Discuss about the hydrometer method to determine soil, Science

Assignment Help:

Discuss about the Hydrometer Method to determine soil

Bouyoucos devised a simple and rapid technique using a specially designed hydrometer to determine sand, silt and clay content of soil without separating them. In this method a known amount of the air dry soil (say 50 g of fine soil) is dispersed in a known amount of water containing calgon (sodium hexametaphosphate) solution. After a certain period of time, in this case 40 seconds, when the largest particle (the sand) will have settled on the bottom of the cylinder, the density of the liquid is determined with the help of a hydrometer.  This gives a measure of the silt and clay in the soil. So, the 40 sec reading is the reading "grams of silt and clay in suspension".  Similarly, a density measurement is performed at two hours when the silt would also have settled. This two hour reading reads "grams of clay". The amount of sand is determined by subtracting the 40 second reading from the total amount. 

 


Related Discussions:- Discuss about the hydrometer method to determine soil

Internal bleeding-controlling bleeding, Internal Bleeding : There is littl...

Internal Bleeding : There is little that you can do for most internal bleeding other than treating for shock and calling for a doctor immediately. If the patient's condition becom

Explain main factors that influence mass movement, Discuss main factors tha...

Discuss main factors that influence mass movements. Ans) Things as if climate and food availability will make a big dissimilarity if it is too cold, too dry then people will re

Elasticity of price expectations, What happens if the elasticity of Price e...

What happens if the elasticity of Price expectations is less than one?

Solar family, The Solar Family: Let us now take you on a journey acro...

The Solar Family: Let us now take you on a journey across the universe. We begin from our planet EQrth. It  is our home. The Earth  is active, lush and fertile. It is a place

Define volume of urine - general examination of urine, Define Volume of Uri...

Define Volume of Urine - General Examination of Urine Volume: Measurement of the volume of each urine specimen passed is necessary for the conditions in which the fluid balance

Week4, Now imagine a human resource (HR) manager at a corporation, struggli...

Now imagine a human resource (HR) manager at a corporation, struggling with the concept of reading comprehension among employees in the workplace setting, wanted to try the new stu

Decomposers in a temperate deciduous forest, What are decomposers in a temp...

What are decomposers in a temperate deciduous forest? In the Deciduous Forest, many decomposers that are living there contain fungi, bacteria, and yes, even worms.

Explain the emergency contraceptive pill (ecp) method, Explain the Emergenc...

Explain the Emergency Contraceptive Pill (ECP) method The ECP method or "morning after pill" uses a high dose of combined oral contraceptives (OCs) to prevent conception. The O

Photosynthesis, what is an easy way to learn everything about photosynthesi...

what is an easy way to learn everything about photosynthesis?

Explain isoelectric ph, Explain Isoelectric  pH Isoelectric  pH:   Ma...

Explain Isoelectric  pH Isoelectric  pH:   Many  ionizable groups are  present  in  a  protein molecule. Depending on the pH of the medium, some of these groups act as proton

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