نتایج جستجو برای: economic water productivity

تعداد نتایج: 917923  

Journal: :international journal of agricultural management and development 2014
mohammad reza bakhshi behnaz nejati mofid shateri

in recent years, farming section of south khorasan province faces different limitations such as increasing shortage of water resources and continuous reduction of weather showers.considering consecutive droughts and water crisis in agricultural plain of the province, it is necessary to use water resources optimally and increase productivity of water shortage input. comparison of water productiv...

Journal: :Water 2022

Increasing productive water use in agriculture is seen as paramount to meet future food demand with limited supplies. The main objective of this paper gain a better understanding the interrelated linkages between crop productivity (CWP) and applied (AWP) affected by irrigation management decisions order assess impact economic decision making on CWP AWP under area-limiting water-limiting conditi...

2017
Manel Ben Hassen Federica Monaco Arianna Facchi Marco Romani Giampiero Valè Guido Sali Michael S. Carolan

Italian rice production is progressively threatened by water scarcity. Some strategies have been developed to reduce water use. Nevertheless, reducing water irrigation amounts may lower paddy rice production. This publication compares the productivity and the economic performances of traditional and modern rice varieties in northern Italy using two different water management systems. The object...

Journal: :iran agricultural research 2015
m. m. moghimi a. r. sepaskhah

abstract- efficient use of irrigation water for summer crops should be considered seriously due to rare occurrence of precipitation in summer. this research was focused on the assessment of water use efficiency for dominant crops of summer cropping pattern in the study area (i.e., maize and rice) via considering water productivity (wp) with different water management scenarios at farm level at ...

In this study, a model was developed to determine the optimal irrigation schedule for the Qazvin Plain in such a way that economic productivity is maximized with the amount of water available and the area under cultivation. The AquaCrop plant growth model was used to determine crop performance in different irrigation programs. The plant growth model was connected to the MATLAB programming envir...

ژورنال: علوم آب و خاک 2022

Due to limited access to water, it is necessary to determine the comparative advantage of crops and horticultural products in different parts of the province and identify products that lack the desired productivity. Then, find ways to improve water productivity or replace products with higher comparative advantage with low-yield products. Based on this, the crop and economic productivity index ...

2008
M. Dinesh Kumar Ajaya Kumar Malla Sushanta Kumar Tripathy

If the balance between availability and requirement drives the value, then the economic value of water in agriculture should be remarkably higher in water-scarce regions when compared to water-rich regions. Similarly, in water-abundant regions, if the land is scarce, then the incremental return per unit of land should be higher than that in land-rich region that are water-scarce. These hypothes...

2005
Barbara van Koppen Constantina Safilios-Rothschild

/ irrigation / poverty / water management / investments / water development / productivity / cropping systems / gender / labor / economic growth / land productivity / Africa South of Sahara / IWMI receives its principal funding from 58 governments, private foundations and international and regional organizations known as the Consultative Group on International Agricultural Research (CGIAR). Sup...

Journal: :تحقیقات اقتصادی 0
غلامعلی شرزه ای دانشیار دانشکده ی اقتصاد دانشگاه تهران سمیه امیرتیموری دانشجوی دکتری اقتصادکشاورزی دانشگاه تربیت مدرس

due to contiguous city of ravar with lut and dasht-e kavir desert, and weather conditions, water is one of the rarest agricultural inputs in this city. pistachio allocates 90% of garden and 73% of agricultural lands of the city and it is the most important agricultural product in this region. a major source of agricultural water supply in this area is groundwater. low price of water on one side...

2010
A. Montazar

The great challenge of the agricultural sector is to produce more crop from less water, which can be achieved by increasing crop water productivity. The modernization of the irrigation systems offers a number of possibilities to expand the economic productivity of water and improve the virtual water status. The objective of the present study is to assess the global water productivity (GWP) with...

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