Residual soils-types of soil, Biology

Residual Soils

Residual soils are formed at the same site where the weathering of the parent rock has taken place or soils formed in situ from the underlying rocks. These are also called sedentary soils. In these soils the surface layers are most weathered but the degree of weathering decreases with increasing depth, and the rock fragments become progressively larger and mostly chemically unaltered until they finally integrate with the underlying parent rock.

The red soils are poor in calcium, magnesium, phosphorus and nitrogen and coloured red by the presence of iron peroxide. The black soils, also called as black-cotton soils, are rich in clay, well supplied with potash,'calciunl, magnesium and iron. These are well suited to the cultivation of cotton and are characterised by the development of wide and deep cracks during the summer season.

Posted Date: 12/11/2012 1:29:59 AM | Location : United States







Related Discussions:- Residual soils-types of soil, Assignment Help, Ask Question on Residual soils-types of soil, Get Answer, Expert's Help, Residual soils-types of soil Discussions

Write discussion on Residual soils-types of soil
Your posts are moderated
Related Questions
Initial Maintenance Steps of implants It is very essential, that from the beginning of the patient interaction regarding the implant therapy, through the diagnosis and planning

Air can enter a plant through the leaf Procure a leaf with a long stalk to it and seal it into a hole through a cork. Fit this with a side tube, and seal the cork into a flask

Explain Foaming Properties of proteins To understand the foaming properties of proteins, we need to know some basic aspects of foam foods. Foam foods are usually colloidal disp

Explain what happens when the cell membrane or plasma membrane ruptures or breaks down? Ans) When cell membrane ruptures Ions leek out and unless repaired in time the cell will

Describe Intemittent Mandatory Ventilation (IMV) Mandatory breaths are delivered at set tidal volumes and rates, and the patient can breathe on his own in between through a un

Which of the following are features of allosteric inhibition? During the infection, there are many different environments that P. multocida will encounter. In order to cause an inf

What is the gross primary production of an ecosystem? How does GPP relate to photosynthesis? Gross primary production of an ecosystem, or GPP, is the amount of organic material

Why is the skin on worms, the gills in fish, and the lungs in humans good epithelial surfaces for respiration. Be specific.

Explain about the Browning Reactions? The Browning Reactions are complex reactions which occur when foods are processed. In some the brown flavour is highly desirable and is in

Concerning the sex chromosomes of the XY system which type of gamete do the male and the female individuals respectively produce? An Individual of the female sex is XX and thus