Table 5. Grain K uptake (kg ha^-1) of maize as influenced by cultivar and levels of NPK in two years.

Treatments	Grain K uptake
	2012–13	2013–14
Cultivar
P 3522	43.05a	36.63a
P 3396	38.99b	35.17a
Rajkumar	37.89b	33.31b
Levels of NPK
50% RDF	40.41de	35.26bc
75% RDF	44.96c	41.39ab
100% RDF	45.21bc	42.12ab
125% RDF	48.92a	45.49a
150% RDF	48.28ab	43.23ab
100% PK	26.65f	23.92d
100% NK	42.53cd	33.59c
100% NP	38.47e	28.95cd
Control	24.36f	21.40d
Sources of variation
Year	**
Cultivar	**
Levels of NPK	**
Year × cultivar	ns
Year × levels of NPK	ns
Cultivar × levels of NPK	ns
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 ≤ 0.01;

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