The maturity group of spelt is determined by the length of the growing season in days from emergence to full maturity. The crop is typically divided into early, mid-season, and late-maturing varieties, with the duration of the spring form period ranging from 66 to 92 days.
In the reference
31
varieties
crop Spelt,
where this is mentioned in the description.
The assessment of the maturity group in spelt is based on standard phenological observations used for small grain cereals. Varieties are classified by comparing the absolute duration of the vegetation period with control samples, which allows them to be assigned to specific maturity categories depending on the cultivation region and heat availability.
A biological feature of the species, related to the presence of dense glumes, directly affects the requirements for physiological maturity timing, as this determines the efficiency of subsequent grain dehulling. When selecting a variety, it is critical to consider the botanical species, as requirements for the growing season differ significantly between emmer wheat and spelt.
General information about the subject — on the page
Maturity group.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.