Events Calendar

April  2014
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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

Mississippi Sweetpotato Field Day Scheduled for Tomorrow- August 22nd

PONTOTOC – Sweetpotato growers, crop consultants and other agricultural professionals can learn about recent weed, insect and disease control research during an upcoming field day.

Researchers and specialists with Mississippi State University’s Extension Service and the Mississippi Agricultural and Forestry Experiment station will host the event Aug. 2

2 at the Pontotoc Ridge-Flatwoods Branch Experiment Station located at . . . → Read More: Mississippi Sweetpotato Field Day Scheduled for Tomorrow- August 22nd