General soybean disease update: July 21, 2012
Numerous foliar diseases in our soybean production system are being observed. Frogeye leaf spot, aerial blight, Cercospora blight, and southern blight have been observed on numerous acres at this time.
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1. By Crop
Bollworm Update Cotton/Soybean
This year started out with most folks expecting higher than usual bollworm numbers due to the mild winter. Couple that with increased corn acres and the perfect storm was thought to be brewing. This is why entomologists get “shifty†when
Southern Corn Rust: Is a Late Fungicide Application Warranted?
Southern rust continues to be a topic of conversation throughout the MS corn production area. Presently, the disease can be observed at low levels in a patchy distribution throughout the Delta. However, there are likely some fields that contain hot spots of the disease. Scouting continues to be necessary in situations where a fungicide application could be beneficial. But, the necessity to apply a fungicide will be dependent on several important variables.
Cotton Aphid Update
Aphids have really been blowing up recently in cotton across Mississippi, so I wanted to give a quick update on our bioassay results from this year. To date, I have not tested a single colony that was susceptible to neonicotinoids.
First Findings of Kudzu Bugs in Mississippi
On Friday July 13th a former graduate student from Clemson was traveling through the Vicksburg, MS area where she stopped at a gas station and noticed six adult kudzu bugs on a vehicle in close proximity to a kudzu patch.
Weed of the Week: Hemp Sesbania
Late-emerging hemp sesbania is problematic at harvest due to its height, woody stem, and the fact that its black seed contaminate grain samples.
Soybean Rust Detected in a Sentinel Plot and Commercial Soybean Fields in George County
Soybean rust has been detected for the first time during the 2012 season in George County in southeastern, MS. Additional information regarding the specific find as well as management scenarios are included in the blog update. Stay tuned for additional information regarding the presence of soybean rust in the MS soybean crop on the blog, at www.sbrusa.net, and through the free telephone hotline (1-866-641-1847) that provides information regarding the presence of soybean rust in AR, LA, and MS and is sponsored by the Mississippi Soybean Promotion Board.
How Soon Did It Rain After You Sprayed?
Over the past week we have been getting a significant amount of rain across most of Mississippi. Unfortunately, most insects don’t mind the rain. Other than spider mites and aphids, we will likely have to continue managing insects in all crops despite the rain.
Drought Monitor and Rainfall Effects on Cotton
Much needed rainfall has been received over the past week to ten days in many areas of the state; however, there are several areas that remain at a moisture deficit. Rainfall in some areas of the state has exceeded 8â€
Rice Disease Update July 13, 2012
This is video update of the current disease situation in rice. Please click on the following link to watch.
Worms in Peanuts
I am getting a lot of calls about various worms in peanuts. In nearly every case, it is a complex of multiple species. It seems that the complex in the Delta region consists mainly of the rednecked peanut worm, granulate
Bacterial Blight of Cotton Update: July 13, 2012
For the second year in a row bacterial blight of cotton has been observed on numerous acres in the MS production system. Compared to 2011, twice as many counties have been observed to contain infected plant material.
Will Abamectin Provide Any Plant Bug Control?
Over the last couple of weeks I have actually gotten quite a few questions about whether or not abamectin alone has any activity on plant bugs. Plant bugs have been light this year to date and spider mites have been
July Supply and Demand Report Shocker
The World Agricultural Outlook Board of USDA released their monthly World Agricultural Supply and Demand Estimates report (WASDE) this morning, July 11. The report revealed what most had feared, a much lower per acre yield than trend would suggest. The
Response of Cotton Varieties to Inoculation with Xanthomonas axonopodis pv. malvacearum in Mississippi
Inoculation trials were conducted during the 2011 season to determine the response of several popular cotton varieties to the bacterial blight organism. The attached blog post is a poster that was presented at the 2012 Beltwide Cotton Conferences that were held in Orlando, FL in January 2012.
R.R. Foil Plant Science Research (North Farm) Center Field Day – July 19, 2012
It has been a number of years since a field day was conducted at the R.R. Foil Plant Science Research center near the campus of Mississippi State University. To that end, a row crop field day will be held on
Southern stem rot or white mold of peanut
Discusses the life cycle, management and identification of white mold or southern stem rot of peanut caused by Sclerotium rolfsii. It includes a section on how to distinguish it from a white mold look-alike. Southern stem rot or white mold
Root-knot Nematode Observed in Some Delta Cotton Fields
Root-knot nematode damaged cotton fields have been observed in at least two fields this season. With the loss of Temik, farmers have had to rely on alternative methods to manage high nematode populations.
Rice Progress and Condition
Rice Acreage Report
USDA released their final planting intensions report today. Mississippi is still reported as having 135,000 acres of long grain rice. Estimated long grain acres in other states are estimated as follows: Arkansas 1,140,000 acres, California 5,000 acres, Louisiana 355,000 acres, Missouri 195,000 acres, and Texas 110,000. The total long grain rice acres in 2012 are estimated at 1,940,000 acres. That is an increase of 146,000 acres or 8% from 2011. Also, this acreage report was 4% higher than the March planting intentions report. This latest acreage report coupled with sluggish export sales has bearish implications on the rice market.
Scouting Cotton for Bacterial Blight
Bacterial blight of cotton has once again been observed in the MS cotton production area. Angular lesions associated with the disease can easily be confused with many other foliar diseases as well as other important issues in cotton. Observe the photos for help in scouting for the disease that until the past two seasons has been a fairly rare occurrence in MS.
Ditch Bank Survey 6/27/2012
Overall, tarnished plant bug numbers appear to be decreasing across the Delta. Several things are contributing to this decline. The biggest factor is that the hot, dry weather is starting to take it’s toll on a lot of the wild
2012 USDA Acreage Report
(Correction to Mississippi cotton acreage change from March has been made) The much anticipated, and likely to be much debated, 2012 Acreage report from USDA was released this morning (June 29). Nationally, the report bumped up the number of acres
Spider Mite Update: Podcast
spider mite update6_29_12 Click link to view Spider Mite Article by Scott Stewart, University of Tennessee: http://news.utcrops.com/2012/06/spider-mites-on-the-increase/
Fall Armyworms in Soybeans and Peanuts
We have gotten multiple calls over the last week about fall armyworms in soybeans and peanuts. In every case, it has been a situation where people got behind on grass control when we were getting a lot of rain a couple weeks ago. In those situations, they have sprayed the grass during the last two weeks with products such as Select or Roundup that are relatively slow acting. A lot of the grass is infested with grass-strain fall armyworm and big worms start moving over into the crop about a week to ten days after the application when the grass starts to die.
Cotton Irrigation and Plant Growth Regulator Applications
Up until this week, much of the crop throughout the state appeared to be in good shape. However, the onset of high heat combined with the lack of rainfall has made this a pivotal week for cotton in many areas
