Events Calendar

November  2014
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Sweetpotato Field Day Program- August 20th

Mississippi State University will host its Second Annual Sweetpotato Field Day on Wednesday August 20th at the Pontotoc Ridge-Flatwoods Branch Experiment Station (8320 Hwy 15 S., Pontotoc, MS 38863).  The program for the field day is below.  Please contact Stephen Meyers with any questions at smeyers@ext.msstate.edu or 662.489.4621.

Sweetpotato Field . . . → Read More: Sweetpotato Field Day Program- August 20th

North Mississippi Research and Extension Center’s Agronomic Row Crops Field Day on Thursday, August 7

The North Mississippi Research and Extension Center’s Agronomic Row Crops Field Day on Thursday, August 7 will present the latest research to the area’s row-crop farmers and consultants. The field day will be from 8 a.m. to 1:30 p.m. at the Lee County Agri-Center Magnolia Conference Center on Highway 145 South in Verona.
. . . → Read More: North Mississippi Research and Extension Center’s Agronomic Row Crops Field Day on Thursday, August 7

Glyphosate Injury to Sweetpotatoes Adjacent to Field Roads

Maintaining clean and weed-free field roads around sweetpotatoes is thought to help minimize rodent injury and make access for crop scouting and monitoring more efficient. Roads are most often maintained weed-free with glyphosate applications. However, off-target movement of glyphosate onto adjacent sweetpotato plants can be problematic.

Sweetpotato vines exposed to glyphosate often exhibit chlorotic/yellow leaves and stems . . . → Read More: Glyphosate Injury to Sweetpotatoes Adjacent to Field Roads

Carpetweed- Unsightly but Not a Big Threat to Sweetpotato Fields

It’s that time in the sweetpotato production season- where the last slips are making their way into the ground and herbicide treatments applied to the earlier planted crop get tested prior to canopy closure. While pigweeds and nutsedges represent the greatest threat to yield and quality, carpetweed (Mollugo verticillata L.) appears to be the on the . . . → Read More: Carpetweed- Unsightly but Not a Big Threat to Sweetpotato Fields

Southern Blight and Sweetpotato Plant Beds

Warm April weather in North Mississippi provides great growing conditions for sweetpotato plant beds. A few days near the 80s will have sweetpotato shoots pushing up the black plastic mulch that has been covering them since March. However, warm and humid conditions underneath plastic mulch can also provide an ideal environment for Southern blight, a disease . . . → Read More: Southern Blight and Sweetpotato Plant Beds

Sweetpotatoes and Scurf

Each year some sweetpotato scurf or “soil-stain” is reported.  However, this year it would appear that the disease has been more prevalent than normal in some fields.  Scurf is caused by a soil-dwelling fungus, Monilochaetes infuscans, and results in darkened, discolored skin (Figure 1).  The affected portion of the root can range from a small patch . . . → Read More: Sweetpotatoes and Scurf

“Why are there red potatoes in my field?”

Last week’s harvest saw reports of “red potatoes” appearing in sweetpotato fields.  There was speculation that the light-orange-skinned ‘Beauregard’ had altered its genetic make-up to the point that it had changed its skin color at multiple locations within the same field.  While genetic mutations do occur in sweetpotato, there is a far more likely explanation.  As . . . → Read More: “Why are there red potatoes in my field?”

Sugarcane Beetle Reported in Sweetpotato.

This week marked the first reported appearances of sugarcane beetles in sweetpotato fields in Mississippi for the 2013 growing season.  The sugarcane beetle is a relatively new pest of sweetpotato in Mississippi.  However, in recent years, heavy sugarcane beetle populations have caused significant losses for some growers in Louisiana, as roots with sugarcane beetle damage are . . . → Read More: Sugarcane Beetle Reported in Sweetpotato.

A Critical Look at Sweetpotato Yield

Yields for most Mississippi sweetpotato growers are anticipated to be on par with expectations.  However, growers not content with their yields should take a critical look at the vines that ride up the front of the digger- each one tells a story.  Here are three non-pest related contributors to insufficient yield:

Planting depth

The first thing I look . . . → Read More: A Critical Look at Sweetpotato Yield

Imazapic/Cadre Carryover Symptoms in Sweetpotato

Cadre (active ingredient= imazapic) is an ALS-inhibiting herbicide registered for use in peanut.  The persistence of the herbicide, which has an average half-life of 120 days, requires growers pay particular attention to the herbicide’s rotational restrictions.  Fortunately, Cadre carryover injury to sweetpotato has been rare in 2013.  I recently found one field in Chickasaw County with . . . → Read More: Imazapic/Cadre Carryover Symptoms in Sweetpotato