Other irrigation water quality problems 26 salinity. Ppt irrigation water quality powerpoint presentation. Water quality for agriculture was first published in 1976 as irrigation and drainage paper 29. It was recommended that drip irrigation would be adopted where groundwater quality is marginal to poor quality to get high crop production and water use efficiency. Water containing a tds level of over 500 mgl is unsuitable for irrigation of many plants and. For example, the physical and mechanical properties of the soil, ex.
Stoner abstract waterquality indices were developed to assess waters for two specific uses public water supply and irrigation. International workshop on irrigation, water quality and environmental flows adelaide, australia, june 2012 this workshop is being organised under the auspices of the international commission for irrigation and drainages icid work group on the use of poor quality water. Water quality criteria for irrigation university of nebraskalincoln. Irrigation water quality problems nc state extension. Both the quality of water for the irrigated crop and the water used to make chemical mixes must be analysed and monitored. Although many of the basic concepts of salinity control and dealing with poor quality water remain the same, new data and experience have prompted us to revise the 1976 paper in. Crops differ in their salt tolerance and respond differently to the quality of water with which they are irrigated. In addition, different crops require different irrigation water qualities. Safe and efficient use of drainage water for growing salt tolerant crop cultivars and tree species. Faust, assistant professor ornamental horticulture and landscape design this publication is one of three in a series that covers the basics of developing a nutritional program for producing containergrown plants in. Oster department of soil and environmental sciences, university of california, riverside, ca 92521, usa accepted 21 april 1994 abstract supplies of good quality irrigation water are expected to decrease in the future because the devel opment. Corrosive irrigation water may lead to an early replacement of the nozzles. Knowing your water quality allows you to plan for water treatments to avoid problems such as poor plant growth, or blocked irrigation. Knowledge of the rate of decrease of nutrients from soils resulting from poor water quality application is essential for longterm planning of crop production while minimizing the impact on groundwater quality.
In the florida keys, good water quality is essential to a healthy marine ecosystem. Cropsyst model can be used as irrigation water management tool to increase wheat productivity with poor quality water. Failure to match the soil with the water and the management type can result in damage to soils and plants. Proper intention should be given to manage poor quality water and. The working group on use of poor quality water wgpqw promotes a safe and good management of poor quality waters for irrigation so as to minimize the negative impact on human health and the environment. Water quality for crop production umass center for. Water quality can range from good to poor, depending upon its composition, and additional inputs to the management program. Irrigation water quality for greenhouse production elizabeth will, graduate student james e. Typically, qualities of irrigation water which deserve consideration include the salt. Quality of irrigation water free download as powerpoint presentation. The soils commonly found in india can be classified as follows i alluvial soils.
The use of water with a high sar value and low to moderate salinity may be hazardous and reduce the soil infiltration rate. High soluble salts in the soil make soil moisture more difficult for plants to extract, and crops. Pdf irrigation with poor quality water researchgate. Among the most important are alkalinity, ph and soluble salts. However other factors such as soil texture, permeability, drainage, type of crop etc. Use of poor quality waters requires three changes from standard irrigation practices.
Seagrass and coral reef communities thrive in clean water that is relatively low in nutrients. The quality of the irrigation water may affect both crop yields and soil physical conditions, even if all other conditions and cultural practices are favorableoptimal. This irrigation water is classified as poor because of the high adj sar of 4. Irrigation water guidelines interpretation of water quality for irrigation purposes is cropspecific. Effects of poor water quality water mission country. Alluvial soils include the deltaic alluvium, calcareous alluvial soils, coastal alluvium, and coastal sands. This soil is classified as sodic with an sar of because of the high adj sar in the water. Poor water quality can also pose a health risk for ecosystems. However, a number of trace elements are found in water which can limit. Knowing your water quality allows you to plan for water treatments to avoid problems such as poor plant growth, blocked irrigation or stock watering pipes, staining and other undesirable effects of poor water quality. Water quality varies greatly depending on the source of the water and the efficiency of the treatment system. Diarrhoeal disease alone amounts to an estimated 4.
Irrigation slide 3 unsustainability of irrigation globally, 71% of withdrawn freshwater is used for irrigation rivers dammed to collect irrigation water people living in areas behind the dams are displaced wildlife habitat destroyed irrigation depletes rivers and aquifers irrigation degrades water, soil, and wildlife habitat. Contact the department of water affairs, your local department of agriculture offices, or universities doing groundwater or irrigation water analysis and other water testing labs. Prweb october 22, 2012 poor quality irrigation water is typically indicated by levels of total dissolved solids tds, electrical conductivity e. Irrigation water quality standards and salinity management. Classification of irrigation water quality oklahoma. Quality of irrigation water and management of saline water for irrigation govardhan lodha enroll.
The main features of the alluvial soils of india are derived from the deposition caused by rivers of the indus, the ganges, and the brahmaputra. Degraded water quality is also decreasing the amount of safe water. Supplies of good quality irrigation water are expected to decrease in the future because the development of new water supplies will not keep pace with the increasing water needs of industries and. The objective of this study was to calibrate cropsyst model for wheat irrigated with fresh and agricultural drainage water. Poor quality irrigation water is generally more concerning as the climate changes from humid to arid conditions. Quality of irrigation water and management of saline water for irrigation introduction the suitability of irrigation water is mainly depends on the amounts and type of salts present in water. Managing irrigation water quality for crop production in the pacific. Irrigation water quality department of primary industries. The group also promotes the multiple use of poor quality water with due consideration to the institutional and legal aspect. This problem is most serious for wells and pumps, but in some areas, a poor quality water may also damage irrigation equipment and canals. A special problem faced by some farmers practising irrigation is deterioration of equipment due to waterinduced corrosion or encrustation.
The quality of irrigation water might affect both crop yields and the physical condition of the soil, even if all other conditions and cultural practices are favorable. Water quality can range from good to poor, depending upon its composition, and additional inputs to the management program may be required to compensate for this impact. Any particular use will have certain requirements for the physical, chemical or. In most irrigation situations, the primary water qual ity concern is salinity levels, since salts can affect both the soil struc ture and crop yield.
The most damaging effects of poorquality irrigation water are excessive accumulation of soluble salts andor sodium in soil. Water management in developing countries policy and. Quality of irrigation water and soil characteristics of. Relatively high sodium or low calcium content of soil or water reduces the rate at which irrigation water enters soil to such an extent that sufficient water cannot. In fact, growing competition for use of limited water supplies has been the impetus for some irrigators to consider using water previously thought to be of only marginal quality and suitability for irrigation. The main soluble constituents are calcium, magnesium, sodium as cations and chloride, sulphate, biocarbonate as anions. Poor water quality can pose a health risk for people. Pdf supplies of good quality irrigation water are expected to decrease in the future because the development of new water supplies will not. Water quality for crop production irrigation water quality is a critical aspect of greenhouse crop production. The amount and characteristics of these dissolved salts depend on the source and. A special problem faced by some farmers practising irrigation is deterioration of equipment due to water induced corrosion or encrustation. Though high turbidity is often a sign of poor water quality and land management, crystal clear water does not always guarantee healthy water. Poor quality of irrigation water affects both soil quality and crop production adversely bello, 2001.
There are many factors which determine water quality. Highly soluble salts in the soil make soil moisture more difficult for plants to extract,and crops become water stressed even when the soil is moist. The fulfilment of poor peoples waterrelated needs is fundamental to the elimination of poverty. Irrigation with water of poor quality that contaminates edible crops with pathogens, or causes salt buildup in the soil. But there are several other factors to consider, such as whether hard water salts such as calcium and magnesium or heavy metals that can clog irrigation systems or. Pnw 597e august 2007 managing irrigation water quality. Farm water quality and treatment nsw department of. Cropsyst model for wheat irrigation water management with. A quick reference guide for irrigation watert parameters useful for agricultural students.
Water management in developing countries policy and priorities for eu development cooperation. Table 10 water quality tests used to predict irrigation water effects on soil structure. However, a number of trace elements are found in water which can limit its use for irrigation. The amount and characteristics of these dissolved salts depend on the source and chemical composition. This is the largest and most important soil group of india. Water quality for agriculture was first published in 1976 as irrigation and. Monitoring longterm effects of drainage water on soil characteristics and. Irrigation water quality the water quality used for irrigation is essential for the yield and quantity of crops, maintenance of soil productivity, and protection of the environment. Use the following information as a guideline to determine if a possible problem exists. Chapter 2 water quality this chapter was prepared by m. The following are the most common problems that result from using poor quality water. Regardless of its source, irrigation water contains some dissolved salts michael, 1985.
Managing irrigation water quality for crop production in the pacific northwest irrigation water analyses the first step in assessing irrigation water is to test the water. Waterquality indices for specific water uses by jerry d. Although past experience with an irrigation water is valuable, a water analysis is essential to prevent irrigationinduced. Salinity is not normally a threat where precipitation.
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