Effect of Seed Distribution and Population on Maize (Zea mays L.) Grain Yield

Table 1

Treatment arrangement with preplant N rate, seeding rate, and harvest plant population at Efaw and LCB, Stillwater 2013.

		Pre-plant N (kg ha^−1)			Plant population (plants ha^−1) Efaw				Plant population (plants ha^−1) LCB
Seeds hill^−1	Plant spacing (m)	2012	2013	Seeding rate (plants ha^−1)	Measured		% Decrease		Measured	% Decrease
					2012	2013	2012	2013	2012	2012
1	0.16	180	130	82,236	74,354	54,884	10	33	59,514	28
2	0.16	180	130	164,473	156,673	68,426	5	58	107,556	35
3	0.16	180	130	246,710	229,093	80,050	7	68	169,579	31
1	0.32	180	130	41,118	39,437	27,442	4	33	29,040	29
2	0.32	180	130	82,236	81,245	53,686	1	35	59,514	28
3	0.32	180	130	123,355	121,896	40,744	1	67	85,327	31
1	0.48	180	130	27,412	27,215	18,694	1	32	19,719	28
2	0.48	180	130	54,824	51,627	22,649	6	59	39,437	28
3	0.48	180	130	82,236	74,930	44,459	9	46	59,156	28

Seeding rate: estimated plant population; plant population: actual number of plants at harvest; preplant : urea (46-0-0) fertilizer applied.