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Table 2

 N and K budgets for potential FFB yields (FFB contents according to Ng et al. (1999) and Teoh and Chew (1987), respectively), annual stem growth (Tarmizi and Mohd Tayeb, 2006), and environmental losses (Ng et al., 1999). FFB demands account for 59% to 72% of the total demand for N and 53% to 67% of the total demand for K.

 Yield FFB Export (kg ha−1 yr−1) Total demand (kg ha−1 yr−1)
Trial Mg ha−1 yr−1 N K Na Kb
AK01 23.60 77.9 101.5 120.9 172.5
BB03 25.88 85.4 111.3 128.4 182.3
PR01 18.60 61.4 80.0 104.4 151.0
PS01 23.31 76.9 100.2 119.9 171.2
SG01 33.18 109.5 142.7 152.5 213.7
TG02 26.17 86.4 112.5 129.4 183.5
TG08 24.60 81.2 105.8 124.2 176.8
a

Including 22 kg for stem growth and 21 kg for environmental demand.

b

Including 43 kg for stem growth and 28 kg for environmental demand.

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