Sub Soiler  is  operated  at  maximum depth of

  1. 50 to 60 cm
  2. 70 to 80 cm
  3. 75 to 90 cm
  4. 100 to 120 cm
Anurag Mishra Professor Asked on 18th April 2016 in Agriculture.
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Answer: (4) 100 to 120 cm 

Anurag Mishra Professor Answered on 22nd April 2016.
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