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

Stereoisomers , Glyceraldehyde has a one asymmetric carbon atom the central...

Glyceraldehyde has a one asymmetric carbon atom the central one and so two stereoisomers  which is also known as optical isomers are possible, which is two forms of glyceraldehyde,

Explain diabetic diets, Explain Diabetic  diets Diabetic  diets :  Th...

Explain Diabetic  diets Diabetic  diets :  There  are  therapeutic modification  in  the  quantity1 quality of  various macronutrients  particularly carbohydrates.

What is triacylglycerol, What is triacylglycerol There are 3 hydroxyl ...

What is triacylglycerol There are 3 hydroxyl groups in a glycerol molecule. If all the three groups are forming ester  linkage with fatty acids, the resulting compound is call

Explain enzymatic proteins, Explain Enzymatic Proteins The most varied ...

Explain Enzymatic Proteins The most varied and most highly specialized proteins are those with catalytic activity - the enzymes. Virtually all the chemical reactions of organic

Global Warming Prevention, Preventive steps for global warming :  Growing ...

Preventive steps for global warming :  Growing trees in vacant places. Growing social forests and protect them. Promoting abundant growth of phytoplankton plant species in marine

What is knot tying, What is Knot tying Once the suture is satisfactoril...

What is Knot tying Once the suture is satisfactorily placed, it must be secured with a knot. The instrument tie is used most commonly in cutaneous surgery. The square knot is t

Respiratory gases -respiration, Respiratory Gases -Respiration Physio...

Respiratory Gases -Respiration Physiologically the most important gases are oxygen, carbon dioxide and nitrogen. Molecular oxygen comprises 21% of the atmosphere; carbon diox

Management of diabetes, By now you know that diabetes cannot be cured but c...

By now you know that diabetes cannot be cured but can be treated so that an individual leads a normal life. Patients who maintain their blood glucose levels within the normal range

Define the term - cerebral arteriosclerosis, Define the term - cerebral art...

Define the term - cerebral arteriosclerosis An embolism can be a blood clot, a bubble of air, a deposit of oil or fat, or a small mass of cells detached from a tumor. Reduction

What is chromatography, Question 1 What is chromatography? List various me...

Question 1 What is chromatography? List various methods of chromatography. Add a note on applications of chromatography in diagnosis Question 2 Discuss the applications of co

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