ISHS


Acta
Horticulturae
Home


Login
Logout
Status


Help

ISHS Home

ISHS Contact

Consultation
statistics
index


Search
 
ISHS Acta Horticulturae 515: XXV International Horticultural Congress, Part 5: Culture Techniques with Special Emphasis on Environmental Implications Chemical, Physical and Biological Means of Regulating Crop Growth in Ornamentals and Other Crops

STEM STRENGTH OF POINSETTIA

Authors:   J.S. Kuehny, P.C. Branch, P.W. Adams
Keywords:   Euphorbia pulcherrima, poinsettia, stem strength
Abstract:
Poor lateral stem strength of poinsettia has been an increasing problem leading to commercially unacceptable plants. Lateral stems tend to break from the main stem as plants reach maturity. The effects of constant versus adjusted fertilization rate, fertilizer type, plant growth regulator application, node number, and cutting stem diameter on poinsettia stem strength were investigated. A force gauge modified to clamp to the lateral stem of a poinsettia was used to determine lateral stem strength. The greater the lateral stem area, the smaller the lateral angle and the higher the lateral on the main stem, the stronger the stem strength. Poinsettias that had the greatest stem strength were fertilized with a fertilizer high in nitrate nitrogen and calcium, had no plant growth regulators applied, had a low number of laterals, and had a large stem cutting diameter.
  • Full Text (PDF format, 346985 bytes)
  • Citation
  • Translate

Download Adobe Acrobat Reader (free software to read PDF files)

515_31     515     515_33

URL www.actahort.org      Hosted by KU Leuven      © ISHS