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. |
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Table 5. Economic injury levels based on
the number of adult sorghum midge per flowering panicle of sorghum. |
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|
Control cost ($) per hectare |
Crop
market value ($) per hectare |
250 |
300 |
350 |
400 |
450 |
500 |
550 |
600 |
650 |
700 |
750 |
Number
per panicle of susceptible sorghum |
15 |
2.4 |
2.0 |
1.8 |
1.5 |
1.3 |
1.2 |
1.1 |
1.0 |
0.9 |
0.9 |
0.8 |
20 |
3.0 |
2.6 |
2.3 |
2.0 |
1.8 |
1.6 |
1.5 |
1.3 |
1.2 |
1.1 |
1.0 |
25 |
3.7 |
3.4 |
2.9 |
2.6 |
2.3 |
2.0 |
1.8 |
1.6 |
1.5 |
1.3 |
1.2 |
30 |
4.5 |
4.1 |
3.6 |
3.2 |
2.8 |
2.5 |
2.2 |
1.9 |
1.7 |
1.5 |
1.4 |
Number
per panicle of resistant sorghum |
15 |
12.0 |
10.0 |
9.0 |
7.5 |
6.5 |
6.0 |
5.5 |
5.0 |
4.5 |
4.5 |
4.0 |
20 |
15.0 |
13.0 |
11.5 |
10.0 |
9.0 |
8.0 |
7.5 |
6.5 |
6.0 |
5.5 |
5.0 |
25 |
18.5 |
17.0 |
14.5 |
13.0 |
11.5 |
10.0 |
9.0 |
8.0 |
7.5 |
6.5 |
6.0 |
30 |
22.5 |
20.5 |
18.0 |
16.0 |
14.0 |
12.5 |
11.0 |
9.5 |
8.5 |
7.5 |
7.0 |
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Department of Entomology | Texas A&M University |
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Copyright
© 1999 Teetes and Pendleton. Unauthorized reproduction and distribution prohibited. |
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