The effect of branch bending height and plant age on rose quality

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The effect of branch bending height and plant age on rose quality

The quality of cut roses depends on various factors such as pruning methods, branch bending management, and plant age. Branch bending height and plant age can affect the vegetative and reproductive characteristics of the rose and directly affect the final quality of the flowers in the market.

1. Effect of branch bending height on cut rose quality

Branching is a management method in rose breeding used to regulate plant growth and increase flower production. Branch bending height affects the development of lateral branches and flower quality.

A. Bending at a low height (10-20 cm)

  • Positive effects:
    • Stimulates the growth of lateral branches close to the base.
    • Increases the number of flowering branches throughout the season.
    • Reduces competition between branches for light.
  • Negative effects:
    • Side branches may be weaker and thinner.
    • Possibility of reducing the diameter of the flower stem.

B. Bending at medium height (30-50 cm)

  • Positive effects:
    • Side branches grow stronger.
    • Flowers with thicker and stronger stems are produced.
    • Flower quality and diameter improve.
  • Negative effects:
    • Slight reduction in the number of flowering branches.

C. Bending at high altitude (above 50 cm)

  1. Positive effects:
    • Produce high quality and large size flowers.
  2. Negative effects:
    • Reduce the number of flowers per harvest period.
    • Increase the possibility of shading and reduce the use of light in the lower parts.

2. The effect of plant age on the quality of cut roses

Plant age plays an important role in the growth and quality of cut flowers. With increasing age, the physiological and productive characteristics of the plant change.

A. Young plants (1-2 years old)

  • Features:
    • Faster branch growth.
    • Produces thinner and longer branches.
    • Flower quality may be lower (smaller flowers and weaker stems).
  • Advantages:
    • Ability to harvest flowers faster.
  • Disadvantages:
    • Reduced vase life.

B. Mature plants (3-5 years old)

  • Features:
    • Balanced and uniform growth of branches.
    • Production of high quality flowers (larger diameter of flowers, thick and strong stems).
    • Increase in the number of flowering branches.
  • Advantages:
    • Maximum yield and quality.
    • Suitable for commercial production.
  • Disadvantages:
    • Requires more precise nutrition and irrigation management.

J. Older plants (over 5 years old)

  • Features:
    • Reduced branch growth potential.
    • Reduced number of flowers.
    • Possibility of reduced flower quality (smaller flower size and weaker stems).
  • Advantages:
    • Suitable for supplementary flowering at the end of the season.
  • Disadvantages:
    • Reduced economic yield.

3. Combined Effects

Pruning and Plant Age

  • In young plants, pruning at medium height can help strengthen branches and produce high-quality flowers.
  • In mature plants, pruning at low or medium height works best and results in the production of the maximum number of high-quality flowers.
  • In older plants, pruning at high height may maintain flower quality, but the number of flowering branches will be reduced.

4. Optimal management for producing high-quality flowers

  • Choosing the appropriate bending height:
Depending on the production goal (higher quantity or higher quality), the bending height should be adjusted:

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