Who invented the Falaj?
Who invented the Falaj?
ancient Iran
What is the definition of sowing?
Sowing is the process of planting. An area or object that has had seeds planted in it will be described as a sowed area.
What is irrigation and why is it important?
Irrigation, one of the many important aspects in feeding the world, allows farmers and producers to control the amount of water that is placed on the field which allows the crop to get the needed amount of water for growth and development; essentially creating a higher yield.
What are the negative effects of irrigation?
Waterlogging and salinity frequently result from poor irrigation management while the higher levels of inputs associated with irrigated agriculture result in fertilizer and pesticide runoff. At the same time, irrigation induced increases in yield and cropping intensity reduce pressures to develop yet more land.
What are the advantages of irrigation system?
Advantages of irrigation It improves the groundwater storage as water lost due to seepage adds to groundwater storage. It improves the yields of crops. This means more income for the farmer. We use it to help the growth of crops during the period of not enough rainfall.
Which irrigation system is most efficient?
Drip irrigation
Which irrigation method is most expensive?
Expensive Upfront Cost: Sprinkler irrigation systems are the most expensive when it comes to initial installation. While the general cost gets dramatically lower once they’re running, expect to pay a hefty price to set up your system in full.
Which irrigation system is most efficient Why?
What are three ways in which irrigation water is lost?
Surface irrigation losses include runoff, deep percolation, ground evaporation and surface water evapora- tion. Runoff losses can be significant if tailwater is not controlled and reused.
Why irrigation water is lost in this way?
Answer: Irrigation water losses in the canals are because of evaporation from surface of water, deep percolation to soil layers below the canals, seepage through the canal bunds, over-topping the bund, bund breaks, run-off in the drain, and rat holes in the bunds of the canal.
What does salinization mean?
Salinization is the process by which water-soluble salts accumulate in the soil.
What are the effects of salinization?
Salinity affects: farms – salinity can decrease plant growth and water quality resulting in lower crop yields and degraded stock water supplies. Excess salt affects overall soil health, reducing productivity. It kills plants, leaving bare soil that is prone to erosion.
How can we prevent the problem of soil salinity?
Methods of prevention
- monitor groundwater levels and the amount of salt in the land and water.
- encourage preventative actions to stop salt moving towards the surface.
- stop further loss of deep-rooted native vegetation in high-risk areas as well as areas that contribute groundwater to them.
What are the main causes of salinity?
Primary salinity is caused by natural processes such the accumulation of salt from rainfall over many thousands of years or from the weathering of rocks.
Why is salinization a problem?
Salinization is a major problem associated with irrigation, because deposits of salts build up in the soil and can reach levels that are harmful to crops. In addition, the salts can make ground water, which may be in use for drinking, saltier and unsuitable for drinking.