Mississippi Kudzu Bug Update: 8/14/2013
Seems like we are adding new counties every week. We are now at 24 counties total with 16 of those having kudzu bugs found in soybeans. At this time we have actually treated a field or two for kudzu bugs in
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August Supply and Demand Report Recap
Soybeans Soybeans also saw bullish news in the August WASDE report. Both planted and harvested acres were revised down by half a million acres from last month’s projections. Soybean yields were also revised down by 1.9 bu/acre to 42.6 bu/acre.
Early Leaf Spot of Peanut
Synopsis: Is caused by a fungus, Cercospora arachidicola. Defoliates infected leaflets fairly quickly. Is one of the reasons, along with late leaf spot, for the development of the traditional two week spray schedule in established peanut growing areas (see Figure
Market Update – Aug 9, 2013
Cereal Grains & Soybeans Prices continued their downward slide for corn and wheat this week. Favorable weather has helped to keep new crop corn and soybean conditions rated 60-65% good or excellent. Meanwhile, many producers continue to empty grain bins
Not Everything is as it Seems: Fungicide Phytotoxicity and Plant Diseases
Phytotoxicity following a foliar fungicide application is not a commonplace occurrence in our soybean production system. In certain situations, the symptoms that express themselves when a fungicide application is made in the heat of the day can manifest themselves similar to characteristic foliar disease symptoms. Sudden death syndrome (SDS) is a common occurrence from the standpoint that we observe the disease annually but rarely does it impact yield and in fact we normally suggest that SDS simply means you’ve raised some great soybeans in that particular field. Keep in mind that SDS will only occur on light soil texture classes and normally not across an entire field as a situation such as phytotoxicity could.
Mississippi Rice Progress – August 9, 2013
The rice crop in Mississippi continues to move forward. In addition to several acres moving to the heading growth stage, there are fields that are being drained. Draining typically means harvest is two weeks away. I am anxious to see
Insect Pheromone Trap Counts, August 9, 2013
For the second week in a row, tobacco budworm counts are higher than average for this time of year. Bollworm catches were fairly typical for this time of year, so in non-Bt crops where both pests develop (like soybean), a
Rice Leaf Blast Detected in a Blast-Susceptible Variety in Bolivar and Sunflower Counties
Blast of rice was positively confirmed in three rice fields on Tuesday afternoon. Blast lesions are specific in that the generally form a diamond-shaped lesion on the leaf.
Foliar Leaf Spots Observed in Cotton
Cotton leaf spots have been observed in several fields again this year shortly after flowering. Positively confirming the particular disease is the most important event to determine a potential management scenario. The difference between the members of the “potash complex” as well as target spot are distinct, but numerous lesions need to be observed to positively identify the causal organism.
Kudzu Bug Update: 8/3/2013
This week we added four new counties for positive finds of kudzu bug. All finds were in soybeans. This weeks new counties were Benton, Noxubee, Lawrence, and Issaquena.
Cotton Insect Update
Several insect pests have started to show up in cotton over the last couple of weeks. In most cases in the Delta, applications have shifted from targeting plant bugs to targeting plant bugs plus at least one other pest. In most of those situations, tank mixes with multiple insecticides are needed to control the whole complex. In this update, we will attempt to cover all of the current pests and highlight some control options.
Cotton Irrigation
Cotton irrigation has been on-going for the past four weeks and will likely continue three to four weeks depending on weather conditions. Watering schedules vary from grower to grower and field to field. In addition, watering schedules vary depending on
Stink Bugs Picking Up in Soybeans
With the exception of the last three years, stink bugs have always Mississippi’s number one insect pest of soybean. There are many species of stink bugs in MS soybeans but the three predominate species are Southern Green, Green, and Brown
Insect Pheromone Trap Counts August 2, 2013
Trap counts for tobacco budworm were sharply higher this week in the MS Delta for the first time this year. Bollworm counts were also somewhat higher in the Delta compared to last week. However, from a historical perspective bollworm counts
Insect Pheromone Trap Counts, July 26, 2013
As expected based on field observations, trap counts for bollworm were higher this week. They are not higher than historical averages, but are definitely high enough to cause economic infestations in some fields. Tobacco budworm pressure exists, but remains low, so most Heliothines
Soybean Frogeye Leaf Spot: Management Decisions for the Disease Following an R3/R4 Strobilurin Application
Frogeye leaf spot continues to be one of the main foliar diseases observed in the 2013 soybean crop. In several situations a fungicide has applied and frogeye continues to be an issue. In the current blog post several pieces of information are included to help aid decisions in whether or not a particular variety may be susceptible or resistant to frogeye. In addition, a table of the labeled fungicide products for use to prevent yield loss as a result of frogeye leaf spot are included.
Bollworm Applications Starting in Soybean
With many consultants reporting flushing high numbers of moths over the last 7-10 days, bollworm larvae are beginning to turn up at treatable levels in some fields now. Over the last couple days I am hearing reports of treatments going out
Mississippi Rice Progress – July 19, 2013
The 2013 Mississippi Rice Crop continues to progress. In general, this week really began the heading stage, with heads emerging on about 10 to 15% of the crop. Based on the crop planting progress, heading for the crop as a
Mississippi Weed Science Roundtable
You are cordially invited to attend the 21st Annual Mississippi Weed Science Roundtable.
Bollworm Flight Later Than Normal But Now Starting
Usually in Mississippi the major bollworm flight coming off of corn usually ranges from June 25-July 7th on average. We started getting our first calls out of the south Delta this week. Many consultants are reporting scattered worms and eggs
Pheromone Trap Counts, July 19, 2013
Bollworm and tobacco budworm counts are lower in the Delta region this week compared to last week, while this week’s trap catches in northeastern MS are similar to last week. As can be seen in the table, catches of both species
Corn Disease Update and Late Fungicide Suggestions: July 19, 2013
Corn fungicide questions continue to be made even in situations where corn has reached dent. In general, making a fungicide application at dent or later corn growth stages only pays off if excessive disease pressure is observed prior to the fungicide application being made. Moreover, making a fungicide application to a foliar disease tolerant hybrid will likely not pay off since the genes present in the hybrid should be relied on for preventing yield loss as a result of foliar disease.
Soybean Disease Update and Frogeye Leaf Spot Fungicide Suggestions: July 17, 2013
Over the past two weeks increased reports of soybean diseases have been made from throughout the state. In addition, in southern MS, two more counties have been confirmed to be positive for soybean rust.
Cotton Layby Herbicides
Over the last couple of weeks numerous calls have come in regarding layby herbicide programs. There are several options for layby programs and many have their own favorite program that they have been successful with in the past. I will
Reminder: Mississippi State University/Monsanto Company Pigweed Field Day July 17
The Mississippi State University Extension Service in cooperation with Monsanto Company will host a pigweed field day near Robinsonville, MS on July 17, 2013. The field day location is just north of Tunica National Golf Course. A more detailed map
