Laboratory method of soil textural classes, Science

Assignment Help:

Laboratory Method of Soil textural classes

The mechanical analysis methods have been used by USDA to develop a method for naming the textural class. This is depicted by a triangle shown in Fig. For a given composition of soil, the textural class can be named using this triangle.

 

1694_laboratory method.png

The sides of the triangle represent mass percentage of clay, silt and sand. The sum of the percentages of sand, silt and clay at any point in the triangle is 100.  To find the textural class on the basis of the mechanical composition of soil, the percentage of one of the separates (say clay) is first located in the diagram and projected towards the centre  of the triangle running parallel to the adjacent side. Similarly it is done for any of the other two separates, silt or sand. The point at which the two projections cross will identify the class name. Let us take an example to understand this. Suppose a soil has the following composition of the three separates, 35% clay, 25% silt and 40% sand, then we may use any two of the three values and use the above method to arrive at the soil textural class as indicated by pairs of green lines in the figure. This soil is an example of the class, 'clay loam'. You can verify this from Fig.

 


Related Discussions:- Laboratory method of soil textural classes

Land use planning and management, Land Use Planning and Management: P...

Land Use Planning and Management: People see land everywhere and get an impression that plenty of it  is available. Besides,  they do not care how  it is being used, unless o

Communication revolution, Communication Revolution: It is in this bac...

Communication Revolution: It is in this background, that communication revolution is being ushered in ou:  country. In the recent years, the rural people who have access to T

#titleChild Care Centers in Colorado, What are the ratios allowed for three...

What are the ratios allowed for three year olds and Child Care Centers in Colorado and what is the citation of the rules that addresses ratios?

Atomic energy, Atomic energy: In view of the fast depletion of our no...

Atomic energy: In view of the fast depletion of our non-renewable resources like coal and petroleum, and because of pollution which power stations burning coal cause, there h

Bdp, describe the factors which decide the broad area of scientific activit...

describe the factors which decide the broad area of scientific activity?

Pseudo-steady conditions, Evaporation in a mist of little drops is sometime...

Evaporation in a mist of little drops is sometimes used to cool hot, dry air. Let Consider the  Temperature in a spherical drop of liquid that is evaporating slowly enough that its

The movement of a glacier, Which is primarily involved in the movement of a...

Which is primarily involved in the movement of a glacier: gravity

Explain error catastrophe theory of ageing, Explain Error catastrophe theor...

Explain Error catastrophe theory of Ageing As the cells age, there is a random increase in error in protein synthesis due to insertion of wrong amino acids. They become non- fu

Define the adrenal sex hormone secretion regulated, Define the Adrenal Sex ...

Define the Adrenal Sex Hormone Secretion Regulated The secretion of adrenal androgens by the adrenal cortex is controlled by ACTH. In the discussion above, we have seen how a f

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