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

Sex, Is sex too hot to handle???

Is sex too hot to handle???

What are intraspecific ecological interactions, Q. What are intraspecific a...

Q. What are intraspecific and interspecific ecological interactions? The Intraspecific ecological interactions are those between individuals of the similar species. The Intersp

What are the hormones secreted by the adrenal medulla, What are the hormone...

What are the hormones secreted by the adrenal medulla? What are their respective functions? The medullary portion of the adrenals secretes hormones of the catecholamine group:

Explain valacyclovir, Valacyclovir (Valtrex) - Valacyclovir is an L-val...

Valacyclovir (Valtrex) - Valacyclovir is an L-valyl ester of acyclovir that is metabolized to acyclovir after oral administration, resultingin higher serum concentrations than

Results-ross operation--surgical techniques, Results: The risk of isolate...

Results: The risk of isolated aortic valve replacement is 3-4 per cent. The long term survival for 5, 10 and 15years is 75 per cent, 60 per cent and 40 per cent respectively. The

Explain about the serengeti ecosystem, Explain about the Serengeti Ecosyste...

Explain about the Serengeti Ecosystem? The Serengeti ecosystem, one of the most stunning biological communities in the world, was devastated by the introduction of rinderpest f

Show imbalances of basal nuclei, Q. Show Imbalances of basal nuclei? BA...

Q. Show Imbalances of basal nuclei? BASAL NUCLEI - Gray matter "islands" located deep within cerebral white matter. These nuclei process a variety of descending motor informat

Explain particle movement , Explain Particle Movement ? Particle Mov...

Explain Particle Movement ? Particle Movement :  Particles are moved down a concentration gradient by the process of diffusion. Osmosis is simply the diffusion of water acr

Infants with maple syrup urine disease, Q. Infants with maple syrup urine d...

Q. Infants with maple syrup urine disease? Infants with MSUD appear normal at birth. Once they are fed on protein containing feed, they start showing the classic symptoms. Neur

Express the genotype and phenotype of the male, 1. In rabbits, black fur is...

1. In rabbits, black fur is dominant to brown, and long hair is dominant to short hair. A male is mated to several brown, short-haired females. These matings result in the followin

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