Agronomic Response of Corn (Zea mays L.) Hybrids to Plant Populations
Table 4
Stalk lodging, moisture, grain yield, test weight, and photosynthetically active radiation readings of the three hybrids at the various plant populations in 2016–2017.a
Lodginga
Moistureb
Yield
Test weight
PARc
%
%
Kg·ha−1
Kg h·L−1
Umol m−2·s−1
Hybrid
2016
2017
2016
2017
2016
2017
DK 67–14
0.62 a
1.84 b
15.5 a
10935 ab
10721 a
74.8 a
71.4 a
198.4 b
DK 67–72
0.16 a
5.01 a
15.5 a
11016 a
19980
73.5 b
69.6 b
295.3 a
DK 68–26
0.24 a
0.69 b
15.0 b
10225 b
10596 a
75.1 a
70.9 a
293.9 a
Population (1000 plants·ha−1)
43.6
0.50 bc
14.9 d
7526 c
8914 b
72.0 c
70.5 ab
460.8 a
53.5
0.31 c
15.1 cd
8706 c
10255 ab
74.6 ab
69.2 b
317.9 b
64.9
0.46 bc
15.2 bc
11016 b
10586 ab
75.4 a
70.8 ab
285.4 bc
75.2
1.44 bc
15.3 bc
11223 ab
9886 ab
74.6 ab
71.4 a
205.7 bc
85.9
2.02 ab
15.5 ab
11330 ab
11550 a
74.9 ab
70.9 ab
234.1 bc
94.9
1.52 bc
15.7 a
12083 ab
10727 ab
75.1 ab
70.9 ab
241.3 bc
107.2
1.96 abc
15.4 b
12385 a
11038 ab
74.9 ab
71.1 ab
185.4 c
117.7
3.19 a
15.4 b
11531 ab
11100 ab
74.2 b
70.4 ab
169.9 c
Means followed by the same letter in each column are not significantly different at the 0.05 level of significance.aPopulation data for lodging pooled over years. bPooled over years. cReading taken in 2017 only.
