Water logging-water stress, Biology

Assignment Help:

Water Logging

Over saturation of soil with water is called water logging. If for any reason, the water-table rises close to the ground surface it is bad for plants and soil fertility. Under water-logged conditions the air in the soil pores is replaced by water creating anaerobic conditions in the soil. Plant roots and aerobic soil biota will perish in oxygen deficient conditions and soil fertility will be lost.

Rising of water-table upto the root zone affects plant growth adversely. When the watertable is near or just below the root zone, water rises upto the soil surface though capillary action. Water evaporates from the soil leaving behind the dissolved salts at the surface soil making it saline (Figure shown below). Unless the salts are somehow washed away or washed down, the soil remains too saline; to grow crops. It is important to prevent excessive irrigation and provide appropriate drainage facilities to prevent rising of water-table.

2107_water logging.jpg


Related Discussions:- Water logging-water stress

Excretory system, What is the excretory organ of an agama lizard?

What is the excretory organ of an agama lizard?

Metabolism of galactose, The hydrolysis of the disaccharide lactose (in mil...

The hydrolysis of the disaccharide lactose (in milk) give up glucose and galactose. Thus galactose is also a major dietary sugar for humans. Glucose and Galactose are epimers which

Mechanical prosthetic valves, Mechanical Prosthetic Valves :  These patien...

Mechanical Prosthetic Valves :  These patients should have lifelong anticoagulation. In the absence of anticoagulation systemic embolism and strokes have been reported to be 5-50

Calculate the amount of oxygen - microbial survival, Calculate the Amount o...

Calculate the Amount of Oxygen - Microbial Survival and Growth? The amount of oxygen in the environment influences the microbial growth. Depending on the oxygen requirement, yo

Special anatomic considerations in posterior maxilla, What are the special ...

What are the special anatomic considerations in posterior maxilla?  Posterior maxilla has very poor  quality of bone demanding special consideration in implant placement. These

Necessity of transport in phloem, Necessity of Transport in Phloem Lea...

Necessity of Transport in Phloem Leaves produce photoassimilates and support various tissues including roots. The excess photoassimilates and metabolites stored in specialised

What do you mean by the spinal cord, Q. What is the spinal cord? Of which e...

Q. What is the spinal cord? Of which elements is the spinal cord constituted? The spinal cord is the dorsal neural cord of vertebrates it is the part of the central nervous sys

What are the chemical substances formed by water photolysis, What are the c...

What are the chemical substances formed by water photolysis? What is the destination of each of those substances? Free electrons, hydrogen ions and molecular oxygen are liberat

Explain about the neuro trauma, Explain about the Neuro Trauma? Neuro o...

Explain about the Neuro Trauma? Neuro or head trauma includes brain injury, skull fractures, extraparenchymal or internal brain haemorrhage, Brain injury can be divided into th

Caracterized by progressive loss of the axonal myelin sheath, Q. What are a...

Q. What are a few diseases characterized by progressive loss of the axonal myelin sheath? Multiple sclerosis is a severe disease caused by progressive destruction of the myelin

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd