Based on the data given in the table, if the revegetation site were limed and fertilized with nitrogen, would you also recommend the addition of P fertilizer to improve tree growth?
Average height of 10 trees planted on reclaimed, mined-over land.
Growth factor added Nothing added 100 kg/ha N 50 kg/ha P 2 cm/wk water
no lime 56 45 63 50
lime added 85 170 84 80
A) no B) yes C) no basis to judge
C
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