Disease levels in Tennessee have increased over the last couple of weeks. I have gotten more reports on stripe rust, a few fields with powdery mildew, have seen leaf blotch (Septoria blotch) in every field, and with wheat beginning to bloom Fusarium head blight is on the disease radar. Continue reading
Amongst all the corn planting don’t forget to check on your wheat. So far disease levels, in general, have remained low in wheat fields in Tennessee, but that can change quickly. Continue reading
It’s time to start scouting your wheat for diseases if you haven’t already! The wet, humid weather we’ve had in Tennessee can promote disease development Continue reading
It’s that time of year to sample soybean and cotton fields for nematodes, especially problematic fields. Many fields that exhibit nutrient deficiencies may have nematode problems and the only way to know is to sample. Continue reading
Soybean rust was detected on 1 leaflet out of 20 collected from a soybean field on the Milan Research and Education Center. The infected leaflet had approximately 20 sporulating pustules. No fungicide was applied to the soybeans and the sample was collected from a low lying spot of the field where soybean rust has been reported in previous years. The soybeans are in reproductive growth stage R6 – R7. Samples from soybean sentinel plots across the state are being examined to determine any other areas with soybean rust infections. Continue reading
Fungicidal seed treatments for wheat have been previously recommended in Tennessee and this year is no different. Pathogens residing in or on the seed or in the soil can survive adverse environmental conditions such as drought and winter temperatures by forming survival structures or lying dormant until favorable environmental conditions return. Hence the drought during 2012 will not reduce the risk posed by seed or soil borne pathogens. Continue reading
Stem canker is now causing severe damage and death in some susceptible soybean varieties at the Milan REC and at two field research locations near Dyersburg, TN. This is the most stem canker we have noted in several years. Continue reading
Soybean rust has not been detected infecting soybeans or kudzu in Tennessee as of this date. However, extremely small amounts of soybean rust have been confirmed in several counties in central Mississippi and some in Alabama and Arkansas. This is in the delta about 60 to 70 miles from the border of Tennessee. The amount of rust found was small but active. We are continuing to monitor for soybean rust in 12 soybean sentinel plot locations across Tennessee. Continue reading