Over the past several weeks several phone calls have inquired about the specifics on timing of fungicide application in soybean. Over the past decade, the majority of the fungicide trials conducted in MS have suggested that an R3/R4 fungicide applied in the absence of disease provides not only excellent yield-loss prevention but in some cases an economic return.
Bollworm pheromone trap counts inched higher for a second consecutive week, but are still lower than normal. With much corn past green silk stage, bollworms in the region will be laying their eggs in cotton, soybeans or late corn. Tobacco
As some of the rice in Mississippi is starting to approach head emergence within the next few weeks, I wanted to give a brief update on rice stink bug populations that we are seeing across the Delta.
The DREC will be holding two separate field days, one for corn and soybean on July 19 and one for rice on July 31.
The United States Department of Agriculture’s World Ag Outlook Board released their monthly supply and demand estimates report earlier this morning. The report was the second round of forecast for the current summer (new) crops, which is the 2012/13 marketing
The biennial North Mississippi Research and Extension Center Agronomic Row Crops Field Day will be held at the Lee County Agri-Center, Magnolia Conference Center, Highway 145 South of Verona, on Thursday, August 9, 2012, from 8:00 a.m. to 1:30 p.m.
Plant bug sprays are going out this week but overall numbers have not been as high as expected to date. This can change rapidly as plant bugs begin to move into fields from wild host plants. Click to Enlarge
Bollworm and budworm pheromone trap catches are up some from last week, but bollworm catches are still far below typical catches for this time of year. Some sampling of corn and sweet corn has confirmed the low pressure. Once corn
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.
Before getting to the state disease summary, a quick note on two diseases common at this time of year, Pepper Spot/Leaf Scorch and funky leaf spot (FLS). Funky Leaf Spot is important because the early symptoms can be confused with
Over the past several weeks we’ve encountered tremendous hail damage in corn fields. Leaf shredding is one of the more common symptoms associated with hail injury and the greatest source of yield loss as a result of hail injury (see:
Transform, a new insecticide containing the active ingredient sulfoxaflor, has received an emergency use exemption for Delta counties in Mississippi for the control of tarnished plant bug in cotton. This product represents a new mode of action and has excellent
Over the past few weeks numerous maladies have been observed in corn that don’t require a management decision. One of our more common issues, purple leaf sheath, is simply present under the right environmental conditions and when nutrients become available for the organisms that produce the minor staining on the corn plant.
Plant bug numbers are picking up this week in the Delta areas in the ditch banks. Click to enlarge
For the second week in a row, bollworm counts were very low in all regions. In the chart below you can see that Delta counts this week averaged less than 10 moths/trap for the week, while they averaged about 300 per
Several soybean fields around the state have unfortunately been impacted from hail associated with recent storms. The big question in these cases is whether or not to replant. This is always a difficult question to answer. Several things need to
Hail damage has occurred in scattered areas over the past week to ten days. Areas around Clarksdale, Sledge, and Yazoo City as well as others have been affected by hail. Deciding whether or not to replant following hail damage can
Seedling disease has been making an appearance in isolated pockets over the past week to ten days. Primarily we have been observing Rhizoctonia, also known as soreshin, on cotton in the north Delta. Seedling disease, caused by Rhizoctonia solani, is
When glyphosate was effective on most weeds, we were in a period of “weed controlâ€. However, over the last few years since glyphosate-resistant weeds have become so prevalent, we have entered a period of “weed managementâ€.
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.
Plant bugs are still the predominant pest we are finding on wild hosts at this time. Click on to Enlarge
Pheromone trap counts for bollworm and tobacco budworm for the week are much lower than last week or than last year at this time, particularly in the Delta. Therefore, corn that is now silking may not have as much corn earworm
Sprayer cleanout after a herbicide application is a critical component to a successful herbicide application.
Over the past week a few soybean fields in the Delta have been observed with the characteristic symptoms and signs of southern blight. Typically, southern blight is a disease of rare occurrence; however, the prevailing environmental conditions seem to be causing added stress and increasing the incidence of this particular disease.
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