The cold requirement of tulip cultivars
Rees, A.R.
Scientia Horticulturae 7(4): 383-389
1977
ISSN/ISBN: 0304-4238 DOI: 10.1016/0304-4238(77)90012-7
Accession: 006616535
Results of 8 yr of trials were to assess the cold requirements of 116 tulip cultivars, expressed as the number of days of cold (9.degree. C) required to produce flowers in 21 days at 18.degree. C. The data are compared with commerical recommendations for the dates of transferring tulips to the glasshouse for forcing.