TY - GEN
T1 - Relationship between photosynthesis and substrate moisture for container-grown hibiscus and cornus
AU - Fulcher, A.
AU - Geneve, R.
PY - 2011/12/31
Y1 - 2011/12/31
N2 - 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. Photosynthetic 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.
AB - 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. Photosynthetic 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.
KW - Nursery crops
KW - Substrate water content
KW - Water deficit
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U2 - 10.17660/ActaHortic.2011.922.23
DO - 10.17660/ActaHortic.2011.922.23
M3 - Conference contribution
AN - SCOPUS:84863448378
SN - 9789066055346
T3 - Acta Horticulturae
SP - 183
EP - 186
BT - XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010)
ER -