Agricultural Water Conservation: Tools, Strategies, and Practices
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Water Productivity of Irrigated Agriculture in India Potential areas for improvement
Abstract
The objective of this paper is to estimate water productivity in irrigated agriculture in selected basins in India; and to identify the drivers of change in water productivity in these regions.
Water Productivity of Irrigated Agriculture in India Potential areas for improvement
Abstract
The objective of this paper is to estimate water productivity in irrigated agriculture in selected basins in India; and to identify the drivers of change in water productivity in these regions.
Soil Water and Agronomic Productivity
The need for an efficient use of soil water is.also enhanced by the lack of availability of freshwater
supply for supplemental irrigation. Global water use for agriculture,.as a percentage of the total water
use,was 81.4% in 1900, 72.3% in 1950, 68.2% in 1975, and 56.7% in 2000. Global water use for urban
purposes (km 3/year) was 20 in 1900, 60 in 1950, 150 in 1975, and 440 in 2000. Similarly, global water
use (km 3/year) for industrial purposes was 30 in 1900, 190 in 1950, 630 in 1975, and 1900 in 2000
Availability of water for irrigation is also constrained by the diversion to fossil fuel production
and eutrophication/pollution of water resources. One liter of bioethanol production requires 3500L
of fresh water. Thus, there is a strong and prime need for conserving, recycling, and improving soil-
water resources to meet the food demands of the growing world population.
supply for supplemental irrigation. Global water use for agriculture,.as a percentage of the total water
use,was 81.4% in 1900, 72.3% in 1950, 68.2% in 1975, and 56.7% in 2000. Global water use for urban
purposes (km 3/year) was 20 in 1900, 60 in 1950, 150 in 1975, and 440 in 2000. Similarly, global water
use (km 3/year) for industrial purposes was 30 in 1900, 190 in 1950, 630 in 1975, and 1900 in 2000
Availability of water for irrigation is also constrained by the diversion to fossil fuel production
and eutrophication/pollution of water resources. One liter of bioethanol production requires 3500L
of fresh water. Thus, there is a strong and prime need for conserving, recycling, and improving soil-
water resources to meet the food demands of the growing world population.
Soil Water and Agronomic Productivity
The need for an efficient use of soil water is.also enhanced by the lack of availability of freshwater
supply for supplemental irrigation. Global water use for agriculture,.as a percentage of the total water
use,was 81.4% in 1900, 72.3% in 1950, 68.2% in 1975, and 56.7% in 2000. Global water use for urban
purposes (km 3/year) was 20 in 1900, 60 in 1950, 150 in 1975, and 440 in 2000. Similarly, global water
use (km 3/year) for industrial purposes was 30 in 1900, 190 in 1950, 630 in 1975, and 1900 in 2000
Availability of water for irrigation is also constrained by the diversion to fossil fuel production
and eutrophication/pollution of water resources. One liter of bioethanol production requires 3500L
of fresh water. Thus, there is a strong and prime need for conserving, recycling, and improving soil-
water resources to meet the food demands of the growing world population.
supply for supplemental irrigation. Global water use for agriculture,.as a percentage of the total water
use,was 81.4% in 1900, 72.3% in 1950, 68.2% in 1975, and 56.7% in 2000. Global water use for urban
purposes (km 3/year) was 20 in 1900, 60 in 1950, 150 in 1975, and 440 in 2000. Similarly, global water
use (km 3/year) for industrial purposes was 30 in 1900, 190 in 1950, 630 in 1975, and 1900 in 2000
Availability of water for irrigation is also constrained by the diversion to fossil fuel production
and eutrophication/pollution of water resources. One liter of bioethanol production requires 3500L
of fresh water. Thus, there is a strong and prime need for conserving, recycling, and improving soil-
water resources to meet the food demands of the growing world population.
Soil Hydrology for a Sustainable Land Management
Soil hydrology determines the water–soil–plant interactions in the Earth’s system because porous medium acts as an interface within the atmosphere and lithosphere; regulates main processes such as runoff discharge, aquifer recharge, movement of water, and solutes into the soil; and ultimately the amount of water retained and available for plants growth. Soil hydrology can be strongly affected by land management. Therefore, investigations aimed at assessing the impact of land management changes on soil hydrology are necessary, especially to optimize water resources. This Special Issue collects 12 original contributions addressing the state-of-the-art advances in soil hydrology for sustainable land management.
These contributions cover a wide range of topics including (i) the effects of land use change, (ii) water use efficiency, (iii) erosion risk, (iv) solute transport, and (v) new methods and devices for improved characterization of soil physical and hydraulic properties. They include both field and laboratory experiments as well as modelling studies. Different spatial scales, i.e., from field to regional scales, and a wide range of geographic regions are also covered. The collection of these manuscripts presented in this Special Issue provides a relevant knowledge contribution for effective saving water resources and sustainable land management.
Soil Hydrology for a Sustainable Land Management
Soil hydrology determines the water–soil–plant interactions in the Earth’s system because porous medium acts as an interface within the atmosphere and lithosphere; regulates main processes such as runoff discharge, aquifer recharge, movement of water, and solutes into the soil; and ultimately the amount of water retained and available for plants growth. Soil hydrology can be strongly affected by land management. Therefore, investigations aimed at assessing the impact of land management changes on soil hydrology are necessary, especially to optimize water resources. This Special Issue collects 12 original contributions addressing the state-of-the-art advances in soil hydrology for sustainable land management.
These contributions cover a wide range of topics including (i) the effects of land use change, (ii) water use efficiency, (iii) erosion risk, (iv) solute transport, and (v) new methods and devices for improved characterization of soil physical and hydraulic properties. They include both field and laboratory experiments as well as modelling studies. Different spatial scales, i.e., from field to regional scales, and a wide range of geographic regions are also covered. The collection of these manuscripts presented in this Special Issue provides a relevant knowledge contribution for effective saving water resources and sustainable land management.
Modern Fruit Industry
The effectiveness on several fruits by the application of alternative methods against fungi is summarized in the present chapter. Several investigations have reported the efficacy of these technologies for controlling fungal infections. Currently, high post-harvest loses have been reported due to several factors such as inefficient management, lack of training for farmers, and problems with appropriate conditions for storage of fruits and vegetables. Even now, in many countries, post-harvest disease control is led by the application of chemical fungicides.
Modern Fruit Industry
The effectiveness on several fruits by the application of alternative methods against fungi is summarized in the present chapter. Several investigations have reported the efficacy of these technologies for controlling fungal infections. Currently, high post-harvest loses have been reported due to several factors such as inefficient management, lack of training for farmers, and problems with appropriate conditions for storage of fruits and vegetables. Even now, in many countries, post-harvest disease control is led by the application of chemical fungicides.
Safe Use of Wastewater in Agriculture Good Practice Examples
Abstract
Managed aquifer recharge (MAR) systems such as riverbank iltration and soil-aquifer treatment all involve the use of natural subsurface systems to improve the quality of recharged water (i.e., surface water, storm water, reclaimed water) before reuse (e.g. planned potable reuse). During MAR, water is either iniltrated via basins, subsurface injected or abstracted from wells adjacent to rivers. MAR systems represent an attractive option for augmenting and improving groundwater quality as well as for environmental management purposes. However, reuse systems designed for applications that involve human contact should include redundant barriers for pathogens that cause waterborne diseases. This case covers key aspects of a case study on virus removal at three full-scale MAR systems located in different regions of the United States (Arizona, Colorado, and California). MAR projects may be economically viable for developing countries; however, sustainable management is relevant to successfully maintain the attributes necessary for potable and non-potable water reuse.
Keywords: management, aquifer, recharge, removal, viruses
Safe Use of Wastewater in Agriculture Good Practice Examples
Abstract
Managed aquifer recharge (MAR) systems such as riverbank iltration and soil-aquifer treatment all involve the use of natural subsurface systems to improve the quality of recharged water (i.e., surface water, storm water, reclaimed water) before reuse (e.g. planned potable reuse). During MAR, water is either iniltrated via basins, subsurface injected or abstracted from wells adjacent to rivers. MAR systems represent an attractive option for augmenting and improving groundwater quality as well as for environmental management purposes. However, reuse systems designed for applications that involve human contact should include redundant barriers for pathogens that cause waterborne diseases. This case covers key aspects of a case study on virus removal at three full-scale MAR systems located in different regions of the United States (Arizona, Colorado, and California). MAR projects may be economically viable for developing countries; however, sustainable management is relevant to successfully maintain the attributes necessary for potable and non-potable water reuse.
Keywords: management, aquifer, recharge, removal, viruses
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