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Allen, T.

2020: Response of Cotton Varieties to Inoculation with Xanthomonas citri pv. malvacearum, the Causal Organism of Bacterial Blight

2020: Response of Cotton Varieties to Inoculation with Xanthomonas citri pv. malvacearum, the Causal Organism of Bacterial Blight

🕔15:45, 30.Nov 2020

Response of the cotton varieties contained within the 2020 Official Variety Trial to bacterial blight following evaluations conducted on inoculated plots from Stoneville, MS are included in this blog post.

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UPDATE: 2020 Soybean Variety Demonstration Program Summary

UPDATE: 2020 Soybean Variety Demonstration Program Summary

🕔11:06, 23.Nov 2020

When previously posted, two locations from this year’s program had yet to be harvested. Since that time, harvest has been completed and the link below has been updated to reflect the addition of these data. As a reminder, the annual

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2020 Soybean Stem Canker Inoculated Variety Trial Evaluations

2020 Soybean Stem Canker Inoculated Variety Trial Evaluations

🕔15:41, 20.Nov 2020

The cultivars contained in the Mississippi State University Official Variety Trial (OVT), as well as several additional cultivars, were field-evaluated for their susceptibility/resistance to stem canker. Trials were conducted in Stoneville with toothpick-inoculated plants during the 2020 season. Tables contain the average of the field observations (on a 0-9 scale) as well as an assessment of resistance to stem canker (R, MR, MS, S) based on the evaluations conducted.

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2020 MSU Corn Hybrid Trial Disease Evaluations – Non-Irrigated Locations

2020 MSU Corn Hybrid Trial Disease Evaluations – Non-Irrigated Locations

🕔09:46, 20.Nov 2020

Non-irrigated locations containing the MSU official corn hybrid trials (OHT) were evaluated for foliar diseases during the 2020 season. Curvularia leaf spot and southern corn leaf blight were the two most commonly observed diseases. Little if any northern corn leaf blight (NCLB) was observed; however, where observed the evaluations were captured and are contained in the associated tables from each location. In addition, and when present, lodging was evaluated on a percent scale to capture any meaningful differences between hybrids. Presently, the evaluations from the non-irrigated locations (n=6) are included in the current post.

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2020 MSU Corn Hybrid Trial Disease Evaluations – Irrigated Locations

2020 MSU Corn Hybrid Trial Disease Evaluations – Irrigated Locations

🕔15:33, 16.Nov 2020

Locations containing the MSU official corn hybrid trials (OHT) were evaluated for foliar diseases during the 2020 season. Curvularia leaf spot and southern corn leaf blight were the two most commonly observed diseases. Little if any northern corn leaf blight (NCLB) was observed; however, where observed the evaluations were captured and are contained in the associated tables from each location. In addition, and when present, lodging was evaluated on a percent scale to capture any meaningful differences between hybrids. Presently, the evaluations from the irrigated locations (n=4) are included in the current post.

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2020 Soybean Variety Demonstration Program Summary

2020 Soybean Variety Demonstration Program Summary

🕔14:58, 10.Nov 2020

The annual MSU Extension Soybean Variety Demonstration Program is conducted using a set of varieties with proven performance. These varieties are grown in a production setting on various soils and management systems around the state. The sets for 2020 represented

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Mississippi Soybean Rust Foliar Disease Update: September 5, 2020

Mississippi Soybean Rust Foliar Disease Update: September 5, 2020

🕔15:11, 5.Sep 2020

Soybean rust has been observed to be much more widespread throughout the MS soybean production area this year. Normally, soybean rust is a late-season disease that goes unnoticed and ends up being observed at growth stages when the disease does not likely reduce yield (R6.5+). Soybean rust has been observed for the last three weeks across MS in soybean fields that range from R5.5 to R7. In some specific parts of the state management options have already been suggested due to the rust pressure in adjacent fields.

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Identifying Late Season Soybean Growth Stages

Identifying Late Season Soybean Growth Stages

🕔14:00, 21.Aug 2020

As we move closer to maturity, there are many decisions to be made on termination timing of various management practices. At this time of the season, we can use late season soybean growth stages as a guide to decide when

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Corn Disease Update: July 12, 2020

Corn Disease Update: July 12, 2020

🕔19:59, 12.Jul 2020

The presence of foliar diseases in the MS corn production system has certainly increased over the past several weeks. In general, the presence of disease increases as the corn crop ages. Questions regarding common and southern rust, Curvularia leaf spot, Diplodia leaf streak, and Physoderma brown spot have been posed over the past several weeks. Information regarding the aforementioned diseases is contained in the current blog post.

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2019 Soybean OVT Foliar Disease Evaluations: Maturity Group V

2019 Soybean OVT Foliar Disease Evaluations: Maturity Group V

🕔15:36, 26.May 2020

The MSU OVT soybean locations were evaluated for disease during the 2019 season. Multiple diseases were evaluated at multiple locations and are provided in this post. Cercospora blight, frogeye leaf spot (when present), Septoria brown spot, southern blight, and target spot were the most commonly encountered diseases during the season.

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2019 Soybean OVT Foliar Disease Evaluations: Maturity Group IV

2019 Soybean OVT Foliar Disease Evaluations: Maturity Group IV

🕔15:07, 26.May 2020

The MSU OVT soybean locations were evaluated for disease during the 2019 season. Multiple diseases were evaluated at multiple locations and are provided in this post. Cercospora blight, frogeye leaf spot (when present), Septoria brown spot, southern blight, and target spot were the most commonly encountered diseases during the season.

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County Meeting Schedule – February 2020

County Meeting Schedule – February 2020

🕔21:55, 30.Jan 2020

Mississippi State University Extension will be hosting several more county row crop meetings during February of 2020. Each meeting will cover issues specific to the region including management topics on agronomics, insects, weeds, diseases, and economics. A meal will be

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Upcoming County Meetings – January 22-23, 2020

Upcoming County Meetings – January 22-23, 2020

🕔10:25, 17.Jan 2020

Mississippi State University Extension will be hosting several county row crop meetings in January and February of 2020. Each meeting will cover issues specific to the region including management topics on agronomics, insects, weeds, diseases, and economics. A meal will

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2019 Soybean Stem Canker Inoculated Variety Trial Evaluations

2019 Soybean Stem Canker Inoculated Variety Trial Evaluations

🕔11:21, 4.Jan 2020

The cultivars contained in the Mississippi State University Official Variety Trial (OVT), as well as a few additional cultivars, were field-evaluated for their susceptibility/resistance to stem canker. Trials were conducted in Stoneville with toothpick-inoculated plants during the 2019 season. Tables contain the average of the field observations (on a 0-9 scale) as well as an assessment of resistance to stem canker (R, MR, MS, S) based on the evaluations conducted.

Read Full Article
2019: Response of Cotton Varieties to Inoculation with Xanthomonas citri pv. malvacearum, the Causal Organism of Bacterial Blight

2019: Response of Cotton Varieties to Inoculation with Xanthomonas citri pv. malvacearum, the Causal Organism of Bacterial Blight

🕔13:29, 27.Dec 2019

Response of the cotton varieties contained within the 2019 Official Variety Trial to bacterial blight following evaluations conducted on inoculated plots are included in this blog post.

Read Full Article
2019 MSU Corn Hybrid Trial Disease Evaluations Irrigated Locations

2019 MSU Corn Hybrid Trial Disease Evaluations Irrigated Locations

🕔16:20, 4.Dec 2019

Locations containing the MSU official corn hybrid trials (OHT) were evaluated for foliar diseases during the 2019 season. Curvularia leaf spot and northern corn leaf blight (NCLB) were the two most commonly observed diseases. Presently, the evaluations from the irrigated locations (n=4) are included in the current post.

Read Full Article
UPDATE: Soybean Variety Demonstration Program Summary

UPDATE: Soybean Variety Demonstration Program Summary

🕔16:30, 19.Nov 2019

When previously posted, three locations from this year’s program had yet to be harvested. Since that time, two of these three locations have been harvested and the link below has been updated to reflect the addition of these data. As

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2019 MSU Corn Hybrid Trial Disease Evaluations NON-irrigated Locations

2019 MSU Corn Hybrid Trial Disease Evaluations NON-irrigated Locations

🕔14:26, 15.Nov 2019

Locations containing the MSU official corn hybrid trials (OHT) were evaluated for foliar diseases during the 2019 season. Curvularia leaf spot and northern corn leaf blight (NCLB) were the two most commonly observed diseases. Presently, the evaluations from the non-irrigated locations (n=4) are included in the current post. The irrigated locations (n=4) will be posted at a later date.

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2019 Soybean Variety Demonstration Program Summary

2019 Soybean Variety Demonstration Program Summary

🕔16:56, 13.Nov 2019

The annual MSU Extension Soybean Variety Demonstration Program is conducted using a set of varieties with proven performance. These varieties are grown in a production setting on various soils and management systems around the state. The sets for 2019 represented

Read Full Article
Soybean Disease Update: September 7, 2019

Soybean Disease Update: September 7, 2019

🕔11:51, 7.Sep 2019

Even though we are late in the season, some of the disease situations observed across MS continue to change.

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Cotton Leafroll Dwarf Virus: First Report in MS in 2019, Identification and Management Considerations

Cotton Leafroll Dwarf Virus: First Report in MS in 2019, Identification and Management Considerations

🕔10:51, 24.Jul 2019

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.

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Corn Disease Update: July 22, 2019

Corn Disease Update: July 22, 2019

🕔13:27, 22.Jul 2019

Since June, and most recently over the past few weeks, the corn disease questions have continued to include diseases from the lower canopy, in addition to Curvularia leaf spot. Southern rust was first detected in the MS corn crop on July 5. Since that time a limited number of counties have also observed the disease. However, at present, the amount of southern rust observed has been rather low.

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MS Ag Industry Council – 2019 Row Crop Update

MS Ag Industry Council – 2019 Row Crop Update

🕔11:23, 13.Jul 2019

We welcome you to attend the Row Crop Update at the 2019 Mississippi Agricultural Industry Council Annual Convention. This event is hosted at Perdido Beach Resort in Orange Beach, Alabama on Wednesday, July 24 starting at 8:00am.

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2019 Mississippi Rice Field Day – This Thursday August 8

2019 Mississippi Rice Field Day – This Thursday August 8

🕔16:05, 1.Jul 2019

The 2019 MSU-DREC Rice Producer Field Day will be held on August 8, at the Delta Research and Extension Center at 3:30 p.m.  The program will begin at the Capps center with a brief welcome prior to departing for the field

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The Principles of Plant Pathology: The Response of the Host

The Principles of Plant Pathology: The Response of the Host

🕔11:37, 18.Jun 2019

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.

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