.3 ℃, and 77.3 ℃ in the seedling–jointing stage compared with CK, respectively. There was a significant positive correlation between maize growth rate and ≥ 10 ℃ accumulated soil temperature in all treatments in the seedling–tasseling stage, and the response sensitivities of maize growth rate to ≥ 10 ℃ accumulated soil temperature of PM, SM, and PSM were highest in seedling–jointing, jointing–tasseling, and filling stages, respectively. There was a significant positive correlation between maize growth rate and seasonal water consumption, and response sensitivity was ranked in the order of PM > PSM > SM > CK in the seedling–jointing, jointing–tasseling, and tasseling–filling stages and PM < PSM < SM < CK in the filling stage. The seasonal water consumption in the jointing–tasseling stage was most critical to yield formation, and mulching reduced this response sensitivity. After 10 years of cropping, the soil water storage in the 0–300 cm profile decreased by 230.8, 202.9, 243.8, and 228.2 mm in the PM, SM, PSM, and CK treatments, respectively. The mulching practices coordinated soil hydrothermal relationships, with yield and water use efficiency (WUE) ranked in the order of PM > PSM > SM > CK for annual precipitation of 323.1–418.3 mm, and significantly differing (P < 0.05). The yield and WUE of PM and PSM did not significantly differ for annual precipitation of 484.4–533.3 mm and were significantly higher than those for SM and CK. These indicated that PM should be preferentially adopted in areas with rainfall below 420 mm, and the PSM in areas with rainfall above 420 mm, resulting in higher yield and WUE and less plastic film pollution.
      原文链接:
    • NSTL
    • Elsevier

    Partial root zone drying increases peppermint essential oil yield and water productivity

    Akbarzadeh M.Akbarzadeh A.Shahnazari A.Ziatabar Ahmadi M....
    10页
    查看更多>>摘要：? 2022 Elsevier B.V.The effects of varying irrigation volume and placement (regulated deficit irrigation that irrigated the entire root zone versus partial root zone drying that irrigated only half of the root zone at a time), on drip-irrigated peppermint (Mentha piperita L.) were studied. Treatments included full irrigation (FI) and regulated deficit irrigation receiving 85%, 70%, 55% and 40% of the irrigation volume of the full irrigation treatment (RDI85, RDI70, RDI55 and RDI40 respectively), and partial root zone drying receiving 70%, 55% and 40% of the irrigation volume of the full irrigation treatment(PRD70, PRD55 and PRD40 respectively). Plants were harvested at mid-flowering stage over two consecutive seasons. The steam distillation method used to extract essential oil. At the first harvest, biological yield (dried leaf and stem weight) generally did not significantly differ between the full irrigation, partial root zone drying, and regulated deficit irrigation treatments, but yield of RDI40 decreased by 33% compared to FI plants. However, deficit irrigation strategies significantly increased essential oil yield and ratio (Percentage of essential oil in 80 g of leaves), with the highest biological yield in FI and highest essential oil yield in PRD70, at rates of 1942 kg/ha and 23.7 kg/ha, respectively. Irrigation water productivity based on oil yield was significantly higher in partial root zone drying treatments than full irrigation and regulated deficit irrigation treatments, with the highest value achieved in PRD55 at a rate of 0.0191 kg/m3. At the second harvest, plant biological yield components were not affected by the irrigation treatments, but again the partial root zone drying treatments produced higher essential oil ratio and yield. Since the major goal of peppermint production is to extract its oil, it is recommended to apply a moderate water deficit with the PRD70 and PRD55 techniques, to allow significant (30–45%) water-saving and also reasonable yield.
      原文链接:
    • NSTL
    • Elsevier

    Assessing variation and driving factors of the county-scale water footprint for soybean production in China

    Chu Q.Wang K.Zhao J.Han T....
    11页
    查看更多>>摘要：? 2022 Elsevier B.V.Water scarcity and food security are major challenges facing the world in the 21st century. The water footprint provides a new and comprehensive approach for understanding the relationship between crop production and water utilization, and it has been used to estimate the water consumption of most crops at global and regional scales. However, the water footprint of soybean production (WFP) in China has not been extensively studied. Here, this study investigated firstly the components, spatial-temporal variation, as well as the driving factors of the county-scale WFP during the period of 1985–2015 in China. Annual WFP first increased and then decreased from 26.86 G m3 (109 m3) in 1985–24.62 G m3 in 2015. The WFP exhibited a clustered spatial distribution across the entire study area, and high-value areas for WFP were mainly distributed in the Northeast, North-central, and Middle and Lower Reaches of the Yangtze River Regions. The spatial distribution of WFP at the county level tends to be dispersed in studied period. The proportion of green water footprint (WFPgreen) reached as high as 70% of the WFP, whereas it decreased in the northern areas accompanied by the increased WFPblue proportion. Soybean yield was the major factor affecting WFP, and the increase in soybean yield contributed to the 32.80% decrease in the water footprint per ton soybean over the entire study period, further saved the 50.75 G m3 water resource for national soybean production in 2015. The results of this study provide new insights that could be used to improve agricultural water management, optimize regional water resource allocation, and alleviate water shortages in China.
      原文链接:
    • NSTL
    • Elsevier

    Magnetically-treated brackish water affects soil water-salt distribution and the growth of cotton with film mulch drip irrigation in Xinjiang, China

    Zhou B.Chen X.Peng Y.Yang L....
    12页
    查看更多>>摘要：? 2022 Elsevier B.V.Magnetically-treated brackish water can physically improve the quality of water used for irrigation. When combined with drip irrigation and mulching, this strategy can be valuable for agricultural production in arid and semi-arid areas. To evaluate the effects of magnetically-treated brackish water on soil water-salt distribution and cotton growth in Xinjiang, field experiments were conducted in 2017 and 2018 with magnetically-treated brackish water of five magnetization intensities: 0 Gs (CK), 1000 Gs (G1), 2000 Gs (G2), 4000 Gs (G4), and 5000 Gs (G5). The results showed that magnetically-treated brackish water (2.7 g L?1 (EC: 0.6 dS m?1)) could enhance soil water retention, promote root water absorption, and improve water productivity (WP). Magnetically-treated brackish water with 4000 Gs intensity showed the greatest improvement in water retention in the 0–100 cm soil layer. The average salt content in the soil irrigated with magnetically-treated brackish water of different intensities was in the order G4 <G2 <G5 <G1 <CK, indicating that magnetically-treated brackish water can effectively reduce the salt content and promote salt leaching. The desalinization rate, cotton yield, and WP were highest when the magnetization intensity was 4000 Gs, followed by 2000 Gs, which helped to alleviate the shortage of freshwater resources and reduce the risk of soil salinization. This study could provide a method for using brackish water safely and serve as a theoretical guide for water-saving and cotton yield increase in Xinjiang, China.
      原文链接:
    • NSTL
    • Elsevier