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You are here: Home / Class 8 / Crop Production and Management / Manures

Manures

Last Updated on June 30, 2020 By Mrs Shilpi Nagpal 2 Comments

Question 1 What are manures?

Question 2 What are the advantages of manures?

Question 3 What are the disadvantage of manures?

  • NCERT Solutions Class 8 Science

Contents

  • 1 Manures
  • 2 Advantages of Manures
  • 3 Disadvantages of Manures

Manures

Repeated growing of crops in the same field removes a lot of precious minerals, elements,organic matter and other material from the soil.

Due to this soil become infertile after some time,and the crop yield decreases.

The deficiency of plant nutrients and organic matter in the soil is made by adding manures and fertilisers to the soil.

A manure is a natural substance obtained by the decomposition of animal waste, human waste, plant residue by the action of micro-organism,which supplies essential elements and humus to the soil and makes it more fertile.

Advantages of Manures

1)It enhances the water holding capacity of the soil.

2)It makes the soil porous due to which the exchange of gases become easy.

3)It increases the number of useful microbes in the soil.

4)It improves the texture of the soil.

Disadvantages of Manures

1)They are very bulky and voluminous due to which it is inconvenient to store and transport.

2)They are not nutrient specific.

See other topics from Chapter 1 Crop Production and Management
  • Crops
  • Types of Crops
  • Preparation of Soil
  • Sowing
  • Fertilisers
  • Crop Rotation
  • Irrigation
  • Methods of Irrigation
  • Weeding
  • Harvesting
  • Storage of Food Grains

Filed Under: Class 8, Crop Production and Management Tagged With: advantages of manures, disadvantages of manures, manures

About Mrs Shilpi Nagpal

Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. She has started this educational website with the mindset of spreading Free Education to everyone.

Reader Interactions

Comments

  1. R.Ayesha Firdouse says

    July 24, 2020 at 4:09 pm

    It is very useful for my online classes and online exam studies purpose thanks very much for giving answers

    Reply
  2. Aswatha says

    August 6, 2020 at 8:32 am

    It is very helpful to me ,
    I like it

    Reply

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