5
Question
(a) A farmer found that xanthium and parthenium are also growing along with paddy inthe field ? What are such plants called ? How the presence of these plants affect thecrop yield ?(b) List any four methods for controlling and preventing the growth of such plants ?
(a) A farmer found that xanthium and parthenium are also growing along with paddy inthe field ? What are such plants called ? How the presence of these plants affect thecrop yield ?(b) List any four methods for controlling and preventing the growth of such plants ?
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Solution
Xanthium and Parthenium are called weeds.
Weeds grow simultaneously with the crop plants in a crop field. They grow very fast and take up all the necessary nutrients and water from the soil. As a result the crop plants do not get nutrition and they cannot grow as desired.
Methods of weed control:
- Application of herbicides control weeds very fast.
- Hand picking of weed plants are also done.
- Regular mowing of weeds is effective to suppress their growth.
- Biological control of weeds are possible by using insects, bacteria, fungi etc. as agents.
Xanthium and Parthenium are called weeds.
Weeds grow simultaneously with the crop plants in a crop field. They grow very fast and take up all the necessary nutrients and water from the soil. As a result the crop plants do not get nutrition and they cannot grow as desired.
Methods of weed control:
- Application of herbicides control weeds very fast.
- Hand picking of weed plants are also done.
- Regular mowing of weeds is effective to suppress their growth.
- Biological control of weeds are possible by using insects, bacteria, fungi etc. as agents.
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