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Allen, T.

East Mississippi Soybean Variety Trial Report

🕔11:38, 24.Dec 2013

Attached in this blog post are the variety trial results from the North Mississippi Research and Extension Center in Verona, MS. Harvested yield as well as variety response to natural infection from Cercospora blight and frogeye leaf spot are included in the associated tables.

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Soybean Viruses Cause Important Diseases too

🕔09:21, 27.Sep 2013

Virus-infected soybean material has been observed almost statewide this season. The high numbers of bean leaf beetles can be blamed for some of the observed viruses; however, bean leaf beetles are not the only insects that can vector soybean viruses between plants. This specific blog update presents information on the three most commonly encountered soybean viruses in the MS soybean production system.

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Soybean Disease Update: September 21, 2013

🕔15:25, 21.Sep 2013

Soybean disease questions still consider to be raised throughout MS. Even though soybean rust has been detected in 45 counties to date it appears we will have another season where yield losses as a result of soybean rust will be extremely limited and may only have occurred in a handful of fields. When making plans for next year consider sampling for nematodes in light textured soil classes. In addition, planting a frogeye susceptible variety in several years in a continuous soybean system may increase the likelihood of frogeye causing substantial yield loss.

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Managing Late Season Stink Bugs in Mississippi Soybean

Managing Late Season Stink Bugs in Mississippi Soybean

🕔17:44, 14.Sep 2013

Over the last month we have had numerous questions about terminating stink bug applications in late season soybeans. Typically we manage stink bugs until near harvest but there are several things to consider before making an application to control stink bugs in beans beyond R6 growth stage.

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Storing Harvested Corn and what to Expect from High-Moisture Corn

🕔11:45, 11.Sep 2013

Numerous questions have come in over the past few weeks regarding proper grain storage. Maintaining moisture below 15% is extremely important to reduce the likelihood of fungal growth. However, not all fungi that develop on harvested grain are problematic and toxin production is not something that can occur overnight. Even though fungi such as Aspergillus flavus can produce a green fungal growth on harvested grain not all fungi that grow on grain can be considered to be A. flavus.

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Sudden Death Syndrome Look Alike Part I: Red Crown Rot

🕔10:48, 5.Sep 2013

Red crown rot has been identified in additional fields in east MS throughout the 2013 season. Prior to 2013 only two counties had been identified as having red crown rot. However, three additional counties have been added this season (Clay, Newton, Union). Red crown rot symptoms can be misdiagnosed as several other diseases, including sudden death syndrome (SDS).

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Foliar Soybean Disease Update: August 31, 2013

🕔09:12, 31.Aug 2013

Foliar diseases of soybean continue to be observed throughout the MS soybean production system. Over the past week additional counties containing soybean rust have been observed throughout the state. Stay tuned to information on the Crop Situation Blog regarding additional counties with soybean rust infected plant material should management suggestions change.

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Frogeye Leaf Spot Fungicide Preliminary Data (Updated 8/30/2013)

Frogeye Leaf Spot Fungicide Preliminary Data (Updated 8/30/2013)

🕔09:37, 29.Aug 2013

Numerous questions over the past few weeks regarding how well certain fungicide chemistries are managing frogeye leaf spot. Attached please find preliminary rating data from Starkville and Stoneville on how well particular products are managing observable symptoms of frogeye leaf spot. Additional data to follow as we continue to rate plots.

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Soybean Disease Update: August 18, 2013

🕔21:27, 18.Aug 2013

Numerous diseases continue to be reported from throughout the MS soybean production area. Frogeye leaf spot continues to be the main foliar disease observed. Additional soybean rust was reported from Adams County this past week. However, since low levels of the disease continue to be reported the suggestion remains that farmers wait and watch the available information and allow soybean to get as close to reproductive developmental stages before making a fungicide application.

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Not Everything is as it Seems: Fungicide Phytotoxicity and Plant Diseases

🕔17:45, 9.Aug 2013

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.

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Rice Leaf Blast Detected in a Blast-Susceptible Variety in Bolivar and Sunflower Counties

🕔22:10, 8.Aug 2013

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.

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Foliar Leaf Spots Observed in Cotton

🕔11:21, 3.Aug 2013

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.

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Soybean Frogeye Leaf Spot: Management Decisions for the Disease Following an R3/R4 Strobilurin Application

🕔20:17, 28.Jul 2013

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.

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Corn Disease Update and Late Fungicide Suggestions: July 19, 2013

🕔10:10, 19.Jul 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.

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Soybean Disease Update and Frogeye Leaf Spot Fungicide Suggestions: July 17, 2013

🕔14:22, 17.Jul 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.

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Soybean Minute Radio Program

🕔11:30, 12.Jul 2013

The Soybean Minute is a new radio program that can be heard on the Mississippi AgriNews Network. These reports, sponsored by the Mississippi Soybean Promotion Board and the United Soybean Board, offer the latest information on soybean production in Mississippi.

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Soybean Rust Detected in a Soybean Sentinel Plot in Pearl River County

🕔19:50, 11.Jul 2013

Once again this season soybean rust has been detected early in July. A single infected leaf was discovered in a soybean sentinel plot in Pearl River County on Tuesday, July 9, 2013. Historically this is 4 days earlier than last season (2012) and 2 days earlier than the earliest occurrence of rust in MS that occurred in 2007 on kudzu. At present, no additional management scenarios are necessary. We continue to scout to determine how widespread infection may be across south MS.

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Southern Corn Rust Detected in MS Corn Crop

🕔20:37, 5.Jul 2013

Extremely low levels of southern corn rust were observed in a single corn field in Humphreys County on Tuesday afternoon. Southern rust can be a devastating disease if left unchecked and when conducive conditions prevail (hot, humid environment).

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Soybean Disease Update: July 5, 2013

🕔19:45, 5.Jul 2013

Over the past two weeks soybean diseases have become apparent throughout the MS soybean production system. Isolated reports of frogeye leaf spot in reproductive maturity soybean fields as well as Fusarium wilt have been on the rise. Stay tuned to the Mississippi Crop Situation Blog for disease monitoring situations, including maps of counties where soybean rust and strobilurin-resistant frogeye have been made throughout the 2013 season.

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Mississippi Rice Progress – June 28, 2013

🕔13:48, 28.Jun 2013

Favorable weather conditions continue to help this crop progress.  Major problems outside of drift have been few for most of the spring; however, a few different issues have come up this week.  Dr. Jeff Gore was called to help address a

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Corn Foliar Disease Update: June 26, 2013

🕔16:30, 26.Jun 2013

Corn diseases continue to be a hot topic throughout the MS corn production area. Most field calls have been regarding common rust as well as northern corn leaf blight. However, over the past two weeks numerous calls regarding nutrient and irrigation stresses have been answered that were initially thought to be disease. In addition, with the recent information from Louisiana regarding the observation of Goss’s wilt in LA (a rare event in their production system) agriculturists should know that disease as well as crop stresses can be initially misdiagnosed as diseases that are not normally present in our production system such as Goss’s wilt.

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Double Crop Soybean: Seeding Rates and Seed Treatments

🕔10:42, 22.Jun 2013

At this point of the season, we still have some acres of soybean yet to be planted. The majority of those acres will be double cropped soybean behind harvested wheat. Given the environmental conditions that we typically expect during this

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Automatic Tassel (VT) Fungicide Applications in Corn: Should You be Doing One?

🕔08:24, 15.Jun 2013

Automatic foliar fungicide applications are still widely discussed. However, data from university-based programs suggests waiting for foliar diseases that could ultimately reduce yield before making a foliar fungicide application is more economically advantageous.

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How to Tell Northern Corn Leaf Blight Apart from Urea Burn or Some Other Malady

🕔21:21, 12.Jun 2013

Numerous reports of urea injury producing symptoms similar to northern corn leaf blight have been made over the past several weeks. Determining the difference between the two issues on a corn leaf can be difficult. Numerous photos as well as a comparison table of the differences between the two issues are included in the post.

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Corn Disease Update: June 7, 2013, and Specific Information Regarding Northern Corn Leaf Blight

🕔08:03, 8.Jun 2013

Northern corn leaf blight and common rust continue to be identified in corn fields throughout the south Delta. Determining the specific corn hybrids planted in each field is an important first step every season. For the most part, save for a couple of fields, NCLB has still been detected at extremely low levels (= 1 lesion per leaf per plant).

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