SELECT * FROM question_mgmt as q WHERE id=4329 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=12 AND subId=16 AND chapterId=364 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 8th science Crop Production and Management explain how fertilisers are different from manure

Question:

Explain how fertilisers are different from manure.

Answer:

                              Fertilisers

                                    Manure

A fertilizer is an inorganic salt which is made by chemicals.

Manure is a natural substance obtained by the decomposition of the animal waste like cattle dung, human excreta and plant residues.

A fertilizer is prepared in factories.

Manure can be prepared in fields.

A fertilizer does not provide any humus to the soil.

Manure provides a lot of humus to the soil.

Fertilizers are nutrients specific.

Manure is not nutrients specific.

Fertilizers are easy to store and transport.

Manure is hard to store and transport.

Excess use of fertilizers can make the soil acidic or basic.

Excess use of manure does not make the soil acidic or basic.

 


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