For both temperature and light studies, germination percentages
were arcsine square-root-transformed to achieve normality of
the data. Data presented in the figures are based on back transformation.
If the ANOVA suggested a significant main effect or
interaction, Fisher's Protected LSD test at P < 0.05 was used to
separate means. Because buried seed samples were evaluated only
twice each year (9- and 12-month retrieval date), separate analyses
were conducted for those samples by excluding the first three
retrieval dates (0, 3, and 6 month retrieval date).