Table 4. Grain P uptake (kg ha^-1) of maize as influenced by cultivar and levels of NPK in two years.

Levels of NPK	Grain P uptake
	P 3522		P 3396		Rajkumar
	2012–13	2013–14	2012–13	2013–14	2012–13	2013–14
50% RDF	38.32b-d	32.54a-d	30.90f-i	26.61c-g	24.48jk	20.79f-h
75% RDF	38.68a-d	34.82a-c	32.08e-h	33.13a-d	29.59hi	29.75b-f
100% RDF	41.39ab	35.39a-c	33.90e-g	34.81a-c	34.89c-f	32.46a-d
125% RDF	42.78a	37.98ab	39.08a-c	41.66a	34.99c-f	36.08a-c
150% RDF	41.71ab	36.96a-c	36.03c-e	39.45ab	34.59d-f	32.89a-d
100% PK	21.41kl	19.69f-h	18.13lm	20.81f-h	18.04lm	22.69d-h
100% NK	34.87c-f	26.47c-g	24.04jk	21.84e-h	27.51ij	22.71d-h
100% NP	35.95c-e	29.32b-g	29.59hi	26.41c-g	30.32g-i	31.67a-e
Control	19.20lm	19.00gh	17.08m	14.60h	16.86m	18.88gh
Sources of variation
Year	*
Cultivar	**
Levels of NPK	**
Year × cultivar	*
Year × levels of NPK	ns
Cultivar × levels of NPK	*
Year × cultivar × levels of NPK	ns

Within cultivar, levels of NPK or year, numbers followed by different letters indicate significant differences at p ≤ 0.05 (otherwise statistically at par); ns: non-significant (p > 0.05);

*Significant at p ≤ 0.05;

**Significant at p ≤ 0.01;

Recommended dose of fertilizer (RDF), 200-60-60 kg N-P₂O₅-K₂O ha⁻¹