Which factor leads to waterlogging due to obstruction? Explanation: Generally, water after seeping the soil moves horizontally before even seeping further. But this movement is sometimes is obstructed by some obstructions like stone, ice, or some impervious stratum below the top layers of pervious soil.

Which factors leads to water logging due to obstruction?

Waterlogging thrown areas) is affected by several factors which vary throughout the landscape. Waterlogging is caused by a combination of excess rainfall (for the site), poor external drain- age (runoff), poor internal drainage (water movement in the soil profile) and the inability of the soil to store much water.

What can lead to waterlogging in crop field?

Excessive Irrigation and Poor Drainage System by Farmers

Irrigation could result in waterlogging if there is overirrigation, inadequate drainage, poor irrigation management, obstruction of natural drainages, seepages from canals as the case in Pakistan, and if the parches are landlocked without outlets.

What is waterlogging and its impact?

Waterlogging is a form of natural flooding when underground water rises to surface level as the result of over-irrigation. Waterlogging can displace the spoil, affect the natural processes in the soil, and result in a build-up of toxic substances in the soil, which can impede plant growth in the immediate area.

What are the causes of waterlogging and salinity?

The excessive use of water for crops, non-cemented canals and a poor drainage system are causing waterlogging and salinity in the area.

How To Provide Water Logging | Avoided Crop Failure | Just Learning

41 related questions found

What is water logging in hydrology?

Waterlogging occurs when water table rises to the root zone as a result of overirrigation – repeated incorrect irrigation causes the formation of a shallow impermeable layer that prevents water from infiltrating down.

What is the reason of water logging in Pakistan?

Seepage of water from canal system  The main cause of waterlogging in pakistan is seepage of water from network of canal system. 40-50% water is lost from main canals ,seeps through soil and rised the ground water.  In some cases the water table has risen upto root zones or even surface of soil.

What are the causes of waterlogging?

Causes of Waterlogging

• Over and Intensive Irrigation. ...
• Seepage of water from the adjoining high lands. ...
• Seepage of water through the canals. ...
• Impervious Obstruction. ...
• Inadequate natural drainage. ...
• Inadequate surface drainage. ...
• Excessive rain. ...
• Submergence due to floods.

What are the problems of water logging?

Waterlogging lowers oxygen levels in the root zone, which reduces plant growth. Waterlogging increases the reduction potential of the soil and changes the chemical equilibrium of many elements which then enter the soil-water solution in their ionic forms.

How does waterlogging affect plants?

Waterlogging can impact cereal plant growth indirectly by affecting the availability of nitrogen in the soil. Excessive water can leach nitrate nitrogen beyond the rooting zone of the developing plant, particularly in well‐drained, lighter-textured soils.

What is waterlogging stress?

Waterlogging is one of the main abiotic stresses suffered by plants. Inhibition of aerobic respiration during waterlogging limits energy metabolism and restricts growth and a wide range of developmental processes, from seed germination to vegetative growth and further reproductive growth.

How does salinization and waterlogging cause food problems?

They concluded that salinization and waterlogging have adverse effects on plant growth and crop yield by reducing soil aeration around the root zone and increasing the osmotic potential of the soil solution. ...

What can lead to waterlogging in crop fields Class 8?

Answer: Water logging is caused when an excess of water is supplied to the field and it replaces the air present in the pores of the soil.

Which of the following factor do not affect seepage loss?

When there is no flow or the canal is dry, there will be no seepage loss in the canal. So frequency of canal usage is also a major factor in seepage loss. Characteristics of the soil traversed by the canal system does not influence the seepage in canal.

What is water logging in agriculture?

Waterlogging is the saturation of soil with water. Soil may be regarded as waterlogged when it is nearly saturated with water much of the time such that its air phase is restricted and anaerobic conditions prevail. ... In agriculture, various crops need air (specifically, oxygen) to a greater or lesser depth in the soil.

Which one of the following factor do not affect seepage loss?

Evaporation loss may range from 2 to 3% of the total canal discharge. 2. Which of the following factor do not affect seepage loss? ... The porosity of the soil, underground water-table condition, condition of the canal system, and physical properties of the canal water are all factors affecting seepage loss.

When a canal is taken as an example what factor about it cause water logging?

Explanation: When a canal is unlined then there room for seepage losses through the side slopes, and bed of the canal. This leads to the rise of water table in the adjoining areas due to percolation of water, which ultimately leads to waterlogging. 8.

What is water logging in environmental science?

Waterlogging is the natural flooding and over-irrigation that brings water at underground levels to the surface. As a consequence, displacement of the air occurs in the soil with corresponding changes in soil processes and an accumulation of toxic substances that impede plant growth.

What causes temporary water logging in cities?

Storm water, or excess water that does not get absorbed, causes waterlogging. ... In coastal cities like Mumbai, Chennai and Kolkata, if heavy rain occurs during high tide, then the tide causes the water to wash back into the city, leading to waterlogging.

Why waterlogging and salinity of soils causes problems to farmers?

Water logged soils released enough amount of nitrous oxide which is a damaging green house gas,is a major threat to the farmer's community. Salinity causes deposition of harmful salts which is turn may cause disease in crops and hampers the productivity.

What is salinization and waterlogging?

Waterlogging and salinization are harmful to the plant growth and production, while waterlogging affects plant growth by reducing soil aeration around the root zone, salinization affects crop growth by increasing the osmotic potential of soil solution.

What is waterlogging quizlet?

waterlogging. occurs when soil becomes saturated w/ water to the point that oxygen no longer gets in.

What is waterlogging in irrigation engineering?

INTRODUCTION AN IRRIGATED AREA IS SAID TO BE WATERLOGGED  WHEN THE SHALLOW WATER TABLE RISES TO SUCH AN EXTENT THAT SOIL PORES IN THE ROOT ZONE OF A CROP BECOME SATURATED, RESULTING IN RESTRICTION OF THE NORMAL CIRCULATION OF THE AIR IN O2 &CO2  WHEN THE SURPLUS WATER STAGNATES DUE TO POOR DRAINAGE.

What's meant by water logging?

Waterlogging occurs when there is too much water in a plant's root zone, which decreases the oxygen available to roots. ... This constraint may not be apparent until the whole soil profile is saturated and water appears on the surface.

What is water logging 10?

Water logging is the process in which field is filled with excess water whereas Water lodging occurs when the water logging is there and destroy the crop. The process of water logging and water lodging destroy the crop plant and prevent their growth. Waterlogging refers to the saturation of soil with water.