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The important commercial uses of auxins are;

  1. It is applied so as to produce adventitious root.
  2. It promotes uniform flowering.
  3. It also promotes fruit set.
  4. It is an important ingredient in the commercial preparation for root stem cutting.
  5. It prevents premature fruit drop.
  6. It is also used by the horticulturist for developing the parthenocarpic fruits.
  7. Many herbicides are synthetic auxins which are used as weed killer.
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2,4 DICHLOROPHENOXY acetic acid is a type of auxin , it eradicates weeds in the field.napthalene acetic acid also does the same.