Late-Season Water Use in Peanut
Water is an issue that has been on everyone’s mind this year and for many of us, it has not been our friend. It was wet early, keeping us from getting in the field for land preparation and planting. Since
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Pheromone Trap Counts, August 14, 2015
Bollworm counts fell some for the second consecutive week, a clear indication that the generation that developed in corn has mostly emerged and we are now in the larval stage of the next generation. Tobacco budworm were similar to the
Cotton Irrigation Termination
As we progress through the second week of August and white flowers continue to climb cotton stalks throughout the state, several calls have come in regarding irrigation termination in cotton. Our general recommendation is as follows: Furrow irrigation: Terminate irrigation
Timing, Sugarcane Aphids and other Harvest Aid Considerations for Sorghum
Many growers in the Mid-South apply a harvest aid to sorghum to facilitate combine efficiency. Although it is possible to harvest sorghum without using a harvest aid, understanding the benefits of usage, along with adverse consequences, will help you implement a practical plan that will enhance your sorghum harvest.
Terminating Spider Mite Sprays in Mid-South Cotton
There has always been a struggle with properly defining the correct cutoff for spider mites in cotton in the Mid-South region. For years we always loosely considered Node Above White Flower 5 (NAWF5 = Cutout) and 650 heat units the
Soybean Disease Update: August 8, 2015
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.
Dectes Stem Borer: Biology, Damage, and Management in Soybeans
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.
Pheromone Trap Counts, August 7, 2015
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
Soybean Loopers and the Effect of Defoliation on Yield
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.
Late-Season Soybean Growth Stages
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
Soybean disease update: July 31, 2015
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.
Pheromone Trap Counts, July 31, 2015
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
When Should I Start Corn Harvest?
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.
Bean Leaf Beetles High in Delta Soybean Fields
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
Controlling the Headworm Complex in Mississippi Grain Sorghum
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.
Reminder – MSU DREC Rice Field Day – July 30, 2015
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
Soybean Scouting Report: 7/20-7/24/2015
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, July 24, 2015
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
Diagnosing Fungicide Phytotoxicity and Telling Apart from Root Diseases
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.
Potassium Deficiency in Cotton
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
Scouting for Sorghum Midge with Confidence
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
Soybean Disease Update: July 18, 2015
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.
Pheromone Trap Counts, July 17, 2015
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
Bollworms Showing up in Soybeans
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
Soybean Scouting Report: 7/13-7/17/2015
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.
