9th Class Science Improvement in food resources Question Bank 9th CBSE Science Improvement in food resources

  • question_answer
      What are pest in crop production? Suggest preventive measure to control pests.

    Answer:

                      (i) Any organism, that can destroy or damage the crop and cause great economic loss are called pest in crop production.                   (1)              Preventive measures to control pests are (a) Ploughing the field in summer. (b) Spraying pesticide at regular intervals. (c) Cultivation of resistant varieties of crop. (d) Following crop rotation.                         (4)


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