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)

Explain the pre pregnancy height and foetal outcome, Explain the Pre Pregna...

Explain the Pre Pregnancy Height and Foetal Outcome? Maternal height prior to conception, determined by heredity, socio-economic environment and maternal nutritional status, is

Explain the factors on which spoilage of fish depends, Q. Explain the facto...

Q. Explain the factors on which Spoilage of fish depends? i) The type offish. Different types of fish are susceptible to spoilage due to shape and size. A fat fish is suscept

Describe the classification of life in diversity of life, Describe the Clas...

Describe the Classification of Life in diversity of life? There are at least 10 million different kinds of living organisms inhabiting Earth. Many different organisms have comm

The process of evolutionary cephalization be described, Using examples of i...

Using examples of invertebrate nervous systems how can the process of evolutionary cephalization be described? Considering the instance of invertebrates it is observed that ev

Is there a respiratory pigment in the annelid blood, Is there a respiratory...

Is there a respiratory pigment in the annelid blood? The blood in beings of the phylum Annelida have the respiratory pigment hemoglobin (the similar found in chordates) and oth

What are the pupillary defects, What are the Pupillary defects There ar...

What are the Pupillary defects There are certain deviations  from normal pupillary reflexes which point towards certain specific pathology.

What is the excitation threshold of a neuron, What is the excitation thresh...

What is the excitation threshold of a neuron? How does this threshold relate to the "all-or-nothing" rule of the neural transmission? The excitation threshold of a neuron is th

Vegetative Development - Differentiation, Vegetative Development - Differen...

Vegetative Development - Differentiation It is referred to as qualitative changes that lead to increased specialisation. For example, the formation of cells and tissues of roo

Choline, CHOLINE Found in egg liver & kidney. Synthesized in body...

CHOLINE Found in egg liver & kidney. Synthesized in body with acetyle coA. It forms acetylcholine. Deficiency causes damage to kidney.

Explain the types of foods used in space, Explain the types of foods used i...

Explain the types of foods used in Space? The various types of foods are enumerated herewith. Thennostabilized (T): Heat processed foods ("off-the-shelf' items) in aluminium

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