Full TGIF Record # 4896
Item 1 of 1
Author(s):Warrington, I. J.; Mitchell, K. J.; Halligan, G.
Author Affiliation:Div. of Pl. Physiol., DSIR, Palmerston North, New Zealand
Title:Comparisons of plant growth under four different lamp combinations and various temperature and irradiance levels
Source:Agricultural Meteorology. Vol. 16, No. 2, 1976, p. 231-245.
Keywords:TIC Keywords: Temperatures; Glycine max; Lolium perenne; Trifolium repens; Growth rate; Growth; Irradiance
Geographic Terms:New Zealand
Abstract/Contents:The lamp combinations were chosen to give light spectra well balanced in the 400-700 nm region in comparison with standard daylight; 4 combinations were used including metal-halide (Sylvania Metalarc, Philips HPI), phosphor-coated mercury-vapour (Philips HPLR), and tungsten-iodide types. Each lamp combination was studied at 2 irradiance levels (140 or 60 W/m2 PAR) and at 2 temperature regimes (27.5 deg /22.5 deg C or 22.5 deg /17.5 deg ). Sorghum, soyabean, perennial ryegrass and white clover were used as test plants. All plants grew normally and exhibited no unusual growth symptoms. However, differences in growth rate, plant form and chemical composition were recorded which emphasized the differences that can occur under these various lighting systems. Temperature and irradiance levels also markedly influenced growth and development but did not markedly alter the relative responses obtained with the various lamp combinations. The implications of the results and the problem of choosing suitable light sources for controlled environments are discussed. It is suggested that the physical characteristics of a daylight spectrum (air mass, m = 2) can be used as a standard. Biological testing can be carried out to give an insight into the influence of each spectrum on the photosynthetic and photomorphogenic responses of the plant.
Language:English
References:9
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Warrington, I. J., K. J. Mirchell, and G. Halligan. 1976. Comparisons of plant growth under four different lamp combinations and various temperature and irradiance levels. Agric. Meteorol. 16(2):p. 231-245.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=4896
If there are problems with this record, send us feedback about record 4896.
Choices for finding the above item:
Find Item @ MSU
MSU catalog number: S 600 .A34
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)