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Table 4 Mean outerwood density by island and planting period, adjusted for age and MAT using analysis of covariance

From: Modelling the variation in wood density of New Zealand-grown Douglas-fir

Location

Planting year

Number of stands

Adjusted mean outerwood density (kg m−3)

North Island

Pre-1940

96

398 a

1940–1969

73

413 a

Post-1969

13

458 b

South Island

Pre-1940

19

462 b

1940–1969

86

452 b

Post-1969

25

451 b

  1. Means followed by the same letter do not differ significantly (α = 0.05, Tukey’s test)