2. Both manures and fertilisers replenish soil fertility. Compare and contrast the
advantages and disadvatages of using them.
Answers
Answer:
Manure is obtained from the decomposition of dead plants and animals. They essentially function as sustenance to the crops. They help in the proper cultivation of crops. Addition of manure enables the soil to hold more water. Organic manures have acids that dissolve the nutrients with soil and make it available to the plants.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 fertilizer is a chemical substance that contains necessary nutrients such as nitrogen, potassium, and phosphorous to make the soil fertile. Popular examples of fertilizers are urea, potash, and ammonium sulphate.
Advantages of fertilizers
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 cropsManures Fertilizers
Manure is obtained naturally by the decomposition of dead plants and animals. Fertilizers are chemical substances and not typically natural.
It is not very rich in nutrients. It is rich in soil nutrients like nitrogen, phosphorous, and potassium.
It is slowly absorbed by the plants. It is easily absorbed by the plants.
It provides a lot of humus to the soil. It does not provide any humus to the soil.
They are prepared naturally in the fields. They are prepared in the factories.
These do not improve the physical conditions of the soil relatively These improve the physical condition of the soil.
Does not adversely affect the plant or the soil if supplied in large quantities. Adversely affects the soil and the plant if supplied in large quantities