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Figure 3 | New Zealand Journal of Forestry Science

Figure 3

From: Evaluating Douglas-fir and western hemlock volume growth in response to thinning and fertilisation

Figure 3

Graphs of Douglas-fir (a) and western hemlock (b) fertilisation response. Percent change in volume growth is shown for an application of 450 kg/ha of urea fertiliser at age 50 for low (site index = 21 for Douglas-fir, site index = 25 for western hemlock), medium (site index = 29 for both species), and high (site index = 37 for Douglas-fir, site index = 33 for western hemlock) sites. Low: ; medium: ; high: .

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