ROW SPACING, PLANT AND EAR POPULATION - CORN
The Illinois Agricultural Statistics Service conducts corn objective
yield surveys each year. Randomly selected plots in corn for grain fields
are visited monthly from August through harvest to obtain specific counts
and measurements. Data in these tables are based on survey results but are
not official estimates. They are intended to show trends in corn for grain
production practices.
CORN FOR GRAIN: Percentage distribution by row width and average row
width, Illinois, 1987-1996
| Year |
Number
of samples |
Row
width (inches) |
Average
row width |
| 30.5 & less |
30.6 - 34.5 |
34.6 - 36.5 |
36.6 - 38.5 |
38.6 & greater |
| |
Percent |
| 1987 |
230 |
57.2 |
8.3 |
17 |
16.2 |
1.3 |
32.4 |
| 1988 |
231 |
52 |
17.3 |
12.1 |
14.7 |
3.9 |
32.5 |
| 1989 |
230 |
53.9 |
11.8 |
13.5 |
17.4 |
3.4 |
32.6 |
| 1990 |
236 |
49.2 |
16.5 |
14.8 |
17 |
2.5 |
32.5 |
| 1991 |
235 |
54.9 |
16.6 |
11.5 |
13.2 |
3.8 |
32.2 |
| 1992 |
233 |
57.9 |
13.3 |
14.2 |
13.7 |
0.9 |
32 |
| 1993 |
244 |
50.8 |
17.2 |
13.1 |
15.2 |
3.7 |
32.4 |
| 1994 |
241 |
52.3 |
21.6 |
9.1 |
11.6 |
5.4 |
32.1 |
| 1995 |
268 |
56.7 |
19.4 |
10.5 |
12.3 |
1.1 |
31.9 |
| 1996 |
257 |
63.4 |
14.4 |
10.9 |
9.3 |
2 |
31.7 |
CORN FOR GRAIN: Plant population and ears per acre,
Illinois, 1987-96
| Year |
Plant population |
Ears per acre |
| 1987 |
23,700 |
22,600 |
| 1988 |
21,900 |
19,200 |
| 1989 |
21,900 |
21,000 |
| 1990 |
22,300 |
21,900 |
| 1991 |
23,700 |
21,800 |
| 1992 |
23,000 |
23,000 |
| 1993 |
23,300 |
22,600 |
| 1994 |
23,200 |
22,600 |
| 1995 |
23,650 |
22,850 |
| 1996 |
24,200 |
23,600 |
Illinois Agricultural Statistics Service
Annual Summary - 1997 |
Page 56 |
Category
Index |
|
Table of
Contents |
|
NASS-IL
Homepage |
|
NASS-HQ
Homepage |
|