Permanent wilting percentage (pwp), Biology

Assignment Help:

Permanent Wilting Percentage (PWP)

It is the percentage of moisture in the soil at which a plant wilts and does not recover unless water is added to the soil. PWP for clay is about 26%, for silt 10% and for sand 3-5%. It must be noted that PWP is used to express property of a soil not any feature of the plant. However, the moisture content at which any plant shows permanent wilting need not be the same for all plants even in the same soil. This happens because some plants are prone to wilting at fairly reasonable water content of soil while others wilt only when the moisture content is very much reduced.

The water status of a plant in terms of FC and PWP is significant only if the soil properties are known. This is because the soil determines the availability of water. However, it is desirable as well as easier to express soil water status in terms of water potential so that soils become uniform with respect to water.


Related Discussions:- Permanent wilting percentage (pwp)

Plants are supplied with adequate amount of phosphorus, Plants are supplied...

Plants are supplied with adequate amount of phosphorus Phosphorus has also been associated with early maturity of crops particularly the cereals. Its shortage is accompanied by

What are the archenteron and the blastopore, What are the archenteron and t...

What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed? What are the destinations of the archenteron and o

Spermatophores, Spermatophores Many non-chordates do not release free ...

Spermatophores Many non-chordates do not release free sperms during copulation. They have a mechanism to bundle and enclose a number of sperms in a sheath usually made of gela

Morphological changes, Morphological changes Aquatic plants produce di...

Morphological changes Aquatic plants produce different kinds of leaves and produce aerenchyma (tissues with air gaps) where there be a need to do so. Also, a thick cuticle on

Explain the carrying capacity in ecology, Explain the carrying capacity in ...

Explain the carrying capacity in ecology? Carrying Capacity :  We have seen that natural populations do not normally achieve the maximum intrinsic rate of natural increase, o

What is limnetic zone, Q. What is limnetic zone? The open water zone is...

Q. What is limnetic zone? The open water zone is called the limnetic zone. This represents the zone or depth of the water upto which sunlight can penetrate. Phytoplankton along

Solid waste management, All Solid Semi-Solid Wastes Arising From Human And ...

All Solid Semi-Solid Wastes Arising From Human And Animals Activities, Except Human Excreta And Sullage (Liquid Wastes From Bathrooms, Kitchens Etc.) are discarded as useless or un

Illustrate about whey protein, Illustrate about Whey protein Whey prote...

Illustrate about Whey protein Whey protein concentrate (WPC) is a highly nutritious ingredient manufactured from fresh dairy whey and it is spray dried to provide an excellent

Ensure proper diet to control protein energy malnutrition, Ensure proper di...

Ensure proper diet to Control Protein Energy Malnutrition? PEM is preventable. It is a disease of the poor and the ignorant that suffer from social inequalities. Therefore, a h

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