Experiment II: Soil Type Effects
Soil type significantly affected growth during the 36-month period after planting,
except for height (Figure 1, Table 2). However, by 36 months after planting,
none of the response variables for a given P level differed significantly between
soil types (Table 4). This was true even in the cases of mean crown volume and
aboveground woody biomass for the most heavily fertilized trees, which were
1.6 to 2 times greater in Ultisol than Oxisol (Figure 2d and