Podcast: Cotton Insect Update 7/31/19
Click the icon below to listen to the latest podcast where Angus Catchot, Jeff Gore, and Don Cook discuss the current insect situation in cotton around the state.
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Scouting
Cotton Leafroll Dwarf Virus: First Report in MS in 2019, Identification and Management Considerations
A lot of information regarding a new cotton virus, cotton leafroll dwarf virus (CLRDV), has been swirling around the internet since last fall. A low number of CLRDV-positive samples were detected from Coahoma County, MS last week. The current blog post contains information regarding the virus.
The Principles of Plant Pathology: The Response of the Host
Plant pathogens require a specific set of factors to occur within a given period of time for disease to occur. Oftentimes the disease triangle is the main image behind plant pathology, when a susceptible host, plant pathogenic organism and the environment work together to cause a plant disease. Even though the environment is most often considered the main factor behind the occurrence of plant diseases, the host and the response of the host can also be factored into the occurrence of plant diseases. Defining the different responses of the host (e.g., susceptible versus resistant) is important to understand the level of disease that can occur on a given host.
2018 Soybean OVT Foliar Disease Evaluations: Maturity Group V
The MSU OVT soybean locations were evaluated for disease during the 2018 season. Multiple diseases were evaluated at multiple locations and are provided in this post. Cercospora blight, Septoria brown spot, southern blight, and target spot were the most commonly encountered diseases during the season.
Corn Disease Update: June 14, 2019
Most of the corn disease questions over the past week to 10 days have had to do with diseases in the lower canopy. Common rust has been one of the most commonly observed diseases and continues to be observed once plants reach reproductive growth stages.
How to Determine Growth Stages of Young Corn or Sorghum
Vegetative growth stages of corn or sorghum are determined by counting the number of fully emerged leaves with leaf collars present. This methodology can be used to anticipate growth and determine appropriate timing of many management decisions, including herbicide application, sidedress fertilizer, etc….
Impact of Rainfall on Insecticide Seed Treatments in Rice
The 2019 planting season has gotten off to a rough start with all of the rain. Today (Thursday May 9), we have gotten well over 4 inches of rain in the last 24 hours in Stoneville and a lot of
2019 Agronomic Crop Scout Schools
Mississippi State University will be hosting 2 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.
Bifenthrin Alternatives for Brown Stink Bugs in Corn?
Brown stink bugs have been treated on a fair number of acres of corn in the Delta this year. With the loss of Methyl, there are not a lot of good choices to control this pest in corn. We are
FREE Soybean Cyst Nematode Testing Through August 30, 2019
The Mississippi State University Extension Service is offering free Soybean Cyst Nematode testing through August 30, 2019. For details click the links below. Soybean Cyst Nematode Sample Submission Form SCOUTING AND SOIL TESTING FOR SOYBEAN CYST NEMATODE
Potato Leafhoppers in Soybean
Every few years we have a surge of potato leafhopper calls in soybean in MS. This is one of those years. Potato leafhoppers strongly prefer smooth leaf soybean varieties and I suspect that the calls increase on years where popular
Corn Disease Update: June 26, 2018
Over the past week the corn disease situation in MS has changed. Several foliar diseases are starting to be observed in our production system. However, the vast majority of the leaf spots present are not yield-limiting issues.
Common Questions, Myths, and Facts About Soybean Insect Control in MS
This is a recycled article from 2012 and slightly updated but it fits well with recent calls. Sentences in italics have been added or updated since original posting. We have some of the earliest beans that are R3/R4 getting fungicide applications
Reminder: 2018 Agronomic Scout School Dates
Mississippi State University will be hosting 2 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.
Redbanded Stink Bug Ditch Bank Survey 4/15/2018
In 2017, we were able to accurately predict the threat of RBSB based on sampling ditch banks in the spring. Every year we sample ditch banks across the state to make collections of various insect pests. With most pests, such
Cool, Wet Weather, and Residue Brings Slugs
I have recently received a few call about slugs in corn. I suspect this will increase in more crops as planting continues and they begin to emerge. Slug problems usually start on corn first, then move to soybeans, then cotton in our area.
Cotton Target Spot: 2017 Lucedale OVT Disease Rating Results
Observations of target spot were made in the MSU OVT location conducted in Lucedale, MS during 2017. Included in this blog post are the observations of disease on leaves as well as the percent defoliation from all 52 varieties included.
2018 County Extension Meeting Schedule
The Mississippi State University Extension Service will be hosting a number of county row crop extension meetings in the spring of 2018. Each meeting will cover issues specific to the area and will provide information on weeds, insects, disease, economics,
2017 North MS Maturity Group IV and V Variety Trial Report
A Maturity Group IV and V variety trial was conducted in Verona, MS at the NMREC during the 2017 season. Yield and disease data are included in the attached report for all entries contained in the trial (RoundUp, Conventional and LibertyLink).
Soybean Stem Canker: 2017 Visual Observations from the Clarksdale OVT
Over the past several weeks numerous comments have been made regarding the validity of the harvested yield data from the Clarksdale OVT location. Several varieties were observed to be “poor performers” based on low yield. The Clarksdale OVT was observed to contain severe stem canker in multiple variety entries. The current blog post contains comparisons between the visual observations of stem canker (0-9 scale) and harvested yield from the 2017 MSU OVT entries at the Clarksdale location.
Foliar Soybean Disease Update: August 19, 2017
The disease situation in MS soybean fields has certainly increased over the past 7-14 days. Active aerial web blight, Cercospora blight, soybean rust, and target spot remain the most commonly observed diseases over much of the production area.
Recorded Video From ArkLaMiss Redbanded Stink Bug Forum
The ArkLaMiss Redbanded Stink Bug Forum was a huge success. There were numerous attendees present and many more who live streamed. Click the following ling to watch the recorded version. ArkLaMiss RBSB Forum
ArkLaMiss Emergency Forum on Redbanded Stink Bug (Update with Link and Agenda)
Updated on Tuesday August 15 for the Meeting on August 17 at 2:00pm The link to join the live feed is : www.uaex.edu/live During the live stream: Questions can be sent via text to: (662)394-1919 Tentative Agenda: 1:30-2:00 – Registration 2:00-2:10
Soybean Rust Update: August 5, 2017
Yesterday, light soybean rust infection was observed in Noxubee County, MS in soybean plants beyond the R5.5 growth stage. The specific information in this blog post should serve as an update to the soybean rust disease situation as well as including some general guidelines with regards to potential disease management scenarios.
Redbanded Stink Bug Update 7/21/2017
We saw a surge in RBSB numbers a few weeks ago into March planted soybeans that were approaching R6 growth stage but since then populations have moderated. Just in the last few days we are now seeing another big surge moving into
