Explain How Fertilisers Are Different from Manure

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Detailed Solution

The main difference is that fertilisers are man-made chemicals rich in specific nutrients, while manure is a natural organic substance obtained from the decomposition of plant and animal waste.

Fertilisers: Provide nutrients like nitrogen, phosphorus, and potassium in concentrated form. They act quickly and directly improve crop yield.
Manure: Improves soil fertility gradually, enriches soil with organic matter, and enhances its water-holding capacity.

Difference Between Fertilisers and Manure

Feature	Fertilisers	Manure
Origin	Man-made, chemical or synthetic	Natural, from plant/animal waste
Nutrient Content	Rich in specific nutrients (N, P, K)	Less nutrient concentration, but balanced
Effect on Soil	Can make soil acidic or less fertile if overused	Improves soil texture, fertility, and microbes
Speed of Action	Quick, immediate effect on crops	Slow, long-term effect
Cost	Expensive compared to manure	Cheaper and easily available
Example	Urea, DAP, Potash	Cow dung, compost, green manure