Comments From Dan Anco Clemson Peanut Notes No. 56 2023

The forecast for the week ahead has warmer temperatures continuing to move in, with what could be our start of daily highs reaching 90.
A friendly reminder, there is soil activity with dicamba. For peanuts, this is 15 days per 8 fl oz/A of dicamba sprayed (for a 4 lb ai per gallon formulation). Receiving increased rainfall helps to reduce its remaining soil activity. Dr. Marshall as a general rule recommends to wait 30-days before planting peanut in a field where dicamba was applied as part of a burndown.

As fields are planted and individual varieties are prioritized, it is helpful to consider disease susceptibility and maturity length. Planting earlier (early May) helps to reduce leaf spot risk (Virginia type varieties, for example), but can increase risk of tomato spotted wilt (and white mold), more so when reaching into April. FloRun 331 has more TSW susceptibility than something like Georgia 16HO or TUFRunner 297 (or FloRun T61), so between those I would lean towards planting TR297/16HO before 331. Disease profile for 16HO is similar to 06G, with the main difference there being the length of the growing season each tends to require, with 16HO being a little longer (>5 to 10 days).

In cases where seed lot quality appears poor or questionable, for example if stands are poor after several weeks of decent conditions following planting, a sample of at least 2 lb of seed from a batch can be sent to the SCDA seed lab to test germination rates. Fields and situations can vary. Cool, slow draining ground and soil diseases can play their part to hurt seed and stands, and if germination is low it is like limping out the gate.




 

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

danco@clemson.edu

https://www.clemson.edu/extension/agronomy/peanuts/