Question

write 20 points difference between manure and fertilisers​

Answer 1

Answer:

Manure is an organic substance that is obtained from decomposition of vegetables and animal waste. Fertilizers are inorganic substances manufactured in factories. Manures are relatively less rich in plant nutrients, they only remove general deficiency of soil.

It is a natural substance obtained by decomposition. A manure is not very rich in essential plant nutrients. A manure provide a lot of humus to the soil. A manure is absorbed slowly by the plant .

Manuring is the process of addition of natural or chemical sources of nutrients for the crop. Natural sources include dead wastes of plants, humans and animals, excreta and other wastes. These on decomposition give organic products called organic manure or simply manure.

Manure improves the water holding capacity, aeration, and texture of the soil. These lead to the development of a new method of farming called organic farming where only organic fertilisers, pesticides, etc. are used.

Fertilisers are chemical compounds which include salts or organic compounds like urea, ammonium sulfate, sodium nitrate etc. They are the sources of plant nutrients like potassium, nitrogen, and phosphorus. Fertilisers are commercial products mainly manufactured in factories. They have enhanced the yield spontaneously.

Chemical fertilisers should be used in optimum amount with great care. Their excess use may lead to soil infertility, water pollution, and even cause disease. Overall, it damages the crop. Hence it is advisable to use organic manure instead of chemical fertilisers.

Other alternative methods for soil replenishment are vermicomposting, crop rotation, growing of leguminous plants, etc

Answer 2

Answer:

State the differences between manure and fertilizer.

Fertilizers are inorganic substances manufactured in factories. Manures are relatively less rich in plant nutrients, they only remove general deficiency of soil. Fertilizers are very rich in plant nutrients like Nitrogen[N], Phosphorus [P], Potassium [K]

Explanation: