Photosynthetic, evapotranspiratory and leaf morphological properties of chrysanthemum grown under root restriction as affected by fertigation frequency

Tanjuro Goto, Taiki Matsuno, Yuichi Yoshida, Yoshihiro Kageyama

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This experiment was conducted to clarify the effect of fertigation frequency (once or 8 times per day) on the growth, evapotranspiration rate, and photosynthetic and leaf morphological properties of chrysanthemum (Dendranthema grandiflorum Kitamura cv. Pinky) grown under different restricted root zone volumes (30, 100, and 300 ml). Shoot growth was reduced with decreased root zone volume, but, the growth reduction was smaller when the plants were fertigated 8 times per day rather than once per day. Although the evapotranspiration rate did not decrease when the plants were fertigated frequently, the rate decreased significantly when the total water consumption nearly equaled the water-holding capacity of the medium (50% of the volume), especially in 30-ml or 100-ml containers. Stomata size decreased with a decrease in fertigation frequency and container size. The percentage of open stomata (open / total stomata × 100) and consequently, transpiration rate, net photosynthetic rate, and leaf CO2 concentration were significantly lower in the plants grown in 30-ml and 100-ml containers, and fertigated once per day, compared to the four other treatments. The rates of photosynthesis and evapotranspiration of the plants fertigated 8 times per day remained faster than those fertigated only once per day. Consequently, vegetative growth of the plants fertigated frequently was equal to or more vigorous than those grown with three fold greater root zone volume but fertigated only once per day.

Original languageEnglish
Pages (from-to)277-283
Number of pages7
JournalJournal of the Japanese Society for Horticultural Science
Volume71
Issue number2
Publication statusPublished - Apr 18 2002

Keywords

  • Evapotranspiration
  • Fertigation frequency
  • Photosynthesis
  • Root restriction
  • Stomata

ASJC Scopus subject areas

  • Horticulture

Fingerprint Dive into the research topics of 'Photosynthetic, evapotranspiratory and leaf morphological properties of chrysanthemum grown under root restriction as affected by fertigation frequency'. Together they form a unique fingerprint.

  • Cite this