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Recognizing Challenges To Iowa’S Annual Cropping Systems, David Wright, Andrew W. Lenssen Jan 2013

Recognizing Challenges To Iowa’S Annual Cropping Systems, David Wright, Andrew W. Lenssen

Agriculture and Environment Extension Publications

Iowa’s soybean and corn cropping systems are among the most productive in the world yet, producing consistently high yields remains uncertain. This publication discusses possible solutions to problems that limit soybean yield in Iowa.


Humic And Fulvic Acids And Their Potential In Crop Production, David Wright, Andrew W. Lenssen Jan 2013

Humic And Fulvic Acids And Their Potential In Crop Production, David Wright, Andrew W. Lenssen

Agriculture and Environment Extension Publications

Humic and fulvic acids may have uses in Iowa’s large-scale production systems to improve seedling health and plant response to stress. This publication discusses the benefits and limitations of these intriguing organic compounds in soybean production.


Selecting Soybean Varieties, Joel L. Dejong, David Wright, Andrew W. Lenssen Jan 2013

Selecting Soybean Varieties, Joel L. Dejong, David Wright, Andrew W. Lenssen

Agriculture and Environment Extension Publications

Selecting the right combination of high yielding genetics and agronomic traits is the first management decision toward a successful soybean crop. This publication provides the reader with several tools that can be used to select high yielding soybean varieties best-suited to Iowa growing conditions.


Soybean Nutrient Needs, Clarke Mcgrath, David Wright, Antonio P. Mallarino, Andrew W. Lenssen Jan 2013

Soybean Nutrient Needs, Clarke Mcgrath, David Wright, Antonio P. Mallarino, Andrew W. Lenssen

Agriculture and Environment Extension Publications

Maintaining a fertile growing environment is a risk management strategy that produces higher yield and healthier plants that better manage stress. This publication outlines crop nutrient removal rates, foliar fertilization and the influence of soil fertility on plant health.


Staging Soybean Development, David Wright, Andrew W. Lenssen Jan 2013

Staging Soybean Development, David Wright, Andrew W. Lenssen

Agriculture and Environment Extension Publications

Accurate growth stage determination of soybean is essential to accurately apply pesticides and determine potential yield loss from environmental stress. This handy publication uses high quality images to enable the user to accurately stage soybean development.


Host Plant Resistance To The Soybean Aphid, Matthew E. O'Neal, Erin W. Hodgson Oct 2009

Host Plant Resistance To The Soybean Aphid, Matthew E. O'Neal, Erin W. Hodgson

Agriculture and Environment Extension Publications

This fact sheet will address how host plant resistance affects the soybean aphid, and summarizes field performance data collected from Iowa.


Soybean Aphids In Iowa—2007, Marlin E. Rice, Matthew E. O'Neal, Palle Pedersen Jul 2007

Soybean Aphids In Iowa—2007, Marlin E. Rice, Matthew E. O'Neal, Palle Pedersen

Agriculture and Environment Extension Publications

Despite this year-to-year variation, the soybean aphid remains a threat to cause economic damage to soybeans. This publication reviews what is currently known about the biology of the soybean aphid and suggests management strategies.


Soybean Aphids In Iowa—2006, Marlin E. Rice, Matthew E. O'Neal, Palle Pedersen Jun 2006

Soybean Aphids In Iowa—2006, Marlin E. Rice, Matthew E. O'Neal, Palle Pedersen

Agriculture and Environment Extension Publications

During any growing season, the soybean aphid remains a threat to cause economic damage to soybeans. This publication reviews what is currently known about soybean aphids and management strategies for 2006.


Soybean Aphids In Iowa—2005, Marlin E. Rice, Matthew E. O'Neal, Palle Pedersen Jun 2005

Soybean Aphids In Iowa—2005, Marlin E. Rice, Matthew E. O'Neal, Palle Pedersen

Agriculture and Environment Extension Publications

During any growing season, the soybean aphid remains a threat to cause economic damage to soybeans. This publication reviews what is currently known about soybean aphids and management strategies for 2005.


Soybean Aphids In Iowa—2004, Marlin E. Rice, Matthew E. O'Neal, Palle Pedersen Jun 2004

Soybean Aphids In Iowa—2004, Marlin E. Rice, Matthew E. O'Neal, Palle Pedersen

Agriculture and Environment Extension Publications

This publication reviews what is known about the insect and makes management suggestions for 2004. Included is a new economic threshold based on a review of data from field trials and university research. Entomologists from 11 universities used this information to develop a consensus recommendation for the 2004 growing season.