B.Sc. (Hons) Botany, M.Sc. Environmental Sciences, A teacher in making, 
love to paint, dance & drive

Oshin Bhalla

This course investigates the basics of Soil Science, its biological, chemical and physical properties affecting growth and nutrition of plants. This course provides a general introduction to soils. It includes terminology used in soil science; soil formation, it's profile, and some facts on  different types of soil.

Crack UPSC CSE Prelims and Mains Exams. Know how to prepare for UPSC 2019 and 2020, complete syllabus, exam patterns, latest notifications to join IAS, IFS, IPS and other cadres of Civil Services.

UPSC CSE - GS

UPSC - Civil Services Examination (IAS) Preparation

Hindi

(Hindi) Introduction to Soil Science

Crash Course

Polity - NCERT Summary

NCERT Summary

UPSC CSE

Ace the toughest competitive and government exams in India 

Test Preparation

Union Public Service Commission Exams (UPSC)

Polity - NCERT Crash Course

This lesson gives you a brief description of the educator and also the course. It also tells who all will be benefitted from this course.

Overview of the Course (in Hindi)

This lesson gives you a brief description of the basic definition of Soil and it's components. It also introduces you to the term weathering and how it is important for soil formation.

What is Soil? (in Hindi)

This lesson teaches you about the term 'Soil Science'. It gives description about what all is covered in Soil Science and what are the branches of Soil Science.

Soil Science (in Hindi)

This lesson describes Soil texture and gives an introduction to the basic consituents of soil- sand, silt and clay which make up the soil texture.

Soil Texture (in Hindi)

This lesson gives an introduction to the different soil constituents, namely sand, silt and clay.

Sand, Silt and Clay (in Hindi)

This lesson gives a description of the loamy soil, Sandy soil and clay soil.

Types of soil (based on constituents) (in Hindi)

This lesson discusses some facts and properties of a productive Soil

Productive Soil facts (in Hindi)

This lesson discusses some very important facts and points on Peat Soil.

Peat Soil facts (in Hindi)

This lesson gives a brief and clear description of the different horizons or layers of soil, and properties of each horizon in particular.

Soil Profile (in Hindi)

This lesson discusses the inorganic component of Soil and it's composition. This lesson also gives a brief account of some prominent minerals present in the soil, their few important related facts.

Inorganic component of soil

In this lesson you will learn about the major elements of the Earth's crust and their composition in percentage that make up a great proportion of minerals in the soil.

Elements of Soil

In this lesson you will learn about the important essential nutrients of soil for the plants and their classification into the macronutrients and micronutrients

Essential nutrients of Soil

In this lesson you will learn what are the macronutrients and how and which elements are categorised into minerals and non minerals classes. It will also discuss few important functions of some macronutrients

Macronutrients

In this lesson you will learn what are the different micronutrients and how the cation and anion micronutrients differ. In this lesson you will also learn the basic function of different micronutrients

Micronutrients

This lesson is an introduction to the NPK fertilizer. It gives a brief account on why and how the agriculture industry relies largely on the NPK for optimal crop growth and production.

NPK in soil

In this lesson you will learn about nitrogen as a fertilizer. It will give a detail account of the different forms of nitrogen available for plants and how the transformations in the different form occur in soil. It also gives a brief of the nitrogen cycle and also the different types of nitrogenous fertilizers generally used in fields.

Nitrogen as Fertilizer

In this lesson you will learn about the importance of Phosphorus in soil. It will also discuss the Phosphorus cycle. You will also learn why Phosphorus is limiting in terrestrial ecosystem and some important facts on Phosphorus as a fertilizer.

Phosphorus as fertilizer

This lesson discusses the significant roles potassium play in the growth and developmental process of the plants. It gives a detailed account of the deficiency of potassium in plants and how it adversely affects them. It also gives some important facts on potassium as a fertilizer and names of some commonly used potassium fertilizers.

Potassium as fertilizer

Organic particles are the result of both plants and animals inhabiting that area. This lesson gives a brief account of this organic matter in soil and what all can be included as the organic matter of soil and also what organic matter usually consists of.

Soil Organic Matter

Humus is the dark organic matter of the soil that forms in it when plant and animal matter decays. This lessons describes the process of formation of this. In this lesson you will also learn some very important and interesting facts on humus like the composition of elements in humus, why it is degradation resistant, etc. This lesson also gives a brief description on the difference between the acidic mor humus and alkaline mull humus.

Humus

This lesson gives a brief introduction to the humic substances that have been divided based on the solubility of each fraction in water adjusted to different pH conditions.

Humic substances

This lesson describes in detail the important features of the Humins, Humic acids and Fulvic acids in detail which together compromise the humic substances of the Humus. This lesson gives an important difference between the three as well based on their molecular weight and solubility at different pH conditions.

Humins, Humic acids and Fulvic acids

This lesson describes in detail the concept of soil water and a number of related terms like infiltration, permeability, water content, saturation, water potential, feild capacity, permanent willing point, unavailable water, gravitational water, water holding capacity, plant available water, wetting front and, hygroscopic coefficient.

Soil water and related terms

In the lesson you will learn about the five different types of soil water namely, hygroscopic water, gravitational water, capillary water, combined water and water vapor. This lesson gives a detailed account of all the five types of soil water.

Different types of Soil Water

In this lesson you will learn about the concept of Soil Air. This lesson also gives a vivid explanation of the different factors that affect soil air and how the composition of soil air differs from that of the atmospheric air. This lesson will also be very helpful for exam point of view as it has some important ratios for different gases that are often asked in competitive exams.

Soil Air

This lesson gives an introduction to the the classification of Soil in India in ancient times and how it has changed in the modern times today. This lesson also gives knowledge about the different agencies that are involved in the classification of soils in India.

Classification of Soils in India

Alluvial Soil is the most important and most productive soil in India. It covers about 43% of the total Soil area of India. This lesson will discuss the important characteristics of this Alluvial Soil and the important crops that can be grown in this type of soil.

Alluvial Soil

Red Soil is the third largest soil group of India and covers approximately an area of 10.6% of Indian Soil. The important characteristics of this soil, including the minerals it is Rich and poor have been mentioned in this lesson. This lesson also gives an explanation of why this soil has been named, the 'Red Soil'.

Red Soil

Black Soil or Black Cotton Soil is another important group of Soil present in India which covers approximately an area of 16.6% in India. This lesson gives some of the important characteristics of the black soil, its source of formation, it's nutrient composition, the area it covers in India and the Major crops that are grown in this Soil.

Black Soil

Laterite Soil is yet another important soil of India. This lesson discusses the important characteristics of the laterite soil, it's geographic region, climatic conditions and the Major crops grown in this.

Laterite Soil

This lesson will give some of the important features of desert soil; it's climatic conditions, the geographic region covered by this soil in India, it's major vegetation and the nutrients it is Rich and deficient in.

Desert Soil

This lesson gives a brief description on the heavy, black coloured, high organic matter containing soil, which is known as the peaty soil. This lesson talks about the formation of peaty soil and the areas where it is present in India.

Peat/Marshy Soil

In this lesson you will learn about the important characteristics of alkaline soil, it's geographic conditions and some plants that can thrive easily in alkali soils. This lesson also gives a brief description about the sodic soils and the two types of sodic soils.

Alkaline Soil

In this lesson you will learn some of the important characteristics of Mountain Soils. It discusses the source of formation of mountain soil and it's heterogenous nature. it gives some important facts on mountain soil like the percentage area it covers in India, it's major vegetation, it's two broad categories, etc.

Mountain Soil

 I am pursuing graduation from school of open learning delhi university 

Akash Sati

This course will cover all the topics of ncert and gives you an integrated approach towards ncert and tells the scientific way of learning

(Hindi) Class 6 NCERT Polity : UPSC CSE

I have completed B.A. with history, geo,political science.
follow me to learn specially for general science.
bibliophile, wondering desire.

Utkarsh Pandey

This is most important questions of general science for specially SSC CHSL &CGL and CDS 2018 examination in which we will cover important one linear questions.This course will help you in quick revision for GS portion.
This course is for quick revision as the exam is near.This course will help you in your preparation.

(Hindi) Most Important General Science One Liners

Cleared CDS exam 2 times | UPSC Aspirants | YoTuber, Educator, Motivator & Speaker | Runs a youtube channel 'STUDY WITH FUN' with 840K subs

Vinay Upadhyay

In this Course We have discussed about the top 500 very very important questions for all competitive exams like UPSC , State PCS , SSC , RRB . It's very useful for upcoming exams.

(Hindi) 500 Important Questions on Polity - UPSC CSE

Shah Jameer

In this course, Shah Jameer covers the complete polity from class 6 to 11.

Class 6 to 11 NCERT Summary on Polity for UPSC

Seniormost educator in WBCS profile 
Mentored lakhs of students with positive results 

Debalina Biswas

My course deals with a comprehensive coverage of polity which of class 10 NCERT. Basic things which we often overlook are taught clearly. I have tried modified it by giving some extra infirmation which will be really veryhelpful from the exam point of view

Comprehensive Course on Polity NCERT

Arpita Prakash

This course covers the chapters of Class 12 Political Science NCERT titled ' Contemporary World Politics'. It will help the aspirants study the subject in a comprehensive manner.

Lessons

34 lessons • 3h 38m