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1. Economic and efficient method of design of a flumed canal fall

Author:
Mazumder, S. K.
Source:
ISH journal of hydraulic engineering 2019 v.25 no.1 pp. 44-50
ISSN:
2164-3040
Subject:
irrigation canals,   etc   ; basins; energy;     Show all 3 Subjects
Abstract:
... Innumerable falls are to be provided in irrigation canals where ground slope exceeds the permissible bed slope of a canal. In the conventional method of design, fluming ratio is fixed arbitrarily irrespective of inflow Froude’s number. Long lengths of inlet and outlet transitions are provided to prevent flow separation. Transition and dissipation structures are kept separate resulting in high cost ...
DOI:
10.1080/09715010.2017.1364982

2. Adjusting irrigation uniformity coefficients for unimportant variability on a small scale

Author:
Mohamed, Abdelmoneim Z.; Peters, R. Troy; Zhu, Xingye; Sarwar, Abid
Source:
Agricultural water management 2019 v.213 pp. 1078-1083
ISSN:
0378-3774
Subject:
irrigation rates; irrigation water; sprinkler irrigation,   etc   ; cans; crops; soil; Oregon; Washington (state);     Show all 8 Subjects
Abstract:
... Distribution Uniformity (DU) and the Coefficient of Uniformity (CU) are commonly used irrigation performance measures of how evenly water is applied across a field during irrigation. The more DU or CU can be improved, the more water will be conserved and the better the crop will perform. DU and CU are most commonly measured for sprinkler irrigation using catch cans. Gross irrigation amounts are of ...
DOI:
10.1016/j.agwat.2018.07.017

3. Irrigation scheduling of paddy rice using short-term weather forecast data

Author:
Cao, Jingjing; Tan, Junwei; Cui, Yuanlai; Luo, Yufeng
Source:
Agricultural water management 2019 v.213 pp. 714-723
ISSN:
0378-3774
Subject:
irrigation scheduling; irrigation water,   etc   ; climate; decision making; drainage; probability; rain; rice; water conservation; weather forecasting; China;     Show all 11 Subjects
Abstract:
... Better use of rainfall is an essential strategy to save irrigation water for paddy rice. Since unnecessary irrigation is usually applied to field without considering the possible rainfall after irrigation, weather forecast (e.g., rainfall) can be used to potentially save irrigation water. In this study, the rainfall event mainly focused on the total rainfall in consecutive 3 days within rice growt ...
DOI:
10.1016/j.agwat.2018.10.046

4. Research idea to science for impact: Tracing the significant moments in an innovation based irrigation study

Author:
Srinivasan, M.S.; Jongmans, C.; Bewsell, D.; Elley, G.
Source:
Agricultural water management 2019 v.212 pp. 181-192
ISSN:
0378-3774
Subject:
irrigation scheduling; irrigation water,   etc   ; data collection; farmers; outreach; researchers; stakeholders; water use efficiency; New Zealand;     Show all 9 Subjects
Abstract:
... Uptake of irrigation scheduling tools by New Zealand (NZ) farmers has remained static for many years and some researchers consider the use of linear, tech-transfer approaches as the main reason for this. To understand the controls and drivers that influence the uptake of these tools and to evaluate the effectiveness of a co-innovation approach in improving their (tools) uptake, a team of biophysic ...
DOI:
10.1016/j.agwat.2018.08.045

5. Water demand related to availability and price in an irrigation district in the Segura Basin

Author:
Alarcón Luque, Javier; Juana Sirgado, Luis
Source:
International journal of water resources development 2019 v.35 no.1 pp. 160-174
ISSN:
1360-0648
Subject:
irrigation; irrigation water,   etc   ; basins; farmers; irrigated farming; prices; water allocation; water resources;     Show all 8 Subjects
Abstract:
... A methodology is presented to determine the demand of water to alternative sources, given the benefit functions of irrigation water in each unit of demand, and assuming that farmers will buy water if the price is less than the marginal benefit. In the study area, the benefits of farmers are estimated based on the availability of conventional water resources, the water allocation made and the sale ...
DOI:
10.1080/07900627.2017.1404971

6. Field Comparison of Infiltration in Conventional and Alternate Furrow Irrigation under Various Initial and Boundary Conditions

Author:
Dialameh, Babak; Parsinejad, Masoud; Ebrahimian, Hamed; Mokhtari, Ali
Source:
Irrigation and drainage 2018 v.67 no.2 pp. 156-165
ISSN:
1531-0353
Subject:
furrow irrigation; irrigation scheduling,   etc   ; water content;     Show all 3 Subject
Abstract:
... A field study was conducted to evaluate the effect of two‐dimensional infiltration on management of conventional furrow irrigation (CFI) and alternate furrow irrigation (AFI). For this purpose, 48 infiltration tests were carried out in CFI and AFI under two different irrigation intervals (4 and 9 days) with two different water heads (5 and 10 cm). The results indicated that under higher water head ...
DOI:
10.1002/ird.2176

7. Uncertainties in leaching assessment in micro-irrigated fields using water balance approach

Author:
Kisekka, Isaya; Kandelous, Maziar M.; Sanden, Blake; Hopmans, Jan W.
Source:
Agricultural water management 2019 v.213 pp. 107-115
ISSN:
0378-3774
Subject:
irrigation management; irrigation systems; irrigation water,   etc   ; agricultural land; groundwater; leaching; monitoring; pollution load; rhizosphere; salinity; soil water; soil water storage; uncertainty; water resources; water table;     Show all 15 Subjects
Abstract:
... Leaching is an important aspect of irrigation water management, as it must be minimal to save available irrigation water resources, prevent shallow groundwater tables, and reduce nutrient loadings to the groundwater. However, at the same time, leaching should be sufficient to maintain root zone salinity levels below the threshold to prevent yield reduction. Therefore, monitoring leaching is the ke ...
DOI:
10.1016/j.agwat.2018.10.012

8. Effect of canal width contraction on the hydraulic parameters and scour downstream water structures

Author:
Ashour, Mohamed A.; Aly, Tawab E.; Mostafa, Mahmoud M.
Source:
Limnological review 2018 v.18 no.3 pp. 93-101
ISSN:
2300-7575
Subject:
irrigation,   etc   ; models; streams;     Show all 3 Subjects
Abstract:
... The dimensions of many water streams, which satisfy proper hydraulic conditions, may not be compatible with the designed dimensions of an irrigation work that needs to be constructed in some locations. The design requirements of such irrigation works may involve a contraction in the channel width in the required location. This contraction, of course, affects different flow properties and the scour ...
DOI:
10.2478/limre-2018-0010

9. Influence of an intentionally induced posterior lens capsule rupture on the real‐time intraocular pressure during phacoemulsification in canine ex vivo eyes

Author:
Kang, Seonmi; Park, Sangwan; Park, Eunjin; Lim, Jaegook; Seo, Kangmoon
Source:
Veterinary ophthalmology 2018 v.21 no.1 pp. 35-41
ISSN:
1463-5216
Subject:
irrigation,   etc   ; cornea; dogs; ophthalmology;     Show all 4 Subjects
Abstract:
... OBJECTIVE: To evaluate the changes in the intraocular pressure (IOP) following an intentionally induced posterior lens capsule rupture (PLCR) during phacoemulsification in enucleated canine eyes. Furthermore, to compare the IOPs between different stages of phacoemulsification for two different bottle heights (BH). PROCEDURES: Coaxial phacoemulsification was performed using a venturi‐based machine ...
DOI:
10.1111/vop.12475

10. Determining the influence of irrigation efficiency improvement on water use and consumption by conceptually considering hydrological pathways

Author:
Zhang, Ling; Ma, Qimin; Zhao, Yanbo; Wu, Xiaobo; Yu, Wenjun
Source:
Agricultural water management 2019 v.213 pp. 674-681
ISSN:
0378-3774
Subject:
irrigation systems,   etc   ; hydrology; models; modernization; uncertainty; water conservation; water supply;     Show all 7 Subjects
Abstract:
... Improving irrigation efficiency is widely believed to be a promising opportunity for large water savings. However, more and more voices have been raised against this idea in recent years. This study investigated the impacts of irrigation efficiency improvement on water use and consumption by combining an agro-economic model with the conceptualization of hydrological pathways. The investigation was ...
DOI:
10.1016/j.agwat.2018.11.016

11. Simulation of regional irrigation requirement with SWAT in different agro-climatic zones driven by observed climate and two reanalysis datasets

Author:
Uniyal, Bhumika; Dietrich, Jörg; Vu, Ngoc Quynh; Jha, Madan K.; Arumí, José Luis
Source:
The Science of the total environment 2019 v.649 pp. 846-865
ISSN:
0048-9697
Subject:
deficit irrigation; irrigation requirement; irrigation scheduling,   etc   ; Soil and Water Assessment Tool model; agroclimatology; climatic factors; crop yield; data collection; developing countries; evapotranspiration; irrigated farming; irrigation water; monsoon season; prediction; stream flow; water conservation; watersheds; Chile; Germany; India; Vietnam;     Show all 21 Subjects
Abstract:
... Irrigation water is one of the most substantial water uses worldwide. Thus, global simulation studies about water availability and demand typically include irrigation. Nowadays, regional scale is of major interest for water resources management but irrigation lacks attention in many catchment modelling studies. This study evaluated the performance of the agro-hydrological model SWAT (Soil and Wate ...
DOI:
10.1016/j.scitotenv.2018.08.248

12. Effects of irrigation and fertilization management on reducing nitrogen losses and increasing corn yield under furrow irrigation

Author:
Mohammadi, Adel; Besharat, Sina; Abbasi, Fariborz
Source:
Agricultural water management 2019 v.213 pp. 1116-1129
ISSN:
0378-3774
Subject:
furrow irrigation; irrigation management,   etc   ; fertigation; fertilizers; field experimentation; furrows; grain yield; nitrates; nitrogen; plant density; plant height; planting; seeds;     Show all 13 Subjects
Abstract:
... Furrow irrigation is the most widely used method of irrigation in the world. The main objective of this study was to investigate the simultaneous management of water and fertilizer in furrow irrigation on corn yield and nitrogen losses. Large scale field experiments were performed in 16 treatments included 80 furrows with a length of 190 m and longitudinal slope of 0.004. The main factor included ...
DOI:
10.1016/j.agwat.2018.11.007

13. Simulating the effects of climatic fluctuations on rice irrigation water requirement using AquaCrop

Author:
Pirmoradian, Nader; Davatgar, Naser
Source:
Agricultural water management 2019 v.213 pp. 97-106
ISSN:
0378-3774
Subject:
irrigation requirement; irrigation water,   etc   ; biomass; canopy; drought; evapotranspiration; model validation; models; monitoring; paddies; rice; water requirement; Iran;     Show all 13 Subjects
Abstract:
... Irrigation water requirement is influenced by climatic fluctuations which can be simulated using agro-meteorological models. This study investigates fluctuating irrigation water requirements for rice as affected by drought occurrences. Irrigation requirements were simulated by the AquaCrop model in paddy fields of Guilan in northern Iran. Model validation was done based on field measurements durin ...
DOI:
10.1016/j.agwat.2018.10.003

14. Integrated multi-objective stochastic fuzzy programming and AHP method for agricultural water and land optimization allocation under multiple uncertainties

Author:
Ren, Chongfeng; Li, Zhehao; Zhang, Hongbo
Source:
Journal of cleaner production 2019 v.210 pp. 12-24
ISSN:
0959-6526
Subject:
irrigation scheduling; irrigation water,   etc   ; Cucurbitaceae; case studies; decision making; land resources; models; planning; planting; potatoes; risk; uncertainty; water resources; China;     Show all 14 Subjects
Abstract:
... Optimization allocation of agricultural water and land is a very complex system involves multiple objectives. Moreover, weights of each objective were signed by subjective judgement of decision makers is unreasonable. Furthermore, uncertainties are inevitable in the optimization allocation of irrigation water and land. In order to solve the above problems, this paper developed an improved multi-ob ...
DOI:
10.1016/j.jclepro.2018.10.348

15. Cost-benefit analysis of irrigation modernization in Guadalquivir River Basin

Author:
Borrego-Marín, María M.; Berbel, J.
Source:
Agricultural water management 2019 v.212 pp. 416-423
ISSN:
0378-3774
Subject:
irrigation; irrigation water,   etc   ; aquifers; basins; case studies; cost benefit analysis; modernization; politics; water conservation; water policy; watersheds; Spain;     Show all 12 Subjects
Abstract:
... In water scarce areas, policy makers frequently opt for water conservation and saving technologies (WCSTs) as a measure to ensure resource use sustainability, although this policy is subject to scientific and political debate. This paper presents an application of an integrated methodological approach for analysing the costs and benefits of using WCSTs to achieve water policy objectives. The focus ...
DOI:
10.1016/j.agwat.2018.08.032

16. Fruit growth, yield and oil quality changes induced by deficit irrigation at different stages of olive fruit development

Author:
Gucci, Riccardo; Caruso, Giovanni; Gennai, Clizia; Esposto, Sonia; Urbani, Stefania; Servili, Maurizio
Source:
Agricultural water management 2019 v.212 pp. 88-98
ISSN:
0378-3774
Subject:
deficit irrigation; irrigation rates,   etc   ; endocarp; fruit set; fruit yield; oleuropein; olive oil; olives; orchards; phenology; trees; verbascoside; water stress;     Show all 13 Subjects
Abstract:
... Experiments were performed in a high-density olive orchard to compare the effect of regulated deficit irrigation (RDI) at two different phenological stages with fully-irrigated trees (FI) over two years. Stress was imposed either prior to pit hardening (RDI 1) or after endocarp sclerification during the initial phase of oil accumulation (RDI 2). Fully irrigated trees received 2277 and 1648 m³ ha⁻¹ ...
DOI:
10.1016/j.agwat.2018.08.022

17. Short-term forecasting of daily reference evapotranspiration using the reduced-set Penman-Monteith model and public weather forecasts

Author:
Yang, Yang; Cui, Yuanlai; Bai, Kaihua; Luo, Tongyuan; Dai, Junfeng; Wang, Weiguang; Luo, Yufeng
Source:
Agricultural water management 2019 v.211 pp. 70-80
ISSN:
0378-3774
Subject:
irrigation management; irrigation water,   etc   ; empirical models; evapotranspiration; prediction; semiarid zones; temperature; weather forecasting; weather stations; wind speed; China;     Show all 11 Subjects
Abstract:
... Farm irrigation management and real-time irrigation decisions are based on a series of parameters including irrigation water demand predictions which estimated by the short-term daily reference evapotranspiration (ETo). Based on the temperature data, a simplest empirical model called the temperature-based method, was developed to forecast near-future ETo. Although temperature is one of the most in ...
DOI:
10.1016/j.agwat.2018.09.036

18. Encounter probability analysis of irrigation water and reference crop evapotranspiration in irrigation district

Author:
Zhang, Jinping; Li, Jiayi; Shi, Xixi
Source:
Vodohospodársky časopis 2018 v.66 no.3 pp. 279-284
ISSN:
0042-790X
Subject:
irrigation rates; irrigation water,   etc   ; evapotranspiration; probability; probability distribution;     Show all 5 Subjects
Abstract:
... Based on the data series of the annual reference crop evapotranspiration (ET₀) and the amount of irrigation water (IR) from 1970 to 2013 in the Luhun irrigation district, the joint probability distribution of ET₀ and IR is established using the Gumbel-Hougaard copula function. Subsequently, the joint probability, the conditional joint probability, and the conditional return period of rich−poor enc ...
DOI:
10.2478/johh-2018-0015

19. Water management assessment in a historic garden: the case study of the Real Alcazar (Seville, Spain)

Author:
Pérez-Urrestarazu, Luis; Egea, Gregorio; Ruiz-Alcalá, Cecilia; Roldán-Olmo, Fuensanta; Fernández-Cañero, Rafael
Source:
Urban forestry & urban greening 2018 v.29 pp. 192-199
ISSN:
1618-8667
Subject:
irrigation rates; irrigation scheduling; irrigation systems,   etc   ; case studies; gardens; irrigated farming; irrigation water; landscapes; meters (equipment); summer; water requirement; Spain;     Show all 12 Subjects
Abstract:
... Irrigation plays a very important role in a Mediterranean garden. In spite of this, there are not many studies assessing irrigation water management of landscapes. Moreover, historic gardens represent a special challenge due to their unique characteristics. The aim of this work is the characterization and evaluation of water management in a historic garden. For that, the gardens of The Real Alcaza ...
DOI:
10.1016/j.ufug.2017.11.020

20. Irrigation ponds in the past, present, and future: A case study of the Higashi Harima Region, Hyogo Prefecture, Japan

Author:
Oda, Tetsuya; Moriwaki, Kaoru; Tanigaki, Kazuhiko; Nomura, Yoshikazu; Sumi, Tetsuya
Source:
Journal of hydro-environment research 2018
ISSN:
1570-6443
Subject:
irrigation,   etc   ; case studies; ponds; Japan;     Show all 4 Subjects
Abstract:
... Approximately 190,000 irrigation ponds are distributed locally in Japan. In Hyogo Prefecture, the number of irrigation ponds as of April 2015 was 38,234. Within this prefecture, the Higashi Harima region is one of the most prominent areas in terms of irrigation pond density. Therefore, we focus our present study on this region. More specifically, in this paper, we review the historical background ...
DOI:
10.1016/j.jher.2018.11.004