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Management Practices to Reduce the Development of Fungicide Resistance in Soybean: Part I, Improving Disease Management Practices

🕔16:12, 29.Mar 2014

Fungicide resistance has continued to be a hot topic during the off-season. Since 2010, fungicide resistance within the frogeye leaf spot fungal population has been documented in several states including Mississippi. To prevent the development of fungicide resistance from increasing several important steps can be followed. Several of these specific topics will be outlined in this three part series regarding fungicide resistance.

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Early Leaf Spot of Peanut

Early Leaf Spot of Peanut

🕔00:30, 12.Aug 2013

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

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

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 Rust Detected in a Soybean Sentinel Plot in Pearl River County

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

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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Early Season Corn Diseases and Non-disease Observations

Early Season Corn Diseases and Non-disease Observations

🕔17:32, 24.May 2013

Several common diseases have been observed in the MS corn crop over the past week. Common rust and northern corn leaf blight are typical diseases in corn and are likely the result this early in the season due to the cooler than normal temperatures and ample rainfall we’ve received over the past month. But, with the generally atypical environment we’ve experienced this season the likelihood of more non-typical foliar diseases occurring is potentially increased. Proper diagnosis prior to a management decision is therefore increasingly important.

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2013 Scout Schools Set

🕔13:55, 22.May 2013

The 2013 Scout School dates have been set. The first will be June 4th from 9:00 a.m -12:00 p.m. at the Delta Research and Extension Center in the auditorium of the main building. The last one will be on the main campus of Mississippi State University in the Clay Lyle Entomology Building conference room.

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Corn Disease Calendar

🕔14:45, 20.Apr 2013

Use the information contained in this blog post to aid in determining the specific disease in field corn. Scouting corn for the presence of disease is difficult and can be confusing since some foliar diseases appear similar to one another such as gray leaf spot and southern corn leaf blight. In addition, particular diseases are more important depending on the particular growth stage when they are encountered.

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Wheat Disease Update: March 23, 2013

Wheat Disease Update: March 23, 2013

🕔11:38, 23.Mar 2013

Additional stripe rust has been detected throughout the MS Delta over the past two weeks. Scout fields for the presence of stripe rust to determine the extent of the infection in the wheat production area. Keep in mind that stripe rust will appear different on younger wheat plants still in the early vegetative stages than it does on more mature wheat plants.

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Wheat Stripe Rust Detected in Mississippi

Wheat Stripe Rust Detected in Mississippi

🕔12:34, 28.Feb 2013

Stripe rust was positively confirmed in two wheat fields near Greenwood, MS on Monday, February 25, 2013. At this time, with the fluctuating environment we are observing the situation prior to making a management decision since cooler temperatures may reduce the likelihood of spread within the two fields. In addition to information regarding the current situation information is included to tell the difference between leaf, stripe, and stem rust in our production system.

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Soybean Rust Detected in a Sentinel Plot and Commercial Soybean Fields in George County

Soybean Rust Detected in a Sentinel Plot and Commercial Soybean Fields in George County

🕔06:34, 16.Jul 2012

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.

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Scouting Cotton for Bacterial Blight

Scouting Cotton for Bacterial Blight

🕔11:26, 29.Jun 2012

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.

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Late Season Corn Irrigation and Termination

Late Season Corn Irrigation and Termination

🕔17:35, 22.Jun 2012

This season’s corn crop, particularly that planted in early March, is extraordinarily early. However, it will still need additional irrigation or rainfall to finish the crop out. This article discusses crop progress and methods to schedule and terminate irrigation water for corn.

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Corn Disease Update: June 7, 2012

Corn Disease Update: June 7, 2012

🕔22:27, 7.Jun 2012

Over the past few days reports of northern corn leaf blight and gray leaf spot have increased in the MS corn crop. However, common rust is still the only rust that has been observed in MS. Keep in mind that in some cases common rust, on the lowest leaves in the corn canopy, can take on the appearance of southern rust.

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Corn Hail Damage and other Storm Issues

Corn Hail Damage and other Storm Issues

🕔17:01, 27.May 2012

Corn fields in several areas of the state unfortunately took a beating from hail and wind associated with storms May 20-22. Several different types of damage may have occurred depending upon the type of storm, including hail damage, lodging and green snap. This article will describe how much damage may have occurred.

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Corn Diseases to Watch for While Scouting Corn

Corn Diseases to Watch for While Scouting Corn

🕔11:58, 25.May 2012

Scouting corn can be especially challenging. Looking for disease within the corn canopy can take a tremendous amount of time and should be done a little different depending on the particular crop stage encountered. Once an ear has set (post-tassel) focusing on the ear leaf and above is generally the best scouting method since protecting the ear leaf is important. I’ve included several descriptions and pertinenent information regarding some of the more commonly encountered diseases in our corn production system.

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2012 Insect Scout School Dates Set

🕔15:54, 15.May 2012

The insect scout schools for 2012 have been set.  At each scout school we will go over biology, thresholds, and scouting techniques for each of the major pests of cotton, soybean, and corn.  This is a great refresher for the

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Soybean Seedling Disease Identification: Pythium Damping-off and Root Rot

Soybean Seedling Disease Identification: Pythium Damping-off and Root Rot

🕔09:37, 3.May 2012

Environment is the key component in the expression of every plant disease.  Especially when considering the occurrence of seedling diseases we typically have a situation in place where inoculum is present in the soil, more than likely in high quantities,

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2012 Mississippi Soybean Sentinel Plot Program

2012 Mississippi Soybean Sentinel Plot Program

🕔17:47, 13.Apr 2012

Sentinel plots will continue to be used to monitor for yield-limiting diseases throughout MS during the 2012 season. Even though in the past sentinel plots have more typically been used to monitor for the presence of soybean rust, the plots will be used to monitor for all economically important soybean diseases.

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Wheat Disease Update: March 29

Wheat Disease Update: March 29

🕔23:27, 29.Mar 2012

Wheat diseases continue to be identified throughout the MS production area. Barley yellow dwarf virus, leaf rust, powdery mildew, and stripe rust are all present in limited situations in several counties.

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Bollworm, Budworm and Beet Armyworm Trap Catch, 5-19-11

Bollworm, Budworm and Beet Armyworm Trap Catch, 5-19-11

🕔15:50, 20.May 2011

Weekly pheromone trap captures from Northeast, Central and Delta regions of Mississippi are reported. Light to moderate bollworm pressure with very few tobacco budworms and beet armyworms caught during the week of May 12 to 18.

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How to deal with Glyphosate Resistance and Weed Issues in Corn

How to deal with Glyphosate Resistance and Weed Issues in Corn

🕔12:45, 21.Apr 2011

Increasing populations of glyphosate-resistant and other herbicide-resistant weed species demand we adapt our corn weed control systems to address specific issues and prevent new ones. This may require you to implement strategies for a specific weed, plan on multiple herbicide applications, and improve your application timing.

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Will Corn Sustain Injury from Sand-Blasting?

Will Corn Sustain Injury from Sand-Blasting?

🕔16:16, 15.Apr 2011

Strong winds sand-blasted young, emerged corn plants in many fields this week. Fortunately, corn can sustain considerable vegetative damage during early growth stages without limiting development or yield.

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Identifying Glyphosate Drift Injury on Wheat Plants

Identifying Glyphosate Drift Injury on Wheat Plants

🕔18:18, 23.Mar 2011

Identifying off-target herbicide injury may be difficult when a definitive pattern is not readily apparent, substantial acreage is involved, or distance is considerable. This article gives some guidelines and photos to help identify glyphosate drift on wheat, so that you can manage appropriately.

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