Question

Both manure and fertilizers replenish soil fertility. Compare and contrast the advantage and disadvantage of using them.​

Answer 1

Answer:

fertilizres are very harmful for our health

• if they are used in high amounts they can cause land degradation
• they only give quantity of crops but not qualiy
• when it rains they get mixed with water and cause water pollution...
• using them make our land unproductive
• they make people sick from inside as they do not give all the nutrition

Explanation:

fertilizres are helpful also

• without them crops cannot be grow fastly and in heavy quantity
• without them crops do not grow in large and bulk amout
• it hlps farmerbin self consumption and selling of crops for rupees
• hlp in bringing green revolution

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Answer 2

Manure is obtained from the decomposition of dead plants and animals

Advantage of Manure-

It increases the water-holding capacity of the soil.

It makes the soil porous and facilitates the exchange of gases.

The texture of the soil improves.

The number of microbes increases in the soil.

A fertilizer is a chemical substance that contains necessary nutrients such as nitrogen, potassium, and phosphorous to make the soil fertile.

Advantage of Fertilizer -

They are quick in providing plant nutrients and restoring soil fertility.

They are portable and easy to transport.

Plants easily absorb fertilizers.

Fertilizers improve and increase the productivity of many crops such as wheat, maize, and rice.

Disadvantage of Fertilizer -

Crops grow better, but so do weeds. Therefore herbicide sprays are required too.

Better quality plants attract insects so pesticides may be needed.

Excess nitrogen from fertilisers gets into water supplies, causing fish to die.

Chemicals need to be used safely. In poorer countries in particular, farmers can damage their health by applying fertilisers, pesticides and herbicides incorrectly.

Artificial fertilisers, applied without organic additions, do not improve soil structure.

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