SELECT * FROM question_mgmt as q WHERE id=4333 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=12 AND subId=16 AND chapterId=364 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 8th science Crop Production and Management what are weeds how can we control them

Question:

What are weeds? How can we control them?

Answer:

Weeds are the undesirable plants or we can say unwanted plants that may grow naturally along with the crops. They are hazardous to the crops as they compete with the crops for the food, nutrients, water and sunlight. Hence, they must be controlled.

The process of controlling or removing the weeds (unwanted plants) from the field is known as weeding. There are several methods to remove weeds such as tilling in which weeds are uprooted. They are removed manually by cutting with the help of Khurpi. They are also controlled by chemicals known as weedicides which kills the weeds. 


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