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Farmers spread different types of fertilisers on field. Why are these added?
Farmers spread manure of fertilisers in the field or in gardens, etc. Why are these added to the soil?
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Fertilizers are added to the soil for getting better yield. But how do these fertilizers work?
Fertlilizers may be chemical or biological. We can discuss about both topics later. Plants too are living
organisms, they need water and nutrents to surVive, these nutrients are absorbed by the root hairo
the plants and transferred to different parts of the plant by xylems and phloems through the circulatory
system of the plant. These nutrients help the plants to accelarate growth, flowering and giving more
yield. Fertilizers also help plants to fight against diseases to some extend. The proper application of
fertilizers along with pesticides would help the plant to produce more yields. Some of the most common
used fertilizers include NPK 18:18:18 this fertilizer contain elements like Nitrogen, phosphorous
pottassium and many other elements which are necessary for the proper growth ot the plan
We have already told about different types of fertilizers
1.Biological fertilizers.
These fertilizers are otherwise known as naturalfertilizers.as these fertilizers can be found naturally.
Some example of these fertlizers includes manure from different biological wastes, dung of various
animals etc These fertilizers help improve the quality of the soil naturally as it would promote the
growth of aerobic bacteria and earthworms thereby improving the ventilation of the soil
2.Chemical fertilizers
Chemical fertilizers are those fertilizers which are made by man for the purpose of providing good
sudden nutrition to the plants. These are made industrially and the uncontrolled regular application of
these fertlizers would result in the loss of fertility of the soil The use of chemical fertilizers needs to be
Controlled as it contains different substances that would kill the helptul earthworms and aerobic
bacterias in the soil. Although biological fertilizer are rich with
nutrients it cannot be used for human as
well as animal consumption.
