首页期刊导航|Agricultural Water Management
期刊信息/Journal information
Agricultural Water Management
Elsevier
Agricultural Water Management

Elsevier

0378-3774

Agricultural Water Management/Journal Agricultural Water ManagementSCIISTPEI
正式出版
收录年代

    Ridge–furrow rainfall harvesting system helps to improve stability, benefits and precipitation utilization efficiency of maize production in Loess Plateau region of China

    Chen G.Wu P.Wang J.Zhang P....
    14页
    查看更多>>摘要：? 2021 Elsevier B.V.The ridge–furrow rainfall harvesting (RFRH) system is considered an effective strategy for improving crop productivity and it has been adopted increasingly in the arid and semiarid rainfed agricultural areas of China. However, how RFRH performs at improving the crop productivity and the economic benefits of long-term implementation are not known in different counties and conditions in the Loess Plateau region. Therefore, RFRH and traditional planting method (CK) experiments were carried out by us under five different hydrothermal conditions in the Loess Plateau for many years. The denitrification–decomposition (DNDC) model was corrected and verified by field test data. Then, the performance of RFRH and CK in time (from 1990 to 2019, three test points) and space (387 counties, 112,000 km?2 grain crop planting area) was simulated. The results showed that from 1990 to 2019, the maize yield was 9200–11,395 kg ha–1 under RFRH and 1433–11,326 kg ha–1 under CK. The interannual variation in the maize yield was small under RFRH and it significantly improved the maize yield in dry years (87.0% higher than CK). In addition, RFRH effectively stabilized and improved the maize biomass (increased by 26.9%), harvest index (increased by 24.3%), and economic benefits (increased by 63.4%). In the whole Loess Plateau region, compared with CK, the average grain yield under RFRH increased by 86% and the average net income increased by 133%. The capacity of RFRH to increase the economic benefits in the Loess Plateau regions followed the order of: northwest region > northeast region > southwest region > southeast region. RFRH can improve and stabilize the maize yield, but also enhance the economic benefits of maize production in this region. Therefore, RFRH can be used as an important technique for coping with years when different amounts of precipitation occur in the Loess Plateau region, but especially in the northwest where the precipitation is limited.
      原文链接:
    • NSTL
    • Elsevier

    Deep soil water storage and drainage following conversion of deep rooted to shallow rooted vegetation

    Miao C.Zhang Z.Li H.Si B.C....
    8页
    查看更多>>摘要：? 2021 Elsevier B.V.Deep soil water management is important for agroforests to combat frequent droughts. However, little is known about how deep soil water (up to 15.0 m) and its deep drainage after trees fell evolves with time (< 20 years) in deep vadose zone. Therefore, this study was aimed at evaluating the impact of orchards removal on the replenishment of deep soil water and its deep drainage in a sub-humid region on the Loess Plateau, China (LPC). We established paired experimental plots between cultivated farmlands after deforested land and mature/aged orchards. Soil water storage and deep drainage were calculated from the measured soil water contents based on deep soil sampling (down to 6–15.0 m). Then, the time evolution of soil water storage and deep drainage rates were obtained based on the space for time substitution. Results showed that the replenishing front (indicated by the increase of soil water) deepened with time after orchard removal, which progressively increased deep soil water content. The drainage rates increased suddenly right after orchard removal and attained a constant value of 22.0 ± 3.1 mm yr?1 after the conversion. With this deep drainage rate, deep soil water deficit created by prior mature orchards would require 48–69 years of annual crop cultivation. Therefore, this study helps improve the further understanding of ecohydrological process under land use and management of deep soil water storage for increasing resiliency of agroforests to climate change.
      原文链接:
    • NSTL
    • Elsevier

    Yield response of a mature hedgerow oil olive orchard to different levels of water stress during pit hardening

    Corell M.Andreu L.Recena R.Galindo A....
    12页
    查看更多>>摘要：? 2021 Elsevier B.V.Drought sensitivity in olive trees varies throughout the season. The yield response to drought needs to consider the final use of the fruits and harvest date. In Mediterranean climates, the oil accumulation tends to occur in a period of low evaporative demand and during the rainy period. The aim of this work was to evaluate the effect of water stress during pit hardening on the yield components of oil olive trees. The experiment was conducted during three seasons (2017–2019) in a mature hedgerow olive orchard (11 years-old, Arbequina cv). The experiment design was a randomized completed block with 4 repetitions of 4 different irrigation treatments. Treatments were: Control, no water stress throughout the season; Regulated deficit irrigation (RDI)-1, moderate water stress during pit hardening and total recovery after the last week of August; RDI-2, same as RDI-1 but with severe water stress and partial recovery; and sustained deficit irrigation (SDI), constant applied water rate and the same seasonal water than RDI-2. The irrigation scheduling in RDIs were based on the frequencies of the trunk growth rate. No significant differences were found in fruit and oil yield between treatments. There were a significant relationship between water status measurements and fruit and oil yield. Part of the decrease in fruit yield with midday stem water potential (SWP) was related to fruit moisture, as no significant fruit drop was found. Only conditions of water stress in 2017, before the end of endocarp size, were related to a great reduction of fruit volume and, consequently, with fruit and oil yield. The relationship between the percentage of oil in dry weight and SWP was quadratic in different phases. Such relationships could help quantify the water stress level in these periods to maximize oil accumulation.
      原文链接:
    • NSTL
    • Elsevier

    Multi-model projections of trade-offs between irrigated and rainfed maize yields under changing climate and future emission scenarios

    Irmak S.Kukal M.S.Sandhu R.
    15页
    查看更多>>摘要：? 2021 Elsevier B.V.Eighteen global circulation models (GCMs) were evaluated to determine the potential impacts of future climate change on irrigated and rainfed maize yields using the FAO AquaCrop model on an inter-annual and decadal basis (2020 s until 2090 s). Prior to deemed fit for future simulations, AquaCrop model was subject to comprehensive calibration and validation using extensive field-measured long-term datasets. We observed declines in (decadal) rainfed maize yields, ranging from 2.2% (0.2 t/ha) to 17% (1.4 t/ha) and from 8.1% (0.6 t/ha) to 21.5% (1.7 t/ha) under Representative Concentration Pathways (RCPs) RCP 4.5 and RCP 8.5, respectively. The range of declines was lower for irrigated yields [3.7% (0.5 t/ha) to 6.7% (1.0 t/ha) and 4.3% (0.6 t/ha) to 15.6% (2.2 t/ha) under RCP 4.5 and RCP 8.5, respectively]. Near maximal yield declines were distributed uniformly across the century and almost all decades exhibited > 10% yield declines under at least one emission scenario. Both economic (grain yield) advantage associated with irrigation (difference in irrigated and rainfed yields) and yield stabilizing benefit of irrigation (difference in rainfed and irrigated yield variability) are projected to decrease significantly (p < 0.05) under RCP 8.5. Rainfed maize yield variability was 533% and 200% greater than irrigated yield variability under RCP 4.5 and RCP 8.5, respectively. For RCP 4.5, the long-term mean inter-GCM (2020–2099) standard deviation in rainfed yields (4.6 t/ha) was 460% greater than that in irrigated yields (0.8 t/ha), while for RCP 8.5, this difference was 271% (4.6 t/ha vs. 1.2 t/ha). Tmax and Tmin were able to explain more variability in irrigated than rainfed maize yields, the difference being 229% and 126%, respectively. Precipitation change explained 46% and 50% of the variability in rainfed yield change under RCP 4.5 and RCP 8.5, respectively, and was 100% and 733% greater than what was explained for irrigated yield variability. The research findings hold significance for water allocation considering how dynamics of grain yields vs. availability of irrigation may manifest in the future.
      原文链接:
    • NSTL
    • Elsevier

    Methods to estimate evapotranspiration in humid and subtropical climate conditions

    Vishwakarma D.K.Pandey K.Kaur A.Kushwaha N.L....
    22页
    查看更多>>摘要：? 2021 Elsevier B.V.Selecting appropriate reference evapotranspiration (ETo) methods is crucial for managing water resources efficiently. Statistical criteria commonly used to assess the performance of empirical ETo models on a station level may produce inconsistent results, making ranking approaches a complex process. This study was conducted in India's Humid and Subtropical region, considering 11 years of mean daily data from 2009 to 2019. We evaluated thirty empirical ETo models, which were categorized into four groups based on the input parameters, namely, temperature-based (10), radiation-based (10), mass transfer-based (9), and combination model (1). The results show that the observed ETo reached maximum magnitude during Monsoon followed by Spring, Summer, Autumn, Winter, and pre-Winter season; the average observed ETo from 2009 to 2019 was ≈ 1163 mm. Among temperature-based and radiation-based models, the Hargreaves model with RMSE of 1.45 mm/day and the Turc model with RMSE of 1.01 mm/day yielded the best ETo predictions under the humid, sub-tropical climate conditions. The radiation-based models demonstrate higher accuracy in the prediction of ETo than the temperature-based and mass transfer-based models. The FAO56-PM technique, Turc model, Hargreaves model, Makkink model, and Papadakis model were ranked as the five best models among all 30 tested models. Overall, the FAO56-PM method outperformed among all 30 selected models. Thus, the exact calculation of ETo is essential for many agricultural water engineering applications, particularly in developing countries with a lack of meteorological data records and limited resources to conduct long-term in-situ observation of evapotranspiration. The methodological approach proposed in this work applies to any other location for a simple yet rigorous evaluation of evapotranspiration empirically.
      原文链接:
    • NSTL
    • Elsevier

    Mutating fuzzy logic model with various rigorous meta-heuristic algorithms for soil moisture content estimation

    Mahmoudi N.Shiri J.Majidi A.Jamei M....
    22页
    查看更多>>摘要：? 2021 Elsevier B.V.Soil moisture content (SMC) prediction can contribute to diverse geo-science engineering applications such as plantation, crops production, and several irrigation activities. Although, there have been several methodologies introduced for the SMS estimation, methods are still associated with challenges and limitations (e.g., time-consuming, high cost, and the need for large data sets). In the current research, the motivation was inspired to develop new data-intelligence models that are capable to estimate SMC accurately and reliably. Several hybridized adaptive neuro fuzzy inference system (NF) models were developed. The feasibility of four meta-heuristic algorithms including the gray wolf optimization (GWO), Bee algorithm (BA), Firefly algorithm (FA), and imperialistic competitive algorithm (ICA), were used to improve the predictability performance of the NF model. The performances of the hybrid models were tested at two different climate characteristics (i.e., humid and arid) and four different soil depths (5, 10, 20, and 50 cm). The dataset used in this study were consisted of ten years with daily scale. Practical inputs predictors for the prediction matrix were identified using the mutual information method (MI) and correlation coefficient, which included maximum and minimum temperature, solar radiation, and soil temperature. K-Fold technique and various indices were used to evaluate hybrid models. Despite the promising results of all developed models, the NF-FA is superior to the others in both climates. The average results of all depths (in humid climate) using correlation coefficient (r), mean absolute percentage error (MAPE), and scattering index (SI) were 0.924, 6.089%, and 0.074, respectively. While in the arid climate, NF-FA model attained 0.903, 14.439%, and 0.176 in r, MAPE, and SI, respectively. The evaluation of different depths and climates showed that NF-FA yielded the best accuracy within humid climates and depths of 20 and 10 cm had the lowest estimation error in humid and arid climates. This study introduced the FA algorithm as an efficient tool in NF development to estimate SMC by readily available inputs without knowing soil physical parameters.
      原文链接:
    • NSTL
    • Elsevier

    Fine root plasticity of young Populus tomentosa plantations under drip irrigation and nitrogen fertigation in the North China Plain

    He Y.Xi B.Jia L.Li G....
    11页
    查看更多>>摘要：? 2021 Elsevier B.V.A field experiment was conducted in 2017 and 2018 to investigate the responses of fine root growth and morphology plasticity to drip irrigation and nitrogen fertigation (DIF) in a young triploid P. tomentosa plantation in the North China Plain. We monitored four DIF treatments (I20F0, I20FH, I45F0, I45FH), which were the combinations of two irrigation thresholds (? 20 kPa and ? 45 kPa, denoted as I20 and I45) and two N fertigation amounts (0, denoted as F0; 220 and 260 kg N ha?1 year?1 in 2017 and 2018, denoted as FH). Some soil properties and aboveground growth parameters were also monitored. I20 significantly improved fine root biomass density (FRBD) by 156.92% and induced a significant reduction of specific root length (SRL) by 28.79% in 0–30 cm soil layers than I45, and FH significantly decreased fine root length density (? 62.88%), surface area (? 54.01%), and SRL (? 39.01%) in 30–80 cm soil layers than F0 in 2017. Fine root traits differed little among DIF treatments in 0–30 cm soil layers in 2018, but I20 significantly improved FRBD by 259.98% than I45 and FH significantly improved fine root averaged diameter by 67.14% in 30–80 cm soil layers than F0. These suggested that fine root had a conservative foraging strategy in water- and nitrogen-rich conditions. All the trait plasticity might be due to the changeable soil properties (i.e. soil water content, organic matter, nitrate and ammonium nitrogen, and total phosphorus). Based on the little difference of fine root mass among DIF treatments in two years, we hold the view that fine root distribution pattern and some growth and morphological traits adapted to water-nitrogen heterogeneity more easily than the mass plasticity in young aged P. tomentosa plantations. Yet enhancing our understanding of fine root foraging strategy in response to DIF practices and how it affects tree growth requires more attention to some physiological and biochemical processes and the growth dynamics of the root systems.
      原文链接:
    • NSTL
    • Elsevier

    Nutrient dynamics in stream water and groundwater in riparian zones of a mesoscale agricultural catchment with intense seasonal pumping

    Kwon H.-I.Koh D.-C.Cho B.-W.Jung Y.-Y....
    15页
    查看更多>>摘要：? 2021 Elsevier B.V.Water and soil in agricultural areas are usually enriched with nutrients from excessive fertilizations. Riparian zones, the interfaces between terrestrial and aquatic systems, play crucial roles in delivery of the nutrients to groundwater and surface water. We evaluated spatiotemporal variations of water flow and nutrients in a mesoscale agricultural catchment along the riparian zones of the main stream for dry and rainy season by hydrologic monitoring and measurements of hydrochemical parameters and water stable isotopes. Gaining stream conditions were dominant in the mountainous upper reaches with steep topographic gradient while groundwater level in the lower basin considerably varied seasonally due to intense groundwater pumping to aid in heating greenhouses in winter season, which resulted in losing stream conditions during the dry season. Compared to shallow groundwater, deep groundwater had higher nitrate concentration derived from dry farmland in hilly terrains and induced recharge due to the groundwater pumping. Nitrate concentration was significantly higher in groundwater than that in stream water, indicating that groundwater is a major source of nitrate in stream water considering mainly gaining stream conditions. Compared to stream water, dissolved phosphorus concentration was higher in shallow groundwater recharged from paddy fields and floodplain areas with reducing conditions, evaporation signature of water stable isotopes, and lower nitrate concentration. Nutrient flux estimates for the catchment revealed that nitrate in stream water is considerably contributed by groundwater discharge and shallow groundwater in reducing conditions is a significant source of dissolved phosphorus in stream water, which was more pronounced in the rainy season. This study demonstrated that intense agricultural activities in riparian zones strongly affect stream-aquifer interactions and nutrient delivery to the stream, as well as groundwater. These findings can contribute to understanding hydrological and biogeochemical processes of nutrients in agricultural catchments and establishing an effective management of water use and nutrient application.
      原文链接:
    • NSTL
    • Elsevier

    Long-term straw rather than manure additions improved least limiting water range in a Vertisol

    Ruan R.Zhang Z.Wang Y.Guo Z....
    8页
    查看更多>>摘要：? 2021 Elsevier B.V.Least limiting water range (LLWR) is a range in soil water content not limiting root growth, which integrates the effect of soil water retention, aeration, and penetration resistance. This study aimed to assess the effect of different long-term fertilization treatments on LLWR in the surface layer of a Vertisol. Soil samples were taken from six long-term fertilization treatments including no fertilization (Control), inorganic fertilization (NPK), inorganic fertilization plus low amount of straw (NPKLS), inorganic fertilization plus high amount of straw (NPKHS), inorganic fertilization plus pig manure (NPKPM) and inorganic fertilization plus cow manure (NPKCM) for measuring LLWR. Results showed that in comparison with the Control, the manure treatments (NPKPM and NPKCM) increased soil organic carbon content (SOC) more pronounced than the straw treatments (NPKLS and NPKHS). However, the water stable aggregates (WSA0.25) in the manure treatments was much smaller than the straw treatments. Soil water content at field capacity (θFC) was significantly higher in the manure treatments (NPKPM and NPKCM) than the other treatments. However, soil water content at soil penetration resistance of 3 MPa (θPR) was significantly lower in the straw treatments than in the manure treatments. The LLWR in the manure treatments had sharper decline with bulk density than the other treatments. In comparison with the Control and NPK treatments, the straw treatments significantly increased the LLWR, but manure treatments did not, probably resulting from positive relation between SOC and penetration resistance at a given soil water content and less favorable effect of the manures on soil aggregation than the straw. The S index was significantly increased by the NPKCM treatment relative to the Control, and positively correlated with the SOC. The variation of WSA0.25 instead of SOC could explain the change of LLWR under different fertilization treatments effectively. These observations imply that the LLWR could assess the effect of organic fertilizations on soil physical quality more comprehensively.
      原文链接:
    • NSTL
    • Elsevier

    Growth inhibition and microcystin accumulation in bush bean (Phaseolus vulgaris L.) plant irrigated with water containing toxic Chrooccocus minutus

    Mohamed Z.Bakr A.Nasr S.A.-M.Campos A....
    7页
    查看更多>>摘要：? 2021 Elsevier B.V.Cyanobacterial blooms and microcystins (MCs) in irrigation waters have been recognized as an emergent environmental threat to many terrestrial plants. While several studies addressed the impacts of crude cyanobacterial extracts and dissolved MC-containing water on crop plants, less is known about the effects of irrigation water containing cyanobacterial blooms (i.e., intracellular plus extracellular toxins). In the present study, we investigated the effects of whole culture, cell-free culture filtrate and living cells of the toxic cyanobacterium Chroococcus minutus on growth, physiological parameters and MC accumulation in Phaseolus vulgaris (bush bean) plants. The plants were grown in pots containing agricultural soil, in order to mimic common agricultural practice. After 4 weeks of growth, treated plants exhibited substantial reduction in root and shoot growth, photosynthetic pigments, and protein contents compared to control plants. Treated plants also showed higher lipid peroxidation than control plants. The lowest inhibitory effects were observed in plants treated with culture filtrate containing extracellular MCs only (15.3 μg L?1). The highest inhibitory effects were recorded in plants treated with whole cyanobacterial culture containing both intra- and extracellular MCs (132 μg L?1), indicating the release of intracellular MCs from cells into the rizhosphere and their uptake by plant roots. MC concentrations in immature pods of P. vulgaris plants irrigated with whole culture and living cyanobacterial cells led to estimates of daily MCs intake (0.125–0.391 μg kg?1 body weight) that exceeded the total daily intake guidelines (0.04 μg kg?1 body weight) for human food consumption. This study suggests that irrigation water as well as plants used in human consumption should be regularly monitored for the presence of MCs and other cyanotoxins.
      原文链接:
    • NSTL
    • Elsevier