Soil And Its Classification
Soil And Its Classification
Soil Classification: Brief descriptions of the major soil groups along with their modern nomenclature are as follows:
Alluvial soils: These include the deltale alluvium, caleareous alluvial soils, coastal aliua and coastal sands. This is by far the largest and most important soil groap of India contributing the largest share to agricultural wealth. The streams, draining the Himalay as, bring with them the products weathering of rocks constituting the mountains in various degrees of tineness and deposir them on the plains. It is highly fertile.
Black soils: These vary in depth from shallow to deep. There is no change in eolour up to a thickness of to 3 metres. Black soils are hishly argillaceous, fine grained and dark and contain a high proportion Calcium and magnesium carbonates. They are sticky when wet. Due to contraction on drying, large a deep eracks are formed. They contain abundant iron, lime magnesia and alamina. They are poor phosphorus, nitrogen and organie matter. Cotton, sugarcane, groundnuts, millet, rice, wheat and oilseels are mainly grown in Black soil.
Red soils: The ancient crystalline and metamorphic rocks on weathering have given rise to the red silk The red colour is due to the wide diffusion of iron than to the high proportion of it. They are generaly poor in nitrogen, phosphorus and humus. These soils are poor in lime, potash, iron oxide and phosphorus. Red soils are also found under forest vegetation. Red and yellow soils are also seen side by side. The yellow colour is due to the high degree of hydration of the ferric oxide in them than that in the red soils. Ragi, Groundnut, millet, tobacco, potato, rice, wheat and sugarcane are mainly grown in Red soil.
Laterites or Lateritic soils: Laterite is a formation peculiar to India and some other tropical countries with an intermittently moist climate. It is composed essentially of a mixture of the hydrated oxides of aluminium and iron with small amounts of manganese oxides, titania etc. It is derived from the atmospheric weathering of several types of rocks. Under the monsoen conditions of alternating wet and dry seasons, the siliceous matter of the rocks is leached away ahmost completely during weathering. Tea, coffee, cashew, rubber and coconut are chiefly grown in these soils.
Desert soils: Desert Soil is a mantle of blown sand, which, combined with the arid climate, results in poor soil development. The most predominant component of the desert sand is quartz in well-rounded grains. A desert, owing to the physiographic conditions of its situation, receives little rain. The sands there, which cover the area, are partly derived from the disintegration of the subjacent rocks, but an largely blown in from other regions. Some of these soils contain high percentages of soluble salts, high pH, low loss on ignition, a varying percentage of calcium earbonate, and are poor in organic matter.
Students / Parents Reviews [20]
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thMy experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
Upmanyu Sharma
7thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
10thAbhyas is an institute of high repute. Yogansh has taken admission last year. It creates abilities in child to prepare for competitive exams. Students are motivated by living prizes on basis of performance in Abhyas exams. He is satisfied with institute.
Yogansh Nyasi
7thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thMy experience with Abhyas academy is very nice or it can be said wonderful. I have been studying here from seven class. I have been completing my journey of three years. I am tinking that I should join Abhyas Academy in tenth class as I am seeing much improvement in Maths and English
Hridey Preet
9thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
Sharandeep Singh
7thThird consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
Ayan Ghosh
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thWe started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Manya
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thThe experience was nice. I studied here for three years and saw a tremendous change in myself. I started liking subjects like English and SST which earlier I ran from. Extra knowledge gave me confidence to overcome competitive exams. One of the best institutes for secondary education.
Aman Kumar Shrivastava
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
