Table 2.

Average percent foliar nutrient levels in willow oaks

TreatmentTrunk injectionSoil fertilizedControl
NPKNPKNPK
Pretreatment1.45.09.751.43.08.671.37.07.69
September 19891.37.11.591.52*.10.551.34.11.63
June 19901.63.09.831.74.10.801.50.09.72
  • 1 Statistically significant from pretreatment values at P = .10