Notes From Dan Anco Clemson Peanut Notes No. 62 2024

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Information from Dan Anco

About 30% of the state’s peanuts have been planted. A few spots have been dry but most fields have a fair amount of moisture. Temperatures in the week ahead look to continue the recent pattern of being warm yet tempered, with a chance of some rain Thursday/Friday. This should help to reduce seedling issues from Aspergillus crown rot which tends to be worse with prolonged hot and dry conditions. Attached are a few pictures from the canopy, including thrips injury on treated versus untreated seed, seedlings dead or hurting from Rhizoctonia or stem rot/white mold, and injury from Thimet and Valor.

Ag Lime/Gypsum/Calcium question:

Hope all is well. I wanted to see if you knew anything about farmers using hi cal lime as a calcium source for peanuts?
Our thought is, as gyp gets harder to find, would it be possible to make a hi cal lime application for peanut pegging and it also double as a lime application. I wasn’t sure if any farmers were trying this or not, or if it was common practice in some areas. Any commentary on what you have seen or have heard of is greatly appreciated.


Most folks for calcium needs will apply gypsum. Lime application does add some calcium for use, but it tends to take longer to become available and would need to go out at planting or earlier and likewise coincide with a need for pH adjustment. If lime is applied around pegging, my thoughts are it would be too late. Gypsum tends to be more available for dryland production. I am not aware of folks foregoing gypsum completely in lieu of using lime, though some folks if planting smaller seeded runners may bypass a gypsum application if their soil test Ca levels are high enough in advance.
Dr. Farmaha may have additional information to share.

Farmaha follow up:

Dan, your response on lime use for calcium needs is appropriate and complete.

Bermuda question:

Picked up some land that was in coastal Bermuda grass. I bottom plow and disced a couple times. Putting 2 oz valor spiked with 16 oz dual out the back of the planter. Anything else I can do to keep the grass from taking back over?


Turning the Bermuda over with the plow will definitely help keeping it from coming back. You will have some Bermuda come back, use Select (clethodim) at 8 fl oz/A when runners are about 6 inches and then come back in 14 days with additional 8 fl oz/A (up to 16 fl oz/A if pressure is heavy). For any additional regrowth later in the season, you can repeat the same treatments if you see runners at least 6 inches. I do think the plowing will get a lot of it by burying it too deep to emerge. Make sure you tank mix a Crop Oil (1% v/v) and AMS (3 lbs/A) with each application.

Dan Anco

Extension Peanut Specialist and Associate Professor

Department of Plant and Environmental Sciences

Clemson University – Edisto Research and Education Center

64 Research Road

Blackville, SC 29817

630-207-4926 cell