Soybean cyst nematode (SCN) is a microscopic pest that feeds on soybean roots. SCN can cause significant yield losses in soybean crops, even if the plants do not show any visible symptoms of infection.
A new study has found that SCN is prevalent in 87% of soybean fields in Illinois. The study also found that the most common source of SCN resistance, PI88788, is losing its effectiveness. This means that soybean growers in Illinois may need to adopt new management strategies to protect their crops from SCN.
The study was conducted by researchers at the University of Illinois. The researchers collected soil samples from 95 soybean fields in Illinois in 2018 and 2020. The samples were tested for the presence of SCN and for the level of resistance to SCN.
The results of the study showed that SCN was present in 87% of the soybean fields. The researchers also found that the level of resistance to SCN was declining in many of the fields. This is likely due to the fact that SCN has been repeatedly exposed to the same source of resistance, PI88788.
The study's findings highlight the need for soybean growers to adopt new management strategies to protect their crops from SCN. These strategies may include rotating soybeans with non-host crops, using SCN-resistant cultivars, and applying nematicides.
Soybean growers should also regularly test their fields for SCN. This will help them to identify fields that are at risk of SCN infestation and to take appropriate action to protect their crops.
The study's findings are a reminder that SCN is a serious threat to soybean crops in Illinois and surrounding areas. Soybean growers should take steps to protect their crops from SCN by adopting new management strategies and by regularly testing their fields for SCN.
Categories: Illinois, Crops, Soybeans