Summary

Foliar chemistry assessment undertaken every 1 to 2 years (Average over 1995 to 2005 period)
Element Current years growth Previous years growth
Average Standard error Sample size Average Standard error Sample size
Macronutrients (mg/g) N 11.11 8.577 44 14.27 7.453 79
S 191.9 422.3 29 92.42 313.3 64
P 0.956 0.757 44 1.156 0.620 79
Ca 2.786 2.458 44 4.460 2.737 79
Mg 0.538 0.421 44 0.674 0.374 79
K 3.372 2.714 44 4.323 2.372 79
Micronutrients (μg/g) Na 168.7 127.6 16 472.5 347.8 52
Zn 26.32 6.255 44 24.53 6.171 79
Mn 350.4 123.4 44 476.0 221.3 79
Fe 70.95 23.49 44 87.60 28.06 79
Cu 2.941 0.588 44 2.819 0.526 79
B 20.68 6.314 16 19.09 5.901 52
Trace metals (μg/g) Al 114.7 27.52 44 121.8 34.28 79
Ni 1.352 4.525 24 0.293 0.310 23
Co 0.181 0.143 5 0.173 0.109 5
Cd 0.189 0.106 20 0.131 0.109 20
Cr 0.224 0.221 20 0.440 0.364 20
Ti 4.381 0.624 15 8.349 0.757 15

ND: no data recorded