Irrigation water intensity and climate variability: an agricultural crops analysis of Italian regions

2021 ◽  
Author(s):  
Sabrina Auci ◽  
Donatella Vignani
Keyword(s):  
Climate Variability ◽  
Irrigation Water ◽  
Agricultural Crops ◽  
Italian Regions ◽  
Water Intensity

scholarly journals Exploration of physico-chemical parameters and ionic constituents from groundwater used in irrigation of Tangail district, Bangladesh

2016 ◽  
Vol 3 (1) ◽  
pp. 115-119
Author(s):  
Elina Aziz ◽  
Md Younus Mia ◽  
Nowara Tamanna Meghla
Keyword(s):  
Trace Metal ◽  
Irrigation Water ◽  
Agricultural Crops ◽  
Soil Ecosystem ◽  
Long Term Effects ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Fe And Mn

The study was conducted for exploration of physico-chemical parameters and ionic constituents of groundwater used in irrigation of four upazilas namely Tangail Sadar, Kalihati, Delduar and Nagarpur upazila of Tangail district during the months of March, April and May of 2015. The physico-chemical parameters (pH, EC and TDS), ionic constituents (Ca2+, Mg2+, Na+, K+, Cl-, CO32-, HCO3-, PO43- and SO42-) and trace metal (Fe and Mn) were analyzed to assess the quality of irrigation in relation to soil properties and crop growth. The pH of groundwater indicates slightly alkaline in nature. As regards to EC the groundwater was in ‘good’ class and medium salinity hazards in quality for irrigation and the concentration of TDS indicates water as fresh water. The concentration of Ca2+, Mg2+, Na+, K+, Cl-, CO32-, HCO3-, PO43- and SO42- of groundwater were recorded within the permissible limit for irrigation and these ions might not create hazardous impact on soil ecosystem for growing crops. The trace amount of Fe and Mn was detected in irrigation water. In the study area, the groundwater was within the recommended limit and would not create problem for irrigation and that have not long term effects on irrigating agricultural crops which could be safely used for irrigation purposes.Res. Agric., Livest. Fish.3(1): 115-119, April 2016

Irrigation water demand sensitivity to climate variability across the Contiguous United States

2020 ◽  
Author(s):  
Wanshu Nie ◽  
Benjamin F. Zaitchik ◽  
Matthew Rodell ◽  
Sujay V. Kumar ◽  
Kristi R. Arsenault ◽  
...  
Keyword(s):  
United States ◽  
Climate Variability ◽  
Irrigation Water ◽  
Water Demand ◽  
Irrigation Water Demand ◽  
Demand Sensitivity

scholarly journals Groundwater Quality Assessment for Irrigation: Case Study in the Blinaja River Basin, Kosovo

2021 ◽  
Vol 7 (9) ◽  
pp. 1515-1528
Author(s):  
Hazir S. Çadraku
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Irrigation Water ◽  
Water Samples ◽  
Agricultural Crops ◽  
Irrigation Water Quality ◽  
Quality Of Water ◽  
Kelly’S Ratio

Groundwater is an important source for a drink and irrigation in the Blinaja river basin. Understanding knowledge of irrigation water quality is critical to the management of water for long-term productivity. Historically for this study area there is no data and information regarding the quality and use of water for irrigation needs. Therefore, there was a need to assess water quality based on data analysed from eight sampling points. The purpose of this paper is to evaluate, relying on analytical results, the quality of groundwater in the Blinaja river basin for the purpose of its use for irrigation of agricultural crops. For this purpose, in the Blinaja River Basin in different months during 2015, 2016, 2018 and 2019, 28 water samples were taken to assess the quality of groundwater for irrigation. Water samples were analysed in a laboratory for some of the key quality indicators; pH, EC, hardness (TH), Ca, Mg, Na, K, HCO3, SO4, Cl, etc. and then irrigation water quality indices were calculated such as: percentage of Na (% Na), SAR (Sodium Adsorption Ratio), PI (Permeability index), KR (Kelly's ratio), etc. The overall objective of this study was to assess the quality of water to be used by the inhabitants of the area for irrigation of agricultural crops. Analytical procedures for the laboratory determinations of water quality have been given in several publications (USDA Handbook 60 by Richards, 1954; FAO Soils Bulletin 10 by Dewis and Freitas1970; APHA 2005). Doi: 10.28991/cej-2021-03091740 Full Text: PDF

scholarly journals Signatures of human intervention – or not? Downstream intensification of hydrological drought along a large Central Asian River: the individual roles of climate variability and land use change

2020 ◽  
Author(s):  
Artemis Roodari ◽  
Markus Hrachowitz ◽  
Farzad Hassanpour ◽  
Mostafa Yaghoobzadeh
Keyword(s):  
Water Balance ◽  
Climate Variability ◽  
River Basin ◽  
Irrigation Water ◽  
Hydrological Drought ◽  
Human Intervention ◽  
Study Region ◽  
Drought Characteristics ◽  
A Minor ◽  
Hydrological Droughts

Abstract. The transboundary Helmand River basin is the main drainage system for large parts of Afghanistan and the Sistan region of Iran. Due to the reliance of this arid region on water from the Helmand River, a better understanding of hydrological drought pattern and the underlying drivers in the region are critically required for an effective management of the available water. The objective of this paper is therefore to analyse and quantify spatio-temporal pattern of drought and the underlying processes in the study region. More specifically we test for the Helmand River Basin the following hypotheses for the 1970–2006 period: (1) drought characteristics, including frequency and severity systematically changed over the study period, (2) the spatial pattern and processes of drought propagation through the Helmand River Basin also changed and (3) the relative roles of climate variability and human influence on changes in hydrological droughts can be quantified. It was found that drought characteristics varied throughout the study period, but did largely show no systematic trends. The same was observed for the time series of drought indices SPI and SPEI, which exhibited considerable spatial coherence and synchronicity throughout the basin indicating that, overall, droughts similarly affect the entire HRB with little regional or local differences. In contrast, analysis of SDI exhibited significant negative trends in the lower parts of the basin, indicating an intensification of hydrological droughts. It could be shown that with a mean annual precipitation of ~250 mm y-1, streamflow deficits and thus hydrological drought throughout the HRB are largely controlled by precipitation deficits, whose annual anomalies on average account for ±50 mm y-1 or ~20 % of the water balance of the HRB, while anomalies of total evaporative fluxes on average only account for ±20 mm y-1. The two reservoirs in the HRB only played a minor role for the downstream propagation of streamflow deficits, as indicated by the mean difference between inflow and outflow during drought periods which did not exceed ~0.5 % of the water balance of the HRB. Irrigation water abstraction had a similarly limited effect on the magnitude of streamflow deficits, accounting for ~10 % of the water balance of the HRB. However, the downstream parts of the HRB moderated the further propagation of streamflow deficits and associated droughts in the early decades of the study period. This drought moderation function of the lower basin was gradually and systematically inverted by the end of the study period, when the lower basin eventually amplified the downstream propagation of flow deficits and droughts. This shift from drought moderation to drought amplification in the lower basin is likely a consequence of increased agricultural activity and the associated increases in irrigation water demand from ~13 mm y-1 at the beginning of the study period to ~23 mm y-1 at the end and thus in spite of being only a minor fraction of the water balance. Overall the results of this study illustrate that flow deficits and the associated droughts in the HRB clearly reflect the dynamic interplay between temporally varying regional differences in hydro-meteorological variables together with subtle and temporally varying effects linked to direct human intervention.

scholarly journals Model Indeks Kualitas Air Tanah sebagai Dasar Penentuan Alternatif Jenis Tanaman Pertanian pada Lahan Irigasi Air Tanah di Kabupaten Mojokerto

2020 ◽  
Vol 8 (1) ◽  
pp. 1-14
Author(s):  
Hari Siswoyo ◽  
Pitojo Tri Juwono ◽  
Mohammad Taufiq
Keyword(s):  
Groundwater Quality ◽  
Irrigation Water ◽  
Economic Value ◽  
Local Area ◽  
Groundwater Potential ◽  
Agricultural Crops ◽  
Groundwater Irrigation ◽  
Index Value

The utilization of groundwater potential for irrigation has consequence for the high operational and maintenance costs of groundwater irrigation systems. One solution to these problems is the selection of high economic value crop types cultivated in groundwater irrigation lands. This study aims to determinate the alternative of types of agricultural crops that can be cultivated on groundwater irrigation land based on the quality of groundwater used as irrigation water based on the procedure: determination of groundwater quality index for irrigation, determination of types of agricultural crops based on criteria for tolerance to salt, adjustment of types of crop that have been determined with the criteria of high economic value crops, and adjustment to the types of crops that have been commonly cultivated by farmers in the local area. This procedure can be used as a solution to the absence of guidelines that can be used to determine alternative of types of agricultural plants on groundwater irrigation land. The results of this research showed the potential of ground water used as a source of irrigation water in the study site was dominated by groundwater with an index value of 70-85, where agricultural crops that could be recommended for planting were tolerant crops, moderately tolerant crops, and moderately sensitive crops to salt. The index value of groundwater quality for irrigation was mapped so obtained that zoning model of groundwater quality for irrigation and its suitability for the type of agricultural crops that can be cultivated.

scholarly journals Rice Cultivation Technology at Low-Pressure Drop Irrigation in the Conditions of Kyzylorda Region

2021 ◽  
pp. 49-56
Author(s):  
Gulzinat Aldambergenova ◽  
◽  
Asylkhan Shomantaev ◽  
Mustafa Mustafayev ◽  
◽  
...  
Keyword(s):  
Irrigation Water ◽  
Drip Irrigation ◽  
Oryza Sativa L ◽  
Low Pressure ◽  
Rice Cultivation ◽  
Food Culture ◽  
Vegetable Production ◽  
Agricultural Crops ◽  
Irrigation Method ◽  
Wide Range

The article explores the method of drip irrigation of agricultural crops, which provides a high coefficient of irrigation water (80–95%) and land (95%) use. This method helps to significantly save irrigation water by reducing losses for evaporation and filtration outside the root system zone, which eliminates surface runoff, unevenness of irrigation and creates the ability to maximize the use of irrigated areas for agricultural crops. The use of drip irrigation in vegetable production in the south of Kazakhstan since 2000 has radically changed the approach to the “water – soil – plant” complex. The authors believe that a metered feeding regimen would form a new approach to irrigation of agricultural crops, such as rice. Rice (Oryza sativa L.) as a food culture serves as one of the products consumed in food. It is grown in 120 countries on the area of more than 165 million hectares. Rice, unlike other agricultural crops, has a high biological plasticity and adaptive ability, which in modern agriculture allows it to be cultivated in a wide range of climatic conditions and irrigation methods, such as flooding, periodic irrigation and dry conditions. In world practice a continuous flooding of checks was the most widespread method of watering. This technology consumes about 50% of the total volume of irrigation water or 30% of the world’s fresh water reserves. The irrigation rate of rice cultivated with the use of this technology is in the range of 20–25 thousand m3/ha, which significantly exceeds the biological water consumption of rice agrocenosis. A significant part of the irrigation water is lost for filtration, discharges and lateral outflows. Currently, the use of drip irrigation method in rice fields is poorly studied. The research is aimed at substantiating the technology of rice cultivation using a low-pressure drip irrigation method in the conditions of Kyzylorda region

ИСПОЛЬЗОВАНИЕ ВОДНЫХ РЕСУРСОВ БАССЕЙНА Р. КУБАНЬ ДЛЯ ОРОШЕНИЯ СЕЛЬСКОХОЗЯЙСТВЕННЫХ ЗЕМЕЛЬ

2020 ◽  
pp. 6
Author(s):  
E.V. Fedotova
Keyword(s):  
Water Supply ◽  
Water Use ◽  
Irrigation Water ◽  
Water Demand ◽  
Water Sources ◽  
Climatic Conditions ◽  
Agricultural Crops ◽  
Irrigation Water Demand ◽  
Pumping Stations ◽  
The Republic

В данной статье приведен перечень водоисточников каналов и насосных станций, плановые показатели забора воды и водоподачи в Карачаево-Черкесской республике, Республике Адыгее и Краснодарском крае. Рассмотрены значения водопотребности для орошения сельскохозяйственных культур для природно-климатических условий Краснодарского края, Республики Адыгея, Республики Карачаево-Черкессия. Проанализированы показатели плана водопользования и поливов сельскохозяйственных культур на орошаемых землях.This article provides channels water sources and pumping stations list, planned water intake and water supply indicators in the Karachay-Cherkess Republic, the Republic of Adygea and the Krasnodar territory. Considered the values of agricultural crops irrigation water demand for natural and climatic conditions of the Krasnodar territory, the Republic of Adygea, the Republic of Karachay-Cherkess. Analyzed the water use and irrigation plan indicators of the agricultural crops on irrigated lands.

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