Start Date

4-12-2003 12:00 AM

Description

The first significant occurrence of Soybean Aphid activity in northeast Iowa was in 2001. Significant populations of aphids, in some cases exceeding 10,000 aphids per plant, were found across approximately 200,000 acres of soybeans in northeast Iowa. For those that treated for the pest, the typical yield response to foliar insecticide applications was about 10 bushel per acre. Net return to treatment averaged $35 per acre for an approximate recovery of $5 million of income from the potential $10 million of damage being caused by the pest. Not everyone treated for the pest because the potential damage from soybean aphid was largely unknown. In 2002, soybean aphids once again appeared in northeast Iowa. Populations did not appear to approach levels where insecticide treatments would be recommended. However, the general presence of soybean aphid was noted across the entire state, not just northeast Iowa.

DOI

https://doi.org/10.31274/icm-180809-750

Share

COinS
 
Dec 4th, 12:00 AM

Three Years of Soybean Aphid Activity in Northeast Iowa

The first significant occurrence of Soybean Aphid activity in northeast Iowa was in 2001. Significant populations of aphids, in some cases exceeding 10,000 aphids per plant, were found across approximately 200,000 acres of soybeans in northeast Iowa. For those that treated for the pest, the typical yield response to foliar insecticide applications was about 10 bushel per acre. Net return to treatment averaged $35 per acre for an approximate recovery of $5 million of income from the potential $10 million of damage being caused by the pest. Not everyone treated for the pest because the potential damage from soybean aphid was largely unknown. In 2002, soybean aphids once again appeared in northeast Iowa. Populations did not appear to approach levels where insecticide treatments would be recommended. However, the general presence of soybean aphid was noted across the entire state, not just northeast Iowa.

 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.