Oakes Irrigation Research Site
Carrington Research Extension Center * North Dakota State University
P.O. Box 531, Oakes, ND 58474-0531, Phone: (701) 742-2744, FAX: (701) 742-2700, E-mail:												Walter.Albus@ndsu.edu

Table 1. The affect of corn stover removal from 0 to 100% on grain yield and other agronomic parameters for corn on corn plots in 2010.
				Stalk DM	Soil NO_-3-N							Plant
Stover	Grain	Harvest	Test	Removal	0-24"	Chloropyll Meter Reading				NDRE Reading²		Stand	Stalk	Grain
Removal	Yield¹	Moisture	Weight	2010	Fall 2010	21-Jul	4-Aug	18-Aug		5-Aug	27-Aug	STDEV	Nitrate-N	Oil	Protein	Starch
%	bu/ac	%	lb/bu	ton/ac	lb/ac								ppm	-----------%-------------

0	220.1	22.1	58.3	0.0	29	60.6	59.5	58.3		0.395	0.294	2.9	2298	2.3	8.0	74.7
33	217.8	21.6	59.0	1.8	31	60.7	60.1	59.0		0.390	0.269	3.3	1569	2.2	8.0	75.1
67	215.0	21.1	58.6	3.3	33	59.8	60.3	58.6		0.390	0.275	2.7	1715	2.3	8.0	74.9
100	211.1	20.6	58.3	4.6	33	59.3	59.9	58.3		0.391	0.265	2.9	1794	2.4	8.1	74.6

Mean	216.0	21.3	58.5	2.4	31.5	60.1	59.9	58.5		0.392	0.276	2.9	1844	2.3	8.0	74.8
CV%	2.2	3.2	1.0	9.2	27.0	1.7	1.9	1.3		2.1	3.9	18.3	27.5	8.7	1.9	0.6
LSD.05	NS	NS	NS	0.4	NS	NS	NS	NS		NS	0.0172	NS	NS	NS	NS	NS

								2010
Stover	Emerge	Silk	Mature	Ear	Nutrients in Stover - 2010			Nutrient
Removal	Date	Date	Date	Height	N	P	K	Value
%				inches	lb/ac	lb/ac	lb/ac	$/ac

0	5/23	7/16	9/17	35.7	0	0	0	0
33	5/23	7/15	9/13	36.5	23	1	40	35
67	5/23	7/14	9/14	33.5	50	3	76	69
100	5/22	7/14	9/13	32.8	77	4	100	97

Mean	5/23	7/15	9/14	34.6	37.5	2.0	54	50
CV%				3.4	21	37	25.0	21.0
LSD.05				1.9	13	1	22	17

¹Yield adjusted to 15.5% moisture.
Planting Date = April 27; Harvest Date = October 15 ; Previous Crop = Corn.
Fertilizer Rate lbs/acre = 220 N, 40 P₂O₅, 17 S; Irrigation = 9.8 inches

Carbon III corn on soybean stover removal 2010				Table		Figures 1-6
Detailed material and methods

Oakes Irrigation Research Site
Home page		Report 2010