نتایج جستجو برای: irrigation water demand

تعداد نتایج: 713029  

ژورنال: سلامت و محیط زیست 2014
بانژاد, حسین, دشتی, فرشاد, زارعی, عطیه, صفریسنجانی, علی اکبر,

Background and Objectives: Reuse of treated wastewater in agriculture is becoming more attractive due to the growing demand for water, particularly in arid and semi-arid regions like Iran.In some areas, industrial wastewaters distribute arsenic in the water and vegetables, among the other plants, are mainly irrigated by municipal and industrial wastewater. This study aimed to evaluate the outco...

2016
Mubshar Hussain Shahid Farooq Khawar Jabran Muhammad Ijaz Abdul Sattar Waseem Hassan

A decrease in water resources around the globe in irrigated agriculture has resulted in a steep decline in irrigation water availability. Therefore, management options for efficient use of available irrigation water are inevitable. Deciding the critical time, frequency and amount of irrigation are compulsory to achieve higher crop outputs. Hence, this two-year field study was conducted to asses...

Journal: :ISPRS Int. J. Geo-Information 2017
Mohammad Abuzar Des Whitfield Andy McAllister

Pasture performance of 924 dairy farms in a major irrigation district of Australia was investigated for their water use and water productivity during the 2015-2016 summer which was the peak irrigation period. Using satellite images from Landsat-8 and Sentinel-2, estimates of crop coefficient (Kc) were determined on the basis of a strong linear relationship between crop evapotranspiration (ETc) ...

2003
Patricia Imas

Israel is a small country with a total land area of 21,000 km, from which 20% is arable land. More than half of Israel has an arid to semi-arid climate. Approximately half of the cultivated area (200,000 hectares) has to be irrigated due to lack of rainfall and other water resources. Approximately 80% of the irrigated land in Israel uses the fertigation method, combining the application of wate...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Ingjerd Haddeland Jens Heinke Hester Biemans Stephanie Eisner Martina Flörke Naota Hanasaki Markus Konzmann Fulco Ludwig Yoshimitsu Masaki Jacob Schewe Tobias Stacke Zachary D Tessler Yoshihide Wada Dominik Wisser

Humans directly change the dynamics of the water cycle through dams constructed for water storage, and through water withdrawals for industrial, agricultural, or domestic purposes. Climate change is expected to additionally affect water supply and demand. Here, analyses of climate change and direct human impacts on the terrestrial water cycle are presented and compared using a multimodel approa...

Journal: :Computational water energy and environmental engineering 2021

Dabus sub-basin is one of the main tributaries Blue Nile with a considerable surface water potential which can be used for hydro power, irrigation, and supply. Lack studies regarding potential and demands at level reason why this was underutilized. The objective study to assess water potential evaluate current future demand by using Water Evaluation and Planning (WEAP) model sub-basin. wa...

2001
J.-E. BERGEZ

Irrigation scheduling is an important decision problem in agriculture. The purpose of the study presented in this paper is to compare dynamic programming (DP) and reinforcement learning (RL) methods for identifying optimal starting irrigation strategies, when a limited amount of water is available for irrigation. Both of the optimization methods use the MODERATO simulator, which includes a grow...

2015
Athanasios Gertsis Konstantinos Zoukidis Christos Vasilikiotis

Irrigation water quality became worst in terms of increasing its salinity and causes severe problems in many cultivated crop species, resulting in lower yield. In addition, the scarcity of irrigation water due to overuse or runoff is another limitation for increasing food and feed production. Saline water treatment technology offers potential solutions; however this technology is yet expensive ...

2015
Antonio Elia Giulia Conversa

Reduced water availability and environmental pollution caused by nitrogen (N) losses have increased the need for rational management of irrigation and N fertilization in horticultural systems. Decision support systems (DSS) could be powerful tools to assist farmers to improve irrigation and N fertilization efficiency. Currently, fertilization by drip irrigation system (fertigation) is used for ...

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