grainsor97- Summary of Losses from Insect Damage and Costs of Control in Georgia 1995

Summary of Losses from Insect Damage and Costs of Control in Georgia - 1997

IX. Grain Sorghum Insects

R. D. Hudson and J. N. All

In 1997 grain sorghum was harvested from 40,000 acres, this was the same as in 1996. Yields averaged 40 bushels per acre. The average price for grain sorghum was $2.65 per bushel, down from $2.85 in 1996.

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	31,000	42,000	73,000
3	Stink bugs	8,000	34,000	42,000
4	Corn earworm	13,000	7,000	20,000
5	Soil insects	5,000	9,000	14,000
6	Fall armyworm	3,000	7,000	10,000
	Total	$95,000	$178,000	$273,000

Information Pertaining to Control of Major Grain Sorghum Insect Pests in Georgia in 1997
Insect	No. Units Needing Control	No. Units Treated	No. of Unit Applic.	Avg. Cost Per Units 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	8,000	4,000	1.0	7.00	3,000	13,000
Stink bugs	3,000	1,000	1.0	7.00	1,000	5,000
Corn earworm	2,000	2,000	1.0	8.00	1,000	2,000
Soil insects	2,000	1,000	1.0	8.00	0	3,000
Fall armyworm	2,000	2,000	.3	8.00	1,000	2,000

Excluding application costs.

Yield units expressed in bushels; only sorghum losses for grain were calculated.


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