Corn Hybrid Response to Water Management Practices on Claypan Soil

Table 8

Water management main effects for plant population before harvest and grain yield, moisture, diplodia, oil, protein, starch, and extractable starch in 2009.

Water management system	Plant population	Yield	Moisture	Diplodia	Oil	Protein	Starch	Extractable starch
	No. ha^−1	Mg ha^−1	g kg^−1	%	g kg^−1	g kg^−1	g kg^−1	g kg^−1
Nondrained, nonirrigated (NDNI)	13,600	4.5	14.5	21	41.3	95.2	711	657
Nondrained, nonirrigated, delayed planting (NDNIDP)	55,600	14.4	19.3	8	43.2	89.4	709	662
Drained, nonirrigated (DNI) at 6.1 m	47,400	9.2	17.1	23	39.8	94.4	714	660
Drained, nonirrigated (DNI) at 12.2 m	33,800	7.6	15.3	21	39.8	95.0	702	659
Drained plus subirrigated (DSI) at 6.1 m	45,200	9.8	17.6	18	39.8	92.9	713	661
Drained plus subirrigated (DSI) at 12.2 m	25,900	6.7	14.6	20	40.0	95.9	712	657
Overhead irrigated, nondrained (NDOHI)	6,700	2.6	13.5	15	41.9	85.2	716	673
Overhead irrigated, nondrained, delayed planting (NDOHIDP)	54,300	12.8	19.4	9	40.6	86.4	714	673
LSD (P = 0.05)	17,800	3.0	3.9	9	2.2	7.7	NS	11