highly significantp < 0.001
Thousand-Seed Weight and Hectoliter Mass For thousand-seed weight (TSW), two-way ANOVA revealed a highly significant effect of Year (F 1 , 16 = 434.87, p < 0.001) and a significant Year × Treatment interaction (F 3 , 16 = 8.86, p = 0.0011), whereas the main effect of Treatment was not statistically significant (F 3 , 16 = 1.52, p = 0.2380) ( Table S1 ).