Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Fig. 6. Phyllochrons calculated using either air or soil temperature for each treatment and emergence date compared with two equations for predicting the phyllochron. The Baker et al. (1980) equation was developed originally for an English winter wheat variety; the Kirby and Perry (1987) equation was developed for an Australian spring wheat.
