Blog Archives

Management of Soybean Cyst Nematode Starts with Soil Sampling this Fall or Spring

The soybean cyst nematode (SCN) (Figure 1) causes greater annual yield losses in Kentucky than any other pathogen of soybean.  The last time a formal survey was conducted by the University of Kentucky in 2006 and 2007, approximately 76% of

Posted in Grains

Causes for Green Stem Syndrome in Soybeans are Still a Conundrum

Description of green stem syndrome in soybeans Green Stem Syndrome (GSS) is a condition where the stems of soybean plants remain green when the rest of the plant is senescing (normally stems, pods and seeds are brown and ready for

Posted in Grains

Soybean Stem Borer Infestations are Being Noticed by Kentucky Growers: Yield might Be Reduced

Occurrences in commercial soybean fields in 2017 and 2018 In 2017, there were several reports of Dectes presence in commercial fields in Webster, Henderson, and McLean counties in Kentucky. Soybean plants infested with Dectes larva or tunneling caused by this

Posted in Grains

Phomopsis Seed Decay and Purple Seed Stain Prevalent in Harvested Soybeans

Although soybean yields have been pretty good this year, the seed quality of harvested soybeans has not been great in some areas of the state.  Seed diseases have been prevalent in areas that have received a lot of rain since

Posted in Grains

Difficulties in Diagnosing Diseases of Mature Soybean Plants

After soybean plants have matured in the field, many organisms begin to grow and colonize these plants.  Rainy weather often promotes growth of and colonization by these organisms.  The longer that plants have been sitting in a field after they

Posted in Grains

Update on Sugarcane Aphid Attacking Sweet Sorghum

This season, sugarcane aphid was first spotted close to the same time as last year. Generally, populations were slow to build, but this year a number of growers were prepared to treat with Sivanto Prime, which is available through an

Posted in Grains

Southern Rust of Corn Confirmed in Kentucky

Southern rust of corn, caused by the fungus Puccinia polysora, was confirmed by the University of Kentucky Plant Disease Diagnostic Laboratory (PDDL) for the first time in 2018 from a sample collected in Logan County. This is the first confirmation

Posted in Grains