Daily answer writing assignment

Answer Writing Assignment(19-06-2020)

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List out the causes of infertility of soils? (75 words)

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  • Cause of infertility of soil
    The pressures of constantly increasing agricultural production have in turn resulted in a persistent decline in soil fertility.

    This could possibly be a major challenge that Indian agriculture is currently facing.

    Concerns with soil health

    Soil degradation and loss of fertility is affecting the productive capacity of the soil.

    The current status of nutrient-use efficiency remains quite low for most nutrients.

    The demand for food grain is expected to increase, but with the current soil health status, meeting the targets would be a huge challenge.

    What are the causes?

    Inappropriate agricultural practices include,

    Overuse of chemical fertilisers and pesticides on soil.

    Excessive tillage.

    Moving away from age-old organic soil revival practices.

    Unscientific rotation of crops.

    Poor irrigation and water management practices.

    Factors such as deforestation, ill management of industrial wastes, overgrazing by cattle, and urban expansion, are also the notable causes.

    Organic matter plays a key role in maintaining soil fertility by holding nutrients to the soil. Decline in soil organic matter causes limited soil life and poor soil structure.

    Soil organic carbon plays a key role in maintaining soil fertility, increasing water-holding capacity and even suppressing crop diseases. Inappropriate practices are resulting in low Soil Organic Carbon.

    Deterioration in chemical, physical and biological health of the soils are to blame for low nutrient use efficiency.

    Natural factors such as floods, volcanoes and earthquakes also contribute to shortfalls in soil health.

    What is to be done?

    Farmers and policymakers are largely responsible for ensuring safe agricultural methods.

    Making agriculture more sustainable by having a right balance between use of agrochemicals and age-old practices of soil regeneration.

    It is the need of the hour to educate farmers on sustainable practices.

     

    • Good Answer.

      Try to write the answer within the given word limit (75 words).

      Causes of the Infertility of the soil are well written.

      You can avoid writing in detail about other aspects like ‘What is to be done’ and Way forward as this is a 5 marks, 75 words Question. You can write about those aspects in max 1-2 lines at the end of the answer.

  • CAUSES OF INFERTILITY OF SOIL

    The thin layer of grainy substance over the surface of the earth is called soil. Soil erosion and soil depletion are the major threats of soil as a resource.
    Both human and natural activities can lead to infertility of soil.

    Human induced reasons of soil erosion
    1. Deforestation
    It is the cutting down of forest and leaving open and exposed landscape. This human activity quickly accelerates soil erosion.loss of minerals and nutrients from soil as a source of humus is greatly reduced
    2. Overgrazing
    This occures when garmers stock too many animals such as sheep,goat,cattles in their land. Animals damage the soil either digging in to wet soil or compacting dry soil with their hooves. This will slow down percolation of water into the soil.
    3. Overcropping
    Is happends when land is being continuously used for cultivation without allowing to lie fallow between crops. This constant farming of land reduces soil ability to produce humus for soil fertility.

    Other human induced reasons are
    1. Sand mining
    2. Brick building
    3.faulty agro- practices
    4.human density
    5.wrong orientation of railways and road
    6. Embankments and bridges
    7. Injudicious land utilisation policy

    Natural causes of soil erosion
    Running water is the main cause of erosion because it is abundant and has lot of power. Wind is another cause of soil erosion ,as it can pick up soil and blow it far away.
    Activities that removes vegetation,allow ground to dry ,distrub ground are also increase soil erosion
    Natural causes are
    1. Intensity and duration of rain
    2. River erosion
    3. Strong winds in dry areas
    4. Flooding
    5. Desertification
    6. Other natural calamities

    About one fourth of our total land area is exposed to wind and water erosion. Soil erosion can be prevented through afforestation,crop rotation,terrace farming,construction of dams and shelterbelts..

    • Good Attempt 👍

      * Try to write the answer within given word limit. (75 words)

      * No need to write the definition of Soil as the word limit of the question is 75 words.

      * You have written clearly in the introduction that both human and natural activities can lead to Infertility of Soils.

      * So, you can also give the sub heading as Human and Natural Causes of ‘Infertility of Soils’ instead of Human and Natural Causes of ‘Soil Erosion’

      * Contents are good. Try to work more on improving the structure of the answer and word limit. Keep practicing!

      Thanks

  • Causes of infertility of soil
    1) over use of land
    One of the main cause of infertility of the soil is over use. There will not be enough time to get the natural enrichment to the soil
    Jhooming is a good method but due to limited land and time it is not much practicing
    2) over use of fertilizers
    Through green revolution we have made a tremendous growth in our agricultural production. But over use of chemical fertilizers causes damage to the soil in the long run
    Organic methods to be encouraged
    3) chemical pesticides
    Chemical pesticides kills the natural organisms helping the enrichment of soil
    4) natural calamities
    Natural calamities like flood and landslides swipes away the top soil but they deposits some alluvium too
    5) Deforestation
    Deforestation prevents the natural enrichment of soil as the humus is less and deforestation also promotes soil erosion

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