What are the impact of irrigation development?
The potential negative environmental impacts of most large irrigation projects described more in detail below include: waterlogging and salinization of soils, increased incidence of water-borne and water-related diseases, possible negative impacts of dams and reservoirs, problems of resettlement or changes in the …
Why is irrigation important in Zimbabwe?
The government of Zimbabwe’s objective for irrigation development is to guarantee food security through increased crop production (Chazovachii, 2012. (2012). The impact of small scale irrigation schemes on rural livelihoods: The case of Panganai irrigation scheme Bikita District, Zimbabwe.
What impact does irrigation have on the environment?
Excessive irrigation of plants can affect the water quality of natural environments by causing erosion, transporting nutrients pesticides and herbicides, or decreasing the amount of water that flows naturally into streams and rivers.
How does irrigation Impact Africa?
In the most vulnerable parts of Africa, irrigated agriculture also means that farmers can extend the growing season(s), increase productivity and incomes, and improve their livelihoods. But irrigation development must be planned carefully to avoid adverse impacts on the environment and human health.
What are the positive and the negative of impacts of irrigation?
There are many positive impacts of irrigation on the environment. Among the negative impacts which appear in the mentioned spheres prevalent impacts is the danger of waterlogging and salinization of soils and waters, rise in groundwater table, spread of water born diseases, pollution of waters and many others.
How does irrigation affect agriculture?
Water applied as irrigation allows for crop production in arid regions and supplements soil moisture in humid regions when growing season precipitation is insufficient. Irrigation has enhanced both the productivity and profitability of the agricultural sector.
What are the advantages of irrigation?
Benefits of Irrigation Systems
- Saves Time. An automatic irrigation system will save you plenty of time that you in the past would have spent watering your lawns, gardens and flowers.
- Saves Money.
- Saves Water.
- Improves Growth.
- Weed Reduction.
What is irrigation development?
Farmer-led Irrigation Development (FLID) is the process where farmers, alone or as a collective, take the lead in the establishment, improvement, or expansion of irrigated agriculture.
What is a positive impact of irrigation?
From a positive perspective, irrigation would reduce the erosion risk within the basin and also increase the opportunities for enhancing biodiversity values. From a negative perspective, irrigation increases the risk of contamination of ground and surface waters and could adversely impact upon landscape values.
What is the impact of over irrigation on the land?
Over-irrigation leads to water loss, increases energy use for pumping, causes leaching of nitrogen and other micro nutrients, and wastes time. Crop nitrogen needs, fertilizer costs, and nitrogen losses to groundwater also result from over-irrigation.
Why is irrigation needed in Africa?
Although irrigation in Africa has the potential to boost agricultural productivities by at least 50 percent, food production on the continent is almost entirely rainfed. The area equipped for irrigation, currently slightly more than 13 million hectares, makes up just 6 percent of the total cultivated area.
Why is irrigation A failure in Africa?
Factors explaining irrigation development failures in Africa include the lack of farmer organization (Mercoiret, 2006) as well as the unworkable large scale of irrigation projects and the lack of necessary insights in the socio-economic drivers of the stakeholders prior to the start of the development project (Molle …
What is the positive impact of irrigation?
In addition, irrigation can make crop production possible in places where rainfall and soil moisture are otherwise insufficient or make it possible to intensify production through second and sometimes third croppings. Availability of water through irrigation also reduces the risk of crop failure.
How did the development of irrigation improve agricultural output?
What are the benefits of irrigation?
Why is irrigation important for future human development?
In areas that have irregular precipitation, irrigation improves crop growth and quality. By allowing farmers to grow crops on a consistent schedule, irrigation also creates more reliable food supplies. Ancient civilizations in many parts of the world practiced irrigation.
What are the importance of irrigation in agriculture?
Irrigation is the process through which controlled amount of water can be supplied through artificial means such as pipes, ditches, sprinklers etc. the main objectives of irrigation systems is to help agricultural crop growth, landscape maintenance, reduce the effect of inadequate rainfall etc.
What is the importance of irrigation in agricultural development?
Irrigation increases agricultural production through both the expansion of cultivable area beyond that possible under rainfed agriculture and higher crop yields.
Why is irrigation important to agricultural development?
Irrigating crops is an agricultural practice that goes back thousands of years in human history. Despite significant advances in technology over time, the basic purpose of irrgation is much the same: to supplement water available through rainfall for the purpose of increasing crop yields and/or crop quality.
What are advantages and disadvantages of irrigation?
Comparison Table for Irrigation Advantages And Disadvantages
Advantages | Disadvantages |
---|---|
Helpful in low rainfall area | Initial process is costly |
Improves yield of crop | Overflow of water can increase the chance of waterborne diseases |
Makes possible to grow cash crops | It can lead to loss of land and residence |
What is the role of irrigation in farming?
Irrigation helps to grow agricultural crops, maintain landscapes, and revegetate disturbed soils in dry areas and during periods of less than average rainfall. Irrigation also has other uses in crop production, including frost protection, suppressing weed growth in grain fields and preventing soil consolidation.
Why irrigation is important in Africa?
How does irrigation damage farmland?
Areas drenched by irrigation can become waterlogged, creating soil conditions that poison plant roots through anaerobic decomposition. Where water has been diverted, soils can accrue too much salt, also harming plant growth.
How did irrigation improve agriculture?
What is Zimbabwe’s objective for irrigation development?
The government of Zimbabwe’s objective for irrigation development is to guarantee food security through increased crop production (Chazovachii, 2012; Jacobs et al., 2013).
How can we improve productivity of smallholder irrigation schemes?
Policies that govern water supply need to be improved, coupled with education of irrigators and a pluralistic extension system; all these are needed if the productivity of smallholder irrigation schemes is to be improved. Funding This work was supported by the Australian Centre for International Agricultural Research [grant no. FSC2013-006].
Do irrigators in rural development schemes have market access to markets?
This study found that irrigators in the schemes have limited access to markets, especially at Silalatshani, though they also have little need for market access due to the subsistence nature of production. However, if better market access were available it would provide incentives for irrigators to increase production.
Why do we need institutions for irrigation management?
Institutions are needed to continuously encourage dialogue among agricultural value chain stakeholders to allow irrigators to align their operations to market demands and improve the viability of irrigation systems. Introduction