Table 1. Fertilizer applications in 2008 and 2009.

Year	Base fertilizer			V8	V12			Silking			Total (kg ha −1 )
	N	P 2 O 5	K 2 O	N	N	P 2 O 5	K 2 O	N	P 2 O 5	K 2 O	N	P 2 O 5	K 2 O
2008	68	90	80	50	0	45	0	60	0	40	178	135	120
2009	60	135	80	100	40	0	40	0	0	0	200	135	120

N, P and K fertilizers were applied as urea, superphosphate and potassium chloride, respectively. Applications were made prior to sowing (base fertilizer), when the eighth leaf had emerged (V8), when the twelfth leaf had emerged and the ligule was visible (V12) and at silking. At V8, V12 and at the silking stage, fertilizers were applied as top dressing.