Table 8: Growth regulator (MH-30) × variety interaction in 2011 for rotten tubers as a percentage of total yield and marketable tuber yield for Russet potatoes grown on sandy loam soils in the Mid-Atlantic, averaged across Nrates and N application timing.

Russet cultivarRotten tubersMarketable yield
With MH-30No MH-30With MH-30No MH-30

Percentage of total yieldkg ha−1

Goldrush52.3 b39.2 c7157 b9423 a
Norkotah86.4 a86.5 a2815 c2573 c

Pr > F0.01770.0873

Means within each dependent variable with the same letter are not significantly different (P ≥ 0.10, Fisher’s Protected LSD).