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Posts From Trent Irby, Extension Soybean Specialist

Frogeye Leaf Spot Management Suggestions for the 2014 Season

Frogeye Leaf Spot Management Suggestions for the 2014 Season Updated

🕔22:00, 24.Jun 2014

Frogeye leaf spot management continues to be a hot topic during the 2014 season. Scattered reports of frogeye in R3+ soybean fields continue to be made. Most of the questions at this time tend to be regarding fungicide management suggestions at the R3/R4 application timing. Knowing what varieties are planted in fields is one of the most important determining factors since susceptible varieties should be managed differently at R3/R4 than frogeye tolerant varieties.

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Soybean Irrigation Initiation Updated

🕔10:00, 23.Jun 2014

Although we have received lots of rainfall this season, it is time to initiate irrigation in soybean. Keep in mind that irrigation during the early vegetative phase provides little to no yield benefit. The reason to apply irrigation during the

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How to Use Watermark Sensors to Assess Soil Moisture and Schedule Irrigation

How to Use Watermark Sensors to Assess Soil Moisture and Schedule Irrigation Updated

🕔00:37, 21.Jun 2014

Row crop irrigation needs are ramping up and one of the tools we can use to better assess soil moisture is Watermark sensors. This article describes how to analyze the data generated by sensors to help you better schedule irrigation.

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Soybean herbicide options for delayed postemergence applications targeting Palmer amaranth Updated

🕔16:44, 20.Jun 2014

With most of Mississippi receiving large amounts of rain during early June, opportunities for herbicide applications in soybean have been rare up to this week. Several calls have come in regarding herbicide options in situations where the weather has prevented

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Soybean Crop Update and Replant Decisions Updated

🕔10:58, 13.Jun 2014

According to the USDA National Agricultural Statistics Service in Mississippi, 89% of the soybean acreage is planted as of the week ending June 8, 2014. At this time, 82% of the crop is emerged. The remaining acres to be planted

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Delta Area “Turn Row Talks” on Water Conservation Announced Updated

🕔07:58, 13.Jun 2014

On June 9, leaders from the Mississippi Soybean Promotion Board, key personnel from the Mississippi State University Extension Service, and stakeholder organizations a part of the Delta Sustainable Water Resources Task Force formally announced a series of summer irrigation “Turn Row Talks” to be held across the Delta during the month of July for producers to attend local, on-farm demonstrations of water conservation efforts being implemented and utilized by growers in their respective areas.

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The Mississippi State University RISER Program: Efficient Methods for Furrow Irrigation Updated

🕔11:42, 12.Feb 2014

RISER irrigation approach reduces water use by 50% while maintaining yield potential.

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Delta Ag Expo, Cleveland, MS – January 23 & 24, 2014

Delta Ag Expo, Cleveland, MS – January 23 & 24, 2014 Updated

🕔11:08, 11.Jan 2014

Attached please find the agenda for the Delta Ag Expo in Cleveland, MS. Make careful note that the dates of the meeting have changed from previous years due to a minor scheduling conflict with the Bolivar County Exposition Center.

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Soybean Variety Suggestions for 2014 Updated

🕔14:55, 16.Dec 2013

Variety selection is one of the most critical management decisions associated with soybean production. Factors such as soil type, planting date, irrigation capabilities, row spacing, harvest capacity, and other crops grown all can influence the decision for selecting an appropriate

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Harvest Aid Options in Soybean Updated

🕔08:53, 20.Sep 2013

While weeds can create problems for harvest equipment, many producers see the benefit of a harvest aid in creating a more rapid and efficient harvest in the absence of weeds

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Managing Late Season Stink Bugs in Mississippi Soybean

Managing Late Season Stink Bugs in Mississippi Soybean Updated

🕔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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Soybean Irrigation Termination Updated

🕔09:10, 4.Sep 2013

Determining when to terminate irrigation in soybean can be difficult. When making this decision, the goal is to make sure that adequate soil moisture is available to ensure that the soybean seeds reach maximum size. Terminating irrigation too soon can

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Yield Loss from Defoliators in Soybean and Insecticide Termination

Yield Loss from Defoliators in Soybean and Insecticide Termination Updated

🕔15:48, 30.Aug 2013

Now that early planted beans are drying down quickly and insect pressure is increasing on late planted soybeans in some areas, many are asking when it is safe to quit spraying insect pest in soybeans. For most pest in soybean

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

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

🕔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 Irrigation Termination Turn-Row Field Day Updated

🕔18:41, 23.Aug 2013

Terminating soybean irrigation too early can result in lower yield due to decreased seed size. At the same time, irrigating when the crop no longer needs water can be a waste of time and resources. On Friday, August 30, 2013

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

🕔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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Soybean Minute Radio Program Updated

🕔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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Double Crop Soybean: Seeding Rates and Seed Treatments Updated

🕔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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Soybean Fungicide Management Considerations for 2013 Updated

🕔14:26, 1.Jun 2013

Over the past week we’ve received two reports of frogeye leaf spot in reproductive soybeans. In both cases, a susceptible variety was planted and frogeye leaf spot symptoms can be clearly distinguished throughout the canopy. Following the observation and reports of strobilurin-resistant frogeye leaf spot in two fields in MS last year, and from adjacent states, it is most important to determine what particular soybean variety is planted in a field prior to making a decision on a specific fungicide product for yield loss prevention.

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2013 Soybean Planting Progress Updated

🕔22:48, 28.May 2013

According to the USDA National Agricultural Statistics Service in Mississippi, 46% of the soybean acreage was planted as of the week ending May 26, 2013. At this time, 32% of the crop is emerged. Several areas around the state received

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Soybean Seedling Issues: Seedling Disease Versus Herbicide Injury Updated

🕔19:57, 14.May 2013

Within the past week to 10 days, numerous fields have been diagnosed as having “Pythium seedling disease”. In most cases, herbicide injury has resulted in fields appearing to have an uneven stand as a result of seedling disease. Rarely would a seedling disease be responsible for large acreages of dead seedlings. More than likely, a combination of events have occurred to cause the appearance of seedling disease. Preemergence herbicides, cool temperatures, excessive rainfall following planting immediately prior to emergence, light soil texture, and herbicide injury on stressed soybean seedlings have all compounded the stressful situation.

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Soybean Disease Monitoring: Soybean Sentinel Plot Update and 2013 Soybean Rust Fungicide List Updated

🕔13:35, 29.Mar 2013

As we move towards the soybean season we’ve included some information regarding the labeled fungicides for application to prevent yield loss as a result of soybean rust. Soybean rust was able to overwinter in several Gulf Coast states (AL, FL, LA). However, at present, soybean rust has not been detected on kudzu in MS.

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2013 Soybean Variety Suggestions Updated

🕔10:11, 5.Dec 2012

Variety selection is one of the most critical management decisions associated with soybean production. Factors such as soil type, planting date, irrigation capabilities, row spacing, harvest capacity, and other crops grown all can influence the decision for selecting an appropriate

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Delta Crop Summit – November 13, 2012, Stoneville, MS Updated

🕔13:16, 26.Oct 2012

The 2012 Delta Crop Summit will be held on Tuesday, November 13, in Stoneville, MS. Please see the attached schedule.

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Impact of Hurricane Isaac on Soybean Rust and Potential Management Decisions

Impact of Hurricane Isaac on Soybean Rust and Potential Management Decisions Updated

🕔11:48, 31.Aug 2012

Over the past six weeks soybean rust has been detected in numerous soybean fields throughout Mississippi.  Even though it appears that a large number of counties have soybean plants infected with the disease, at present only low levels of soybean

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