Agronomic Response of Corn (Zea mays L.) Hybrids to Plant Populations

Table 2

Plant height and stalk diameter of corn hybrids and plant populations in 2016 and 2017.

	Plant height^a		Stalk diameter^a
	cm		mm
Hybrid
DK 67–14	83.3 a		25.0 a
DK 67–72	75.5 c		24.2 b
DK 68–26	81.6 b		24.7 a
Plant population(1000 plants·ha^−1)
	2016	2017
43.6	202.9 c	200.1 a	28.5 a
53.5	206.8 ab	199.7 a	26.9 b
64.9	207.9 ab	200.8 a	25.7 c
75.2	207.5 ab	201.7 a	24.9 d
58.9	207.3 ab	202.1 a	24.0 e
94.9	210.0 a	198.3 a	23.0 f
107.2	210.3 a	196.2 a	22.1 g
117.7	204.2 bc	202.1 a	21.7 g

Means followed by the same letter in each column are not significantly different at the 0.05 level of significance. ^aPlant height and stalk diameter data were pooled over years for hybrid while only stalk diameter data were pooled over years for plant population.