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CBSE Class 9 Answered

(a) A farmer found that xanthium and parthenium are also growing along with paddy in the field? What are such plants called? How the presence of these plants affect the crop yield? (b) List any four methods for controlling and preventing the growth of such plants.
Asked by Topperlearning User | 27 Apr, 2016, 06:51: AM
answered-by-expert Expert Answer

(a) Such plants are called weeds.

They compete for food, space and light. They take upnutrients and reduce the growth of the crop.

(b) (i) Use of pesticide (herbicide or fungicide).

(ii) Mechanical removal or proper seed bed removal.

(iii) Timely sowing of crops.

(iv) Intercropping and crop rotation.


Answered by | 27 Apr, 2016, 08:51: AM

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