Evaluation of the Nutrient Composition of Maize in Different NPK Fertilizer Levels Based on Multivariate Method Analysis

Table 4

AMMI variance analysis on leaves and stalk.

	Source	Degrees of freedom	Sum of squares	Mean of squares	F value	Variance explained
Nutrients in NPK on leaves
	Total	1559	224897	144.3
	Treatments	77	10046	130.5	0.89
	NPK	5	613	122.6	0.84
	Nutrients	12	867	72.2	0.65
	Block	39	4333	111.1	0.76
	Interactions	60	8567	142.8	0.98
	IPCA1	16	4314	269.6	1.85	50.35%
	IPCA2	14	2892	206.5	1.42	33.76%
	Residuals	30	1361	45.4	0.31	15.89%
	Error	1443	210518	145.9
Nutrients in sampling on leaves	Total	1559	224897	144.3
	Treatments	64	7754	121.2	0.83
	Sampling times	4	945	236.3	1.62
	Nutrients	12	867	72.2	0.65
	Block	39	4333	111.1	0.76
	Interactions	48	5942	123.8	0.85
	IPCA1	15	2970	198.0	1.35	49.98%
	IPCA2	13	1897	145.9	1.00	31.92%
	Residuals	20	1076	53.8	0.37	18.10%
	Error	1456	212810	146.2
Nutrients in NPK on stalk	Total	1559	231325	148.4
	Treatments	77	12519	162.6	1.09
	NPK	5	285	57.0	0.38
	Nutrients	12	2330	194.2	1.79
	Block	39	4232	108.5	0.73
	Interactions	60	9904	165.1	1.11
	IPCA1	16	4807	300.5	2.02	48.54%
	IPCA2	14	3657	261.2	1.76	36.93%
	Residuals	30	1439	48.0	0.32	14.53%
	Error	1443	214574	148.7
Nutrients in sampling on stalk	Total	1559	231325	148.4
	Treatments	64	10418	162.8	1.09
	Sampling times	4	383	95.8	0.64
	Nutrients	12	2330	194.2	1.79
	Block	39	4232	108.5	0.73
	Interactions	48	7704	160.5	1.08
	IPCA1	15	5252	350.1	2.35	68.17%
	IPCA2	13	1601	123.2	0.83	20.78%
	Residuals	20	851	42.6	0.29	11.05%
	Error	1456	216675	148.8