Evaluation of Two Irrigation Scheduling Methods and Nitrogen Rates on Corn Production in Alabama

Table 7

Grain N, stover N concentrations and grain, and aboveground N uptake differences between years and N rates (0, 202, 269, and 336 kg ha^-1) at TVREC.

N rate (kg ha^−1)	Grain N concentration (g kg^−1)				Stover N concentration (g kg^−1)				Aboveground N uptake (kg N ha^−1)
	2014		2015		2014		2015		2014		2015
	Mean	SE^ǂ	Mean	SE	Mean	SE	Mean	SE	Mean	SE	Mean	SE
0	8.75^b§	0.66	11.70^c	0.21	0.61^a	1.68	8.11^b	0.87	125.43^b	22.03	166.68^c	39.03
202	10.53^a	0.66	12.52^b	0.21	3.05^a	1.68	10.50^ba	0.87	216.55^a	22.03	321.68^b	39.03
269	11.10^a	0.66	13.51^a	0.21	1.15^a	1.68	12.16^a	0.87	230.51^a	22.03	351.36^ba	39.03
336	11.54^a	0.66	14.00^a	0.21	2.45^a	1.68	13.23^a	0.87	241.79^a	22.03	421.64^a	39.03

^ǂStandard error. ^§Numbers at the same column followed by the same letter are nonsignificant at .