There have been numerous calls and questions about Dectes Stem Borer over the last few years. It seems that numbers are increasing each year. This is not surprising when you consider the biology of the insect coupled with an increase in soybean acres in MS.
Bollworm pheromone trap counts finally started to go down a little this week, likely signalling the end of the generation that passed through corn. However, enough moths were still caught to potentially cause economic losses in some areas. Tobacco budworm
We have been getting calls on loopers showing up in soybean for about 2 weeks. In recent days there have been reports of defoliation exceeding 20% or numbers exceeding threshold in some areas in the central to southern part of the state. The bulk of our soybean loopers typically show mid to late August or even into September so this is a little early but certainly not unusual. Soybean loopers are migratory and work their way north each year from southern latitudes. Early arrival could be due to a number of reasons.
Corn harvest is begining across the Delta and early-planted soybean harvest won’t be far behind. Identifying late-season soybean growth stages is important for a number of considerations, such as irrigation termination and harvest aid/desiccation timing decisions. Growth Stage R6- Full
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.
Bollworm moth catches remained strong for another week as the generation that passed through corn continues to emerge. Continue to monitor for bollworms in all susceptible crops throughout the state. Tobacco budworm catches were a little higher in a few
Corn harvest will be upon us soon and anticipation is building. However, we still need to get this corn crop out of the field and safely deliver it to market. The optimal timing to successfully harvest your corn crop may vary depending on several factors.
Over the last week we have been getting a lot of calls about extremely high bean leaf beetle numbers. Most calls have come from the Northwest Delta region of the state. We have actually made bean leaf beetle targeted sprays on a number of acres in recent days. Yield loss is caused by defoliation and less frequently by pod feeding
There have been numerous reports lately of high numbers of corn earworm and sorghum webworm in grain sorghum. I have heard some reports of numbers as high as 10X threshold. It is critical to scout and treat as needed to control these pest. There are three species that make up the headworm complex in grain sorghum; the corn earworm (bollworm), fall armyworm, and the sorghum webworm.
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
Week 5 Scouting Report Graduate Student Nick Bateman is running a weekly insect scout line in soybeans for part of his PhD project. We will be reporting his numbers weekly on the blog. Only insect pest that are being found in
Pheromone trap counts for bollworm were stable this week in the Delta while rising in the Northeastern region of Mississippi. Based on several weeks of fairly high bollworm moth catches, protection is likely needed in many fields against bollworm throughout the
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.
Over the past several weeks blooms have become commonplace in most Mississippi cotton fields. Many of these fields were blooming at or just after the 4th of July. Once cotton begins to square and more so once bloom begins, nutrient
When it comes to scouting for sorghum midge I have found that very few people have the confidence to accurately find them. Most believe if they are not finding them that they must be missing them or doing something wrong. The
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.
After rising for several weeks, bollworm pheromone trap counts decreased some in the southern Delta region while slightly increasing in the hills and North Delta regions this week. This likely indicates that we are at peak moth flight for this
In just the last 3-5 there have been several reports of bollworms now showing up at threshold numbers in soybeans in the Delta region of the state. In many other areas of the Delta folks are reporting flushing extremely high
Stink bugs consisted of Brown, Green, and Southern Green stink bugs, with Green and Southern Green Stink bugs making up 75% of the total stink bugs caught. Loopers are starting to show up in R3 and later soybean in all counties listed but are in low numbers. We also were flushing numerous corn earworm moths in several fields in the Delta region.
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.
Early this spring we received a call from a grower requesting assistance irrigating a new property he had acquired. Historically the property had been in a rice/soybean rotation. As you can see by the elevation map, the property was not
Mississippi State University Extension has planned two soil moisture sensor field days for July and early August. Attendees will view demonstrations and presentations of the agronomic advantages of utilizing soil moisture sensors to trigger row crop irrigation presented by Dr.
There will be an impromptu sorghum midge scouting field day at the MSU Delta Research and Extension Center in Stoneville tomorrow (July 14, 2015) at 8:00 am. We will meet at the Capps Building at 8:00 am and then travel directly
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.
Tarnished plant bug populations have continued to be high over the last couple weeks in the Delta. A lot of the cotton is at or near the bloom stage when it is most attractive to plant bugs.
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