Question

UNIT 3
LETS REGAIN OUR FIELDS
Concept area: Scope of microbial fertilizers
Activity 1
en below and answer the questions
A
Natural fertity of the soil can be maintained by the scientific application of fertilizers.
Microbial fertizers are substances that contain microorganisms which help to
increase the ferti of som
Rhizobium Azotobacter Azospinium, Azolla etc are examples of microbial fertilizers.
Addition of microbial ferizers along with bio fertilizers increase quantity of elements
essential for the growth of plants.
Microorganisms can exist in soil only if we take the precautions such as ensuring
the availability of biofert zers in the soil, providing proper irrigation avoiding the
use of chemical fertilizers and pesticides etc
Unscientific application of chemical fertilizer will adversly affect the structure of soil
and also the microorganisms in the soil. In addition to this it causes serious health
and financial issues
Answer the questions by observing the following illustration
A) Fertilizers
B) Elements essential for plant growth
1) What is the general name given to micro organisms that are added to the soil to
form B from A?
m) Give examples to these micro organisms.
1) What are the precautions that has to be taken while using these micro organisms?
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SCERT
UENT
SAMAGRA SHIKSHA KERALAM​

Answer 1

Answer:

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