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Wednesday, 9 August 2017

Assignment 17 for class 9th

Assignment 17 for class 9th
Q 1  Define and write   at  least  two  advantages of the following system of cropping:
(a) Mixed cropping
(b) Inter cropping
(c) crop rotation
Q2 Name some weeds and write methods of removal of weeds
Q3 Why do we need to protect our crops against pests? 
Q4 Name some common pests and  two plant diseases. .Explain the various methods of pest control in the fields.
 HOTS
Q1 suggest the best methods of pest control and give reason for the same
Q2 Why is it advised to clear the previous crop before sowing the next?

50 comments:

  1. Thankew mam for the assignment😊😊
    Harshita
    9E

    ReplyDelete
  2. thank you mam
    these are very helpful assignments
    Ria Goel
    9th D

    ReplyDelete
  3. Thank you mam
    Taneeshka chhabra
    9-D

    ReplyDelete
  4. Thank you so much mam.
    Prachi Mittal
    9-D

    ReplyDelete
  5. Thank you mam for such a helpful assingement
    Abhedika Singh
    9E

    ReplyDelete
  6. Cant understand q3 and HOTS

    ReplyDelete
  7. Thanks mam for assignment
    Vaibhav garg
    9-E

    ReplyDelete
  8. Thank u mam for this assignment
    Pridhi
    9th e

    ReplyDelete
  9. Mam what is the answer of this question
    Q- why is advised to clear the previous
    Crop before sowing the next? Hots Q2
    Harsh jain
    9-f

    ReplyDelete
    Replies
    1. To avoid any weed or pest to be transmitted to the next crop

      Delete
  10. thank you mam i have done the assignment
    prateek
    9f

    ReplyDelete
  11. thank you mam for the assignment

    ReplyDelete
  12. Thnx for the assignment mam
    I knew all the answers

    ReplyDelete
  13. mam I am not getting answer of last question hots please give hint

    ReplyDelete
    Replies
    1. for the best method of pest control ---- the biological methods like crop rotation .intercropping , mixed cropping or growing disease resistant varieties. also one can try natural predators to kill the pests like australian lady bird eats scale insect which distroys crops
      these methos are ecofriendly ,without pollution and does not affect the crop either

      Delete
  14. Thank you man i have done this assignment
    Akshit
    9f

    ReplyDelete
  15. This comment has been removed by the author.

    ReplyDelete
  16. thank you mam
    i have done it!
    Shagun
    ix-d

    ReplyDelete
  17. Thank you so much mam ...I've completed it ...
    Shubhi garg
    IX-D

    ReplyDelete
  18. Thank you mam
    Fahad Rehman
    IX-D

    ReplyDelete
  19. Maam Pls tell the answer of last ques of Hots...
    I have done the rest
    Devanshi Gupta
    9C

    ReplyDelete
  20. Mam I have done this assignment.
    9th F
    Sarthak

    ReplyDelete
  21. Ma'am I have done this assessment

    ReplyDelete
  22. Ma'am I have done this assessment

    ReplyDelete
  23. I have completed the assignment
    JUHI NAGPAL
    IX-C

    ReplyDelete
  24. Ma'am I have read a very good article on crop protection
    JUHI NAGPAL
    IX-C

    ReplyDelete
  25. THANK YOU MA'AM,
    I HAVE DONE THIS ASSIGNMENT.
    YASH AGGARWAL
    IX-C

    ReplyDelete
  26. Thank you mam for the assignment.
    Dhwani Singh
    9 - c

    ReplyDelete
  27. Thanks mam for ur support and guadence
    Vardaan 9c

    ReplyDelete
  28. thank you mam for the assignments...these assignments are very helpful
    Himanshu Bansal
    IX-D

    ReplyDelete
  29. THANK YOU MAM I HAVE DONE THIS ASSIGNMENT
    TANEESHKA CHHABRA
    9-D

    ReplyDelete
  30. Thanks mam.
    I have done all the questions
    Yash Bhambri
    IX-D

    ReplyDelete
  31. Thanks mam.
    I have done all the questions
    Yash Bhambri
    IX-D

    ReplyDelete