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DOI:10.1111/j.1365-2494.2010.00739.x
Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2010.00739.x/full
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http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2010.00739.x/pdf
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Publication Type:
i
Refereed
Author(s):Sakanoue, S.
Author Affiliation:Miyota Research Station, National Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Miyota, Kita-saku, Nagano, Japan
Title:Thermal time approach to predicting seedling emergence dates of red clover, white clover and lucerne in farm fields
Section:Original articles
Other records with the "Original articles" Section
Source:Grass and Forage Science. Vol. 65, No. 2, June 2010, p. 212-219.
# of Pages:8
Publishing Information:Oxford, Blackwell Scientific Publications
Related Web URL:http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2010.00739.x/abstract
    Last checked: 02/07/2014
    Notes: Abstract only
Keywords:TIC Keywords: Medicago sativa; Models; Seed germination; Seedling emergence; Temperature response; Time-of-year; Trifolium pratense; Trifolium repens
Abstract/Contents:"A practical method for predicting seedling emergence dates of red and white clovers, and lucerne is proposed. The germination response at seven different constant temperatures ranging from 5 to 35掳C was examined. Germination rate, which is a reciprocal of the duration for 50% germination of seeds, was linearly regressed against temperature to calculate the base temperature and thermal constant of seed germination. The calculated values were 3路9掳C and 15路8 degree days for red clover, 4路2掳C and 13路6 degree days for white clover, and 2路9掳C and 17路7 degree days for lucerne. Using the base temperatures, thermal constants, and the daily mean air temperatures at the study site, the seedling emergence dates of the three forage legumes were predicted. At the same time, in an outdoor pot experiment, seeds of these legumes were sown approximately every 3 weeks and seedling emergence dates were determined. The predicted dates of seedling emergence generally fitted the observed dates. Another prediction was attempted using the base temperatures, thermal constants, and normal daily mean air temperatures recorded over more than 30 years in the study site. This prediction showed that the seedlings of the three forage legumes began to emerge at the beginning of April and could continue to emerge until the beginning of November when their non-dormant seeds were present in the site, and that when the seeds were sown from mid-November of one year to late March of the next year, the emergence of seedlings was delayed until the beginning of April."
Language:English
References:45
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sakanoue, S. 2010. Thermal time approach to predicting seedling emergence dates of red clover, white clover and lucerne in farm fields. Grass Forage Sci. 65(2):p. 212-219.
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DOI: 10.1111/j.1365-2494.2010.00739.x
Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2010.00739.x/full
    Last checked: 02/07/2014
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2010.00739.x/pdf
    Last checked: 02/07/2014
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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