Articles
RELATIONSHIP BETWEEN PHOTOSYNTHESIS AND SUBSTRATE MOISTURE FOR CONTAINER-GROWN HIBISCUS AND CORNUS
Article number
922_23
Pages
183 – 186
Language
English
Abstract
A photosynthesis-based irrigation system is a novel approach to nursery crops irrigation management and could conceivably reduce water use during production.
Experiments were conducted to determine the plausibility of a photosynthesis-based irrigation system.
Cuttings, seedlings, and grafted (self and reciprocal) plants from two woody genera (Hibiscus rosa-sinensis, Cornus florida and Cornus kousa) were tested.
To determine if the plants responded similarly to reduced substrate moisture, gas exchange was measured over a range of substrate moisture contents.
Photo¬synthetic rates remained near maximum over a wide range of substrate moisture contents.
Moisture response curves were similar among the species and among cuttings, seedlings, and grafted plants.
A sigmoidal equation best represented the relationship between photosynthetic rate and substrate moisture content.
Experiments were conducted to determine the plausibility of a photosynthesis-based irrigation system.
Cuttings, seedlings, and grafted (self and reciprocal) plants from two woody genera (Hibiscus rosa-sinensis, Cornus florida and Cornus kousa) were tested.
To determine if the plants responded similarly to reduced substrate moisture, gas exchange was measured over a range of substrate moisture contents.
Photo¬synthetic rates remained near maximum over a wide range of substrate moisture contents.
Moisture response curves were similar among the species and among cuttings, seedlings, and grafted plants.
A sigmoidal equation best represented the relationship between photosynthetic rate and substrate moisture content.
Authors
A. Fulcher , R. Geneve
Keywords
nursery crops, water deficit, substrate water content
Online Articles (50)