Wheat diseases have been few and far between this winter. Little wheat was planted in the fall of 2015. However, in some key areas, rust diseases (leaf and stripe) as well as bacterial leaf streak have been observed on wheat.
Mississippi State University will be hosting 5 scout schools this year. We have transitioned over the years to make these trainings much more diverse than insect pest alone. This year we will be including insects, disease, fertility, and herbicide symptomology.
The MSU OVT soybean locations were rated for disease during the 2015 season. Multiple diseases were rated at multiple locations. In the past, Cerospora leaf blight and frogeye leaf spot have been the two main diseases rated. In 2015, Septoria brown spot as well as target spot were included as well as a green stem rating. Phytotoxicity, following an accidental fungicide application, was rated in the Maturity Group IV early and late entries at one location.
We had an App created that will allow you to review the program and register straight from your Smart Phone for the 2015 Mississippi Row Crop Short Course Nov. 30th – Dec. 2, 2015 at the Cotton Mill District in
Late-season soybean rust observations occur on almost an annual basis. Even though the majority of the soybean crop has escaped yield loss as a result of soybean rust again for the 2015 season, determining the extent of the disease in MS as well as potential locations where the fungus could overwinter continue to be an important part of the monitoring/scouting program. At present (9/22), soybean rust has been detected in 41 counties.
A field training regarding late-season soybean diseases will be held in Monroe County, MS on Tuesday, September 15 beginning at 5:30 pm and ending with a meal at a local restaurant. The diseases discussed will likely include: charcoal root rot,
Soybean diseases continue to be observed throughout the MS soybean production area. The number of counties (13, as of 9/4/2015) exhibiting soybean rust has increased over the past several days. However, low levels of infection have been observed at most locations. Frogeye leaf spot, Cercospora blight, target spot, and stem canker also continue to be observed.
An agronomic crops field day will be held at Stovall farms, west and north of Clarksdale on Oakhurst Stovall Road. The field day will be held at Mr. Pete Hunter’s farm shop beginning at 10 am. MSU Extension Specialists will be present to discuss topics in corn, cotton, grain sorghum, peanut, rice and soybean.
Soybean disease continues to be observed throughout the MS soybean production system. Frogeye leaf spot, root-knot nematode, and a first report of soybean rust occurred over the past 7 days. In addition, widespread fungicide phytotoxicity has been observed in numerous fields due to the hot and humid conditions.
The diseases present in the soybean crop have increased over the past several weeks. Cercospora blight and frogye leaf spot continue to be observed throughout much of MS. Fungicide phytotoxicity continues to be one of the hot topics of the 2015 season with numerous fields having received specific fungicide products that resulted in a foliar injury due to the extreme temperatures.
The MSU-DREC Rice Producer Field Day will be held in conjunction with the annual Mississippi Farm Bureau Federation Summer Rice Grower Meeting this year on the afternoon of July 30 at the Capps Center in Stoneville.. The Farm Bureau meeting
Phytotoxicity as the result of applying fungicides that contain an active ingredient that produces an “injury” to soybean leaves has been observed this year. Large areas of fields or entire fields in an area with observable interveinal chlorosis should be observed for the presence of a specific disease. Observing root systems as well as cutting into the main stem to expose the vascular tissue should help tell the difference between many soybean root diseases and whether or not a disease is present.
The soybean disease situation has not changed much over the past week, but as the crop matures more diseases will likely be observed throughout the state. At present, brown spot, frogeye, the mystery disease, and a few other minor issues can be observed in most soybean fields.
Rice leaf blast has been observed most of the rice season throughout the MS Delta. In addition, neck blast has been observed in some fields that were infected early on with the blast fungus.
The diseases encountered throughout the MS corn crop continue to be the same. Northern corn leaf blight and southern corn rust continue to be the two most talked about diseases. Annually, as the corn crop matures, NCLB appears to increase since lesions reach their most mature expression. Southern corn rust has been observed in 19 MS counties to date (July 11, 2015). Fields where the disease has been observed typically contain a light dusting of rust.
Numerous fungicide trials were conducted during 2014 to determine the efficacy of specific fungicide products as well as tank mix components at managing Cercospora leaf blight and frogeye leaf spot. Included in this post are ratings as well as yield for eight total trials conducted in Starkville (2) and Stoneville (6) during the 2014 season.
The incidence of soybean diseases in the MS soybean production area has increased over the past 10-14 days. Aerial blight, Cercospora blight, frogeye leaf spot, Septoria brown spot, target spot, and Vein necrosis virus have all recently been observed in commercial soybean fields throughout MS.
Corn diseases have started to be more commonly observed throughout the MS corn production area. Given the time of year in both calendar date and crop stages (post-tassel) several corn diseases are being observed more often. Northern corn leaf blight, southern corn leaf blight, and Diplodia ear rot have all been observed over the last two weeks. Southern corn rust made an appearance earlier than normal; however, the disease is considered to be at extremely low levels at this time even though five counties (Adams, Claiborne, Coahoma, Forrest, Stone) have been observed to contain infected corn plants.
Southern blight, has been found on peanuts in several areas of the state this week. Southern blight is a plant disease that attacks the crown and below ground parts of peanuts. It causes the plant to wilt and die or
I would like to call this a midseason rice update, but in actuality we have rice in Mississippi ranging from one leaf to late boot in places, but most of the rice crop should be at or reaching mid-season. Similar
An agronomic crops field day will be held at Cliff Heaton farms, just east of the intersection of Highway 61 and Highway 6. The field day will be held in the cotton field on the south side of the road. MSU Extension Specialists will be present to discuss topics in corn, cotton, grain sorghum, peanut, rice and soybean.
Questions continue regarding fungicide products to be used at the R3/R4 application timing. The most important decisions should be made based on the specific variety planted in each field since frogeye leaf spot is resistant to the strobilurin class of fungicides meaning that stand-alone strobilurin products are no longer effective against the disease. See the information contained within this blog post regarding fungicide products, effective rates of products in pre-mix combinations and the effectiveness of some fungicides on managing frogeye leaf spot.
Posted June 16, 2015. The low pressure in the Gulf has turned into tropical storm Bill. It is now predicted to impact the coast further south than it was several days ago. Updated forecasts by NOAA indicate that the primary
Choosing a foliar fungicide product for either a common fungicide application at a specific growth stage in the absence of foliar disease or in the presence of disease should be based on the soybean variety planted. Widespread fungicide resistance to the strobilurin fungicides in the MS soybean production system within the frogeye leaf spot fungal population may ultimately change how we use fungicides. Choose a fungicide product based on whether or not frogeye will occur in a susceptible variety rather than choosing a fungicide based on price.
More growers are implementing different “tassel shot” inputs as part of their corn management program. Wet weather and other issues may further complicate application timing of such inputs. This article discusses whether specific timing makes a big difference or not?
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