What are positive and negative effect of irrigation?

What are positive and negative effect 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.

What are positive effects of irrigation?

rising water tables. increased storage of groundwater that may be used for irrigation, municipal, household and drinking water by pumping from wells.

What are the negative effects of irrigation?

The effects may be water mining, land/soil subsidence, and, along the coast, saltwater intrusion. Irrigation projects can have large benefits, but the negative side effects are often overlooked. The lower the irrigation efficiency, the higher are the losses.

What are good things about irrigation?

Installing an irrigation system may seem like a costly endeavor, including the labor involved, but sprinkler or drip configurations have several advantages.

• Prevents Disease and Weeds.
• Conserves Water and Time.
• Preserves Soil Structure and Nutrients.
• Gardening Flexibility.

What is the important of irrigation?

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.

What is the impact of irrigation on human environment?

The expansion and intensification of agriculture made possible by irrigation has the potential for causing: increased erosion; pollution of surface water and groundwater from agricultural biocides; deterioration of water quality; increased nutrient levels in the irrigation and drainage water resulting in algal blooms.

What are the positive impact of irrigation on human environment?

Irrigation has contributed significantly to poverty alleviation, food security, and improving the quality of life for rural populations. However, the sustainability of irrigated agriculture is being questioned, both economically and environmentally.

How does irrigation affect climate?

This impact, seen in dry years especially, affects the layer of air closest to Earth, which is most susceptible to heat exchange and evaporation from the Earth’s surface. Their findings show that irrigation may play a role in forming shallow clouds, which alter the local climate.

What are the main types of irrigation?

Types of Irrigation

• Surface irrigation. Surface irrigation is the oldest form of irrigation and has been in use for thousands of years.
• Micro-irrigation.
• Drip irrigation.
• Sprinkler irrigation.
• Center pivot.
• Irrigation by lateral move (side roll, wheel line, wheelmove)
• Lawn sprinkler systems.
• Hose-end sprinklers.

What is the purpose of irrigation?

Irrigation is the artificial application of water to the soil through various systems of tubes, pumps, and sprays. Irrigation is usually used in areas where rainfall is irregular or dry times or drought is expected. There are many types of irrigation systems, in which water is supplied to the entire field uniformly.

How irrigation affects the hydrological cycle?

However, extracting groundwater for human use and crop irrigation can disrupt this natural cycle by increasing evapotranspiration. Water used for irrigation mostly evaporates instead of running off the land or returning to groundwater, and this, in turn, influences the atmosphere.

What are the positive effects of irrigation?

To be sustainable, irrigation must avoid the negative impacts. The positive aspect of irrigation is that, by intensifying food and forage production in the most favourable lands, it can allow a country to reduce excessive pressure on marginal lands now under rain-fed cultivation or grazing.

Why is irrigation bad?

The excessive irrigation may lead to lodging of the crop, may fall on the ground under the effect of strong winds. Due to excess water the roots of the plant may not be able to provide necessary anchorage in the wet soil. Thus, excessive watering may damage the crop and reduce the quantity and quality of the produce.

What is impact irrigation?

ENVIRONMENTAL IMPACTS OF IRRIGATION. Environmental impacts of irrigation are the changes in quantity and quality of soil and water as a result of irrigation and the ensuing effects on natural and social conditions at the tail-end and downstream of the irrigation scheme.

What are the different methods of irrigation?

There are many different types of irrigation methods. The most common ones are: Sprinkler Irrigation. Drip irrigation. Surface irrigation. Sub surface irrigation. Manual irrigation.