Irrigation and Drainage最新文献

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The effects of improved subsurface drainage on runoff and nitrogen leaching from a clayey field section 改进地下排水系统对粘土地段径流和氮沥滤的影响
IF 1.6 4区 农林科学
Irrigation and Drainage Pub Date : 2024-04-26 DOI: 10.1002/ird.2965
Vilma Jokinen, Heidi Salo, Minna Mäkelä, Jyrki Nurminen, Helena Äijö, Hanne Laine-Kaulio, Merja Myllys, Harri Koivusalo
{"title":"The effects of improved subsurface drainage on runoff and nitrogen leaching from a clayey field section","authors":"Vilma Jokinen,&nbsp;Heidi Salo,&nbsp;Minna Mäkelä,&nbsp;Jyrki Nurminen,&nbsp;Helena Äijö,&nbsp;Hanne Laine-Kaulio,&nbsp;Merja Myllys,&nbsp;Harri Koivusalo","doi":"10.1002/ird.2965","DOIUrl":"https://doi.org/10.1002/ird.2965","url":null,"abstract":"<p>The aim of this study was to investigate the effects of improved subsurface drainage installation on nitrogen (N) loss in drain discharge (DD) and topsoil layer runoff (TLR). Data on DD and TLR, as well as on concentrations of total, nitrate and ammonium N in the runoff components, were collected from four sections of an experimental field in southern Finland (June 2007–December 2018). Supplementary drains were installed in one of the field sections in June 2014, and the data from that section were compared with those from three reference sections. Differences between the sections were statistically analysed based on annual and monthly values of runoff components and concentrations, as well as the loads of N fractions. The results revealed that improved drainage increased the N load in the DD, reducing the load in the TLR. Changes in N loads were more clearly driven by changes in the runoff volumes rather than by changes in the N concentrations in the runoff waters. Before the drainage improvement, most of the total N load was nitrate (53%), while the share of rest N (fraction of the total N after the mineral N fractions were subtracted) was 45%. After improved drainage, the percentages of nitrate and rest N were 73 and 26%, respectively. The results demonstrate the importance of agricultural water management as the key driver for controlling nutrient loads.</p>","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 4","pages":"1408-1423"},"PeriodicalIF":1.6,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ird.2965","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evapotranspiration and crop coefficient of ‘Kent’ mango in an important fruit-growing hub in Brazil 巴西重要水果种植中心 "肯特 "芒果的蒸散量和作物系数
IF 1.6 4区 农林科学
Irrigation and Drainage Pub Date : 2024-04-18 DOI: 10.1002/ird.2962
Marcelo José da Silva, Magna Soelma Beserra de Moura, Herica Fernanda de Sousa Carvalho, Cloves Vilas Boas dos Santos, Mário de Miranda Villas Boas Ramos Leitão, Luis Fernando de Souza Magno Campeche, Thieres George Freire da Silva
{"title":"Evapotranspiration and crop coefficient of ‘Kent’ mango in an important fruit-growing hub in Brazil","authors":"Marcelo José da Silva,&nbsp;Magna Soelma Beserra de Moura,&nbsp;Herica Fernanda de Sousa Carvalho,&nbsp;Cloves Vilas Boas dos Santos,&nbsp;Mário de Miranda Villas Boas Ramos Leitão,&nbsp;Luis Fernando de Souza Magno Campeche,&nbsp;Thieres George Freire da Silva","doi":"10.1002/ird.2962","DOIUrl":"10.1002/ird.2962","url":null,"abstract":"<p>The ‘Kent’ mango is one of the main cultivars produced in the São Francisco valley. However, due to a lack of data, water management was carried out using coefficients from the Tommy Atkins cultivar. Thus, aiming to achieve greater water management efficiency, the aim of this study was to evaluate the growth, radiation and energy balance, evapotranspiration and coefficients of the ‘Kent’ mango in the lower-middle São Francisco valley in Brazil. The study was conducted in an orchard over two harvests between 2017 and 2018. The radiation and energy balance, evapotranspiration (ET<sub>c</sub>) and crop coefficients (<i>K</i><sub>c</sub>) of the mango were estimated from micrometeorological data. The mean reference evapotranspiration (ET<sub>0</sub>) and ET<sub>c</sub> values were 5.47 and 4.40 mm day<sup>−1</sup> (vegetative growth, VG), 4.42 and 4.29 mm day<sup>−1</sup> (floral induction, FI), 4.08 and 3.48 mm day<sup>−1</sup> (floral induction + flowering, FI + FL), 4.51 and 3.63 mm day<sup>−1</sup> (fruit drop, FD) and 6.09 and 4.46 mm day<sup>−1</sup> (formation fruit + maturation fruit phase, FF + MF). Under the climate conditions of the São Francisco valley, <i>K</i><sub>c</sub> values of 0.80, 0.97, 0.85, 0.80 and 0.74 are recommended for the ‘Kent’ mango during the VG, FI, FI + FL, FD and FF + MF phases, respectively.</p>","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 4","pages":"1391-1407"},"PeriodicalIF":1.6,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140689064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intelligent decision-making for fertigation treatment of tomatoes cultivated in greenhouse: An experimental study 温室番茄施肥处理的智能决策:实验研究
IF 1.6 4区 农林科学
Irrigation and Drainage Pub Date : 2024-04-17 DOI: 10.1002/ird.2957
Yonglin Li, Yaqi Hu, Ziming Li, Wenyong Wu, Meng Ma, Aike Guo
{"title":"Intelligent decision-making for fertigation treatment of tomatoes cultivated in greenhouse: An experimental study","authors":"Yonglin Li,&nbsp;Yaqi Hu,&nbsp;Ziming Li,&nbsp;Wenyong Wu,&nbsp;Meng Ma,&nbsp;Aike Guo","doi":"10.1002/ird.2957","DOIUrl":"10.1002/ird.2957","url":null,"abstract":"<p>To verify the effectiveness of the intelligent decision method for fertigation, an automatic control system for fertigation in greenhouses was designed, and three intelligent decision methods based on evapotranspiration (T1), soil moisture (T2) and accumulated temperature (T3) were tested. Intelligent decisions included monitoring meteorological information, automatically monitoring soil moisture, utilizing fertigation application systems and using automated control modules. The system was stable and accurately controlled according to the decision scheme. The results showed that the average errors of the automated control system for decision-making and irrigation were 1.1 and 0.8%, respectively. The study findings serve as a reference for the integration of intelligent irrigation decision-making and control systems and for further improving the efficiency of water and fertilizer utilized. Compared with those of the control, the three intelligent decision-making methods increased the tomato yield by 8, 12 and 7%, respectively. In addition, the irrigation water and fertilizer levels decreased significantly compared with those in the control treatment. Although the accuracy of the soil water content (SWC) estimated based on ET and temperature in irrigation decision-making is low, the general trend is consistent with practice. In addition, the irrigation water use efficiency (IWUE) and partial factor productivity of fertilizer (PFP) were significantly improved. Similarly, the IWUE in T1 was the highest (60 kg m⁻<sup>3</sup>), and the PFP in T3 was the highest (669 kg kg⁻¹).</p>","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 4","pages":"1246-1261"},"PeriodicalIF":1.6,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140694147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On-farm performance evaluation of small-scale irrigation schemes in the Ethiopian Rift Valley: Internal and external performance process approach 埃塞俄比亚裂谷小型灌溉计划的农场绩效评估:内部和外部绩效过程方法
IF 1.6 4区 农林科学
Irrigation and Drainage Pub Date : 2024-04-17 DOI: 10.1002/ird.2960
Kedrala Wabela, Ali Hammani, Abdelilah Taky, Sirak Tekleab
{"title":"On-farm performance evaluation of small-scale irrigation schemes in the Ethiopian Rift Valley: Internal and external performance process approach","authors":"Kedrala Wabela,&nbsp;Ali Hammani,&nbsp;Abdelilah Taky,&nbsp;Sirak Tekleab","doi":"10.1002/ird.2960","DOIUrl":"10.1002/ird.2960","url":null,"abstract":"&lt;p&gt;This study evaluated the on-farm performance of two small-scale irrigation schemes, Furfuro and Bedene Alemtena (hereafter referred to as Bedene), in the Ethiopian Rift Valley. Two sets of performance indicator parameters were used. The first group was internal performance indicators, which included conveyance, water application and application uniformity. The water flow velocity through canals was monitored using the floating method. The amount of irrigation water applied to the fields was measured using a cutthroat flume. The second group was external performance indicators, including agricultural performance, water use performance and physical sustainability indicators. The results indicated that Furfuro had average conveyance, application and uniformity efficiencies of 84%, 59% and 50%, respectively, while that of Bedene were 79%, 63% and 55%, respectively. The overall efficiencies for both schemes were about 49%, which is lower than the minimum permissible values. The outputs per irrigation supply and consumed water for Furfuro were 0.14 and 0.16 US$/m&lt;sup&gt;3&lt;/sup&gt;, respectively, and they were 0.11 US$/m&lt;sup&gt;3&lt;/sup&gt; for Bedene. The relative irrigation and total water supply of Furfuro were 1.21 and 1.20, respectively, indicating the presence of excess water in the command area during the study season. The relative irrigation and water supply of Bedene was 0.81, which indicated that the scheme was water deficient. Irrigation water management practices need improvement in the two schemes.&lt;/p&gt;&lt;p&gt;L'objet de la présente étude est d'évaluer les performances de deux petits périmètres d'irrigation dans la vallée du Rift éthiopien, Furfuro et Bedene Alemtena (ci-après dénommé Bedene). Deux groupes d'indicateurs de performance ont été utilisés. Le premier groupe comprend des indicateurs internes (efficiences de transport, d'application et de distribution de l'eau). La vitesse d'écoulement de l'eau dans les canaux a été mesurée par la méthode flotteur. L'eau d'irrigation appliquée dans les champs a été mesurée à l'aide d'un parshal. Le second groupe comprend des indicateurs externes (performances agronomiques, efficience d'utilisation de l'eau et les indicateurs de durabilité physique). Les résultats ont révélé que Furfuro a des des efficiences de transport moyennes, d'application et de distribution de 84%, 59% et 50% respectivement, tandis que Bedene a des efficiences de 79%, 63% et 55% respectivement. L'efficience globale des deux périmètres est d'environ 49%, ce qui est inférieur aux valeurs minimales admissibles. Les productivités par volume d'eau d'irrigation fourni et volume consommé pour Furfuro sont respectivement de 0.14 et 0.16 $/m3. Cette productivité est de 0.11 $/m3 pour Bedene. Les taux de satisfaction des besoins en eau des cultures et de la demande en eau d'irrigation de Furfuro sont respectivement de 1.21 et 1.20, ce qui montre une sur-irrigation dans ce périmètre pendant la saison d'étude. Les taux de satisfaction des besoins en eau","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 4","pages":"1579-1591"},"PeriodicalIF":1.6,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140690370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A simple method for evaluating the relative water uptake rate of drip-irrigated crops 评估滴灌作物相对吸水率的简单方法
IF 1.6 4区 农林科学
Irrigation and Drainage Pub Date : 2024-04-12 DOI: 10.1002/ird.2956
Shmulik P. Friedman
{"title":"A simple method for evaluating the relative water uptake rate of drip-irrigated crops","authors":"Shmulik P. Friedman","doi":"10.1002/ird.2956","DOIUrl":"10.1002/ird.2956","url":null,"abstract":"<p>Drip irrigation is widely acknowledged for its water use efficiency, yet evaluating relative water uptake rates (RWURs, ratios between the water uptake rates and the irrigation rates) remains pivotal for effective system design and management. This article presents a novel method employing straightforward measurements of wetted soil surfaces around emitters or perpendicular to driplines, both with and without water uptake, emphasizing simplicity and practicality. The proposed method offers valuable insights into agronomic water use efficiency, facilitating the optimization of drip irrigation for both annual and perennial crops. While effective for intensively irrigated crops, the method does have limitations for smaller wetted areas and longer irrigation cycles, depending also upon a reasonable determination of the active root zone depth and the soil capillary length. Despite relying on a simplified water uptake model, the accessibility and cost-effectiveness of the method render it a valuable tool for assessing RWURs in diverse agricultural settings, contributing to the sustainable utilization of water resources in drip irrigation.</p>","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 4","pages":"1231-1245"},"PeriodicalIF":1.6,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ird.2956","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140710638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of lateral spacings and irrigation water quality on plant growth and yield parameters of onion in the semi-arid region of India 侧向间距和灌溉水质对印度半干旱地区洋葱植物生长和产量参数的影响
IF 1.6 4区 农林科学
Irrigation and Drainage Pub Date : 2024-04-12 DOI: 10.1002/ird.2963
Mukesh Kumar, Ram Naresh, Darshana Duhan, Kuldeep Singh, Mukesh Kumar Mehla, Raj Kumar Jhorar
{"title":"Effects of lateral spacings and irrigation water quality on plant growth and yield parameters of onion in the semi-arid region of India","authors":"Mukesh Kumar,&nbsp;Ram Naresh,&nbsp;Darshana Duhan,&nbsp;Kuldeep Singh,&nbsp;Mukesh Kumar Mehla,&nbsp;Raj Kumar Jhorar","doi":"10.1002/ird.2963","DOIUrl":"10.1002/ird.2963","url":null,"abstract":"&lt;p&gt;Field experiments were conducted to investigate an appropriate saline water management strategy to enhance the yield and irrigation water use efficiency (IWUE) of drip-irrigated onion. The effects on soil water–salt dynamics, growth parameters, IWUE and yield were assessed under different lateral spacings and irrigation treatments. The different treatments comprised two lateral spacings (45 and 60 cm) and four irrigation treatments (canal water, C; conjunctive use of canal and saline water in a 1:1 ratio, C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;1&lt;/sub&gt;; in a 1:2 ratio, C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;2&lt;/sub&gt;; and saline water, S). The results show that soil moisture content decreased vertically downwards and radially outwards in all treatments, whereas soil salinity increased and decreased with increasing radial distance and soil depth, respectively, throughout the soil profile irrespective of the lateral spacing and irrigation treatments. The maximum yield and IWUE were observed at 45-cm lateral spacing for treatment C, followed by C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;1&lt;/sub&gt;, C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;2&lt;/sub&gt; and S. It was concluded that the C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;1&lt;/sub&gt; treatment can be employed successfully for onion cultivation in sandy loam soil without any significant reduction in yield. The present study highlights the significance of irrigation treatments and lateral spacing for maximum production, which may be used as a baseline/guideline to increase the income of onion growers/farmers in semi-arid regions.&lt;/p&gt;&lt;p&gt;Des expériences menées sur le terrain étudient une stratégie appropriée de la gestion de l'eau saline afin d'améliorer le rendement et l'efficacité de l'utilisation de l'eau d'irrigation (IWUE) d'oignons irrigués au goutte à goutte. Les effets sur la dynamique de l'eau et des sels du sol, les paramètres de croissance, l'IWUE et le rendement ont été évalués dans le cadre de différents espacements latéraux et traitements d'irrigation. Les différents traitements comprenaient deux espacements latéraux (45 et 60 cm) et quatre traitements d'irrigation (eau de canal, C; utilisation conjonctive de l'eau des canaux et de l'eau saline dans un rapport 1:1, C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;1&lt;/sub&gt;; dans un rapport 1:2, C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;2&lt;/sub&gt; et eau saline, S). Les résultats montrent que la teneur en humidité du sol a diminué verticalement vers le bas et radialement vers l'extérieur dans tous les traitements, tandis que la salinité du sol a augmenté et a diminué avec l'augmentation de la distance radiale et de la profondeur du sol, respectivement, dans tout le profil du sol, indépendamment de l'espacement latéral et des traitements d'irrigation. Le rendement maximal et l'IWUE ont été observés à un espacement latéral de 45 cm pour le traitement C, suivi des traitements C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;1&lt;/sub&gt;, C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;2&lt;/sub&gt;, et S. il a été conclu que le traitement C&lt;sub&gt;1&lt;/sub&gt;S&lt;sub&gt;1&lt;/sub&gt; peut être utilisé avec succès pour la culture d'oignons dans des sols sablonneux riche en terreau sans réduction signific","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 4","pages":"1292-1312"},"PeriodicalIF":1.6,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140709763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Groundwater pollution vulnerability assessment using a modified DRASTIC model in Ho Chi Minh City, Vietnam 利用改进的 DRASTIC 模型对越南胡志明市地下水污染脆弱性进行评估
IF 1.6 4区 农林科学
Irrigation and Drainage Pub Date : 2024-04-04 DOI: 10.1002/ird.2953
Au Hai Nguyen, Vy Minh Hong Tat
{"title":"Groundwater pollution vulnerability assessment using a modified DRASTIC model in Ho Chi Minh City, Vietnam","authors":"Au Hai Nguyen,&nbsp;Vy Minh Hong Tat","doi":"10.1002/ird.2953","DOIUrl":"10.1002/ird.2953","url":null,"abstract":"<p>The Pleistocene aquifer serves as a vital water source for various activities in Ho Chi Minh City, Vietnam, including concentrated and individual exploitation. In the present study, the DRASTIC (D, depth of water; R, net recharge; A, aquifer media; S, soil media; T, topography; I, impact of vadose zone; C, hydraulic conductivity) model was used to evaluate the groundwater sensitivity of the study area. To analyse Ho Chi Minh City's Upper-Middle Pleistocene aquifer vulnerability, the analytic hierarchy process (AHP) method was used to optimize the DRASTIC score and include land use (LU) characteristics. Four distinct weights were used: DRASTIC, modified DRASTIC-LU, AHP-DRASTIC and modified AHP-DRASTIC-LU. This study identified low, moderate and high vulnerability for 12%, 55% and 33% of the DRASTIC-LU index values, respectively. The AHP-DRASTIC index classifies 61%, 26% and 13% of sites as low, moderate and highly vulnerable, respectively. The study reveals that 52%, 30% and 18% of the area are vulnerable to the modified AHP-DRASTIC-LU index classes. The most sensitive factors are shallow aquifer roofs, recharge and LU. The real-world accuracy of the DRASTIC models was tested using 106 groundwater nitrate concentrations. The modified AHP-DRASTIC-LU is the most accurate and appropriate model for the current research region.</p>","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 4","pages":"1453-1469"},"PeriodicalIF":1.6,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140743837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of fertilizer injection on the mixing patterns of lateral-move sprinkler irrigation systems with double wings 注入肥料对双翼横向移动喷灌系统混合模式的影响
IF 1.6 4区 农林科学
Irrigation and Drainage Pub Date : 2024-04-03 DOI: 10.1002/ird.2958
Yisheng Zhang, Jie Li, Huiliang Wang
{"title":"The effect of fertilizer injection on the mixing patterns of lateral-move sprinkler irrigation systems with double wings","authors":"Yisheng Zhang,&nbsp;Jie Li,&nbsp;Huiliang Wang","doi":"10.1002/ird.2958","DOIUrl":"10.1002/ird.2958","url":null,"abstract":"<p>In irrigation systems, water–fertilizer mixing within pipelines profoundly affects the fertilization process and strategy development. Taking irrigation machine pipelines as the research object, a numerical simulation method is used to investigate the mixing and distribution patterns of water and fertilizer in pipelines under a steady oscillatory flow fertilization mode with different injection positions, angles, flow rates (<i>Q</i>) and fertilization ratios (<i>δ</i>). Increasing the flow rate initially increased the fertilizer concentration in the lateral pipes, but further increasing the mainline central injection flow rate significantly reduced the concentration in the lateral pipes. For <i>δ</i> = 2%, elevating <i>Q</i> from 6 to 8 m<sup>3</sup>/h increased the average fertilizer concentration in the lateral pipes by 0.4%. However, a subsequent increase to <i>Q</i> = 10 m<sup>3</sup>/h led to a 1% decrease. In left-side injection, lateral pipes on the same side as the injection pipe had considerably higher concentrations than those on the opposite side. In central injection, larger inclination angles increase the lateral pipe fertilizer concentration, while in left-side injection, 60°-downward injection results in the best lateral pipe fertilizer concentration. The above-mentioned results can provide valuable insights for the design of injection ports on lateral-move sprinkler irrigation systems.</p>","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 4","pages":"1313-1328"},"PeriodicalIF":1.6,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140748923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BUILDING CAPACITIES FOR MANAGING AGRICULTURAL WATER UNDER CLIMATE CHANGE 提高在气候变化条件下管理农业用水的能力
IF 1.9 4区 农林科学
Irrigation and Drainage Pub Date : 2024-03-29 DOI: 10.1002/ird.2964
Ashwin B. Pandya
{"title":"BUILDING CAPACITIES FOR MANAGING AGRICULTURAL WATER UNDER CLIMATE CHANGE","authors":"Ashwin B. Pandya","doi":"10.1002/ird.2964","DOIUrl":"10.1002/ird.2964","url":null,"abstract":"","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 2","pages":"794-796"},"PeriodicalIF":1.9,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bibliometric analysis of global climate change and agricultural production: Trends, gaps and future directions 全球气候变化与农业生产的文献计量分析:趋势、差距和未来方向
IF 1.6 4区 农林科学
Irrigation and Drainage Pub Date : 2024-03-28 DOI: 10.1002/ird.2950
Dauda Pius Awhari, Mohamad Hidayat Bin Jamal, Mohd Khairul Idlan Muhammad, Shamsuddin Shahid
{"title":"Bibliometric analysis of global climate change and agricultural production: Trends, gaps and future directions","authors":"Dauda Pius Awhari,&nbsp;Mohamad Hidayat Bin Jamal,&nbsp;Mohd Khairul Idlan Muhammad,&nbsp;Shamsuddin Shahid","doi":"10.1002/ird.2950","DOIUrl":"10.1002/ird.2950","url":null,"abstract":"<p>Climate change poses a significant threat to global food security, and a comprehensive understanding of its impact on agricultural production is needed. We analysed the Scopus data set between 1993 and 2023. China occupies the leading position in terms of climate change production, and the United States occupies the comprehensive strength position with the largest citation strength output. Notably, a substantial 29% annual publication increase between 2000 and 2015 was noted. Despite prevailing research on specific facets, a pronounced gap exists in global-scale studies focusing on the direct impact of climate change on agricultural production and yield, with a predominant concentration in regional analyses. Collaboration in this area continues to occur within developed nations, but the rate of growth at the international level is relatively low. In addition, the frequency of co-occurrence analysis of keywords revealed that climate change and sustainability are the focal keywords, but yield, food security, irrigation and rice production have yet to be identified. The results of this research will help in designing a policy for water resource management for irrigation planning and an adaptative food security management strategy and provide a feature research guide.</p>","PeriodicalId":14848,"journal":{"name":"Irrigation and Drainage","volume":"73 4","pages":"1615-1632"},"PeriodicalIF":1.6,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140373458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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