BioMed Research International

Research Article

Antioxidant Enzyme Activities and Secondary Metabolite Profiling of Oil Palm Seedlings Treated with Combination of NPK Fertilizers Infected with Ganoderma boninense

Table 3

Effect of N, P, and K nutrition and different enzyme activities of healthy and Ganoderma infected oil palm seedlings.


Week after inoculation	Ganoderma infected seedlings (UmL⁻¹)	Control (Um L⁻¹)	value	T2	T5	T6	T8	T10

	Glucanase activity			Effect of N, P₂O₅, and K₂O nutrition on glucanase activity

1WAI	10.097 ± 0.96	5.74 ± 0.33
4WAI	2.397 ± 0.35	2.5 ± 0.47
8WAI	16.837 ± 1.5	10.44 ± 1.15
12WAI	3.197 ± 0.36	4.188 ± 0.69

	Chitinase activity			Effect of N, P₂O₅, and K₂O nutrition on chitinase activity

1WAI	4.53 ±0.39			3.18	4.07	4.27	3.93	2.57
4WAI	1.57±0.26			1.50	1.22	2.23	1.73	2.16
8WAI	6.37± 0.76
12WAI	3.28± 0.63

	PAL activity			Effect of N, P₂O₅, and K₂O nutrition on PAL activity

1WAI	10.9 ±0.89	8.90 ± 0.64
4WAI	12.08 ± 1.27	8.96 ± 0.77
8WAI	8.86 ± 0.90	5.66 ±0.48
12WAI	10.28 ± 1.33	4.4 ± 0.46

	POX activity			Effect of N, P₂O₅, and K₂O nutrition and BSR on POX Activity

1WAI	20.65 ± 1.42	11.64 ± .91
4WAI	13.52 ± 1.74	9.96 ± 1.51
8WAI	6.86 ± 0.85	6.8 ±0.40
12WAI	12.86 ± 1.43	14.82 ± .94

Note. values are the means of three replicates; indicates highly significant according to -test at . WAI: week after inoculation; all the -values are highly significant at 0.001%. Means with the same letter at a given parameter are not significantly different according to Duncan’s Multiple Range Test (DMRT) at ; values are the means of three replicates ± standard error. Treatments: T2 = N3+ BF + Ganoderma; T5 = K1 + BF + Ganoderma; T6 = K3 + BF + Ganoderma; T8 = N2P2K2 + BF + Ganoderma; T10 = control (compound fertilizer) + BF + Ganoderma.