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Which flower crop is commercially NOT suitable for polyhouse production?

  • A.Cut rose
  • B.Gerbera
  • C.French marigold
  • D.Carnation

Answer: C

French marigold is not commercially suited to polyhouse production: it is a hardy annual that grows well in the open field at low cost, so a polyhouse is not worth the expense. Cut rose, gerbera and carnation are high-value cut flowers for which controlled conditions pay.

French marigold is a low-cost bedding and cut-flower crop that grows well in the open, so the extra cost of a polyhouse is not recovered. Roses, gerbera and carnation need steady temperature and protection from rain to give quality stems.

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