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IX. Grain
Sorghum Insects
R. D.
Hudson and J. N. All
In 1996 grain sorghum
was harvested from 40,000 acres, this was 10,000 acres more than 1995. Yields
averaged 41 bushels per acre. The average price for grain sorghum was $2.85 per
bushel, down from $3.05 in 1995.
Chinch bug continues
to be the number one insect pest of grain sorghum in Georgia. Sorghum midge,
foliage, head feeding caterpillars, soil insects, and stink bugs continue to cause
sporadic but significant injury in some locations across Georgia.
Estimates of Losses and Control Costs
Rank |
Insect |
Cost of Control |
Damage |
Total |
1 |
Chinch bug |
$35,000 |
$79,000 |
$114,000 |
2 |
Sorghum midge |
17,000 |
23,000 |
40,000 |
3 |
Corn earworm |
13,000 |
7,000 |
20,000 |
4 |
Fall armyworm |
13,000 |
7,000 |
20,000 |
5 |
Soil insects |
5,000 |
10,000 |
15,000 |
6 |
Stink bugs |
8,000 |
4,000 |
12,000 |
| |
Total |
$91,000 |
$130,000 |
$221,000 |
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| Information Pertaining to Control of Major Grain Sorghum
Insects Pests in Georgia in 1996 |
Insects Control |
No. Acres Needing Control |
No. Acres Treated |
No. of Unit Applic. |
Avg. Cost Per Unit Treated1 |
Yield Loss on Units
Treated2 |
Yield Loss on Units
Untreated2 |
Chinch bug |
10,000 |
10,000 |
1.0 |
$8.00 |
3,000 |
25,000 |
Sorghum midge |
4,000 |
4,000 |
1.0 |
$7.00 |
2,000 |
7,000 |
Corm earworm |
2,000 |
2,000 |
1.0 |
$8.00 |
1,000 |
2,000 |
Fall armyworm |
2,000 |
2,000 |
1.0 |
$8.00 |
1,000 |
2,000 |
Soil insects |
2,000 |
2,000 |
1.0 |
$8.00 |
1,000 |
3,000 |
Stink bugs |
1,000 |
1,000 |
1.0 |
$7.00 |
1,000 |
1,000 |
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