Delayed Emergence Due to Orthene

— Written By NC State Extension

The following images are from a field treated with Orthene, Proline, and Optimize Lift in the seed furrow at planting. The farmer did not turn on the in-furrow application for one 8-row pass. I looked at these on May 25 (images 1 and 2), June 2 (images 3 and 4) and June 9 (images 5 and 6). This shows the delayed emergence seen by a number of people when Orthene is applied in the seed furrow. Also, the peanuts that emerged later had less thrips damage (they had Orthene in the furrow) than those emerging earlier (without Orthene) (images 7 and 8).

I think the general consensus is that when there is an issue with Orthene in the seed furrow it is generally a delay in emergence and not a stand failure. Over time the peanuts fill in. This particular field had excellent conditions for germination and emergence. Ames and Rick might have more to add or take away from this statement.

peanut field

Image 1.

peanut field

Image 2.

peanut field

Image 3.

peanut field

Image 4.

peanut field

Image 5.

peanut field

Image 6.

peanut foliage

Image 7.

peanut foliage

Image 8.

Article first appeared as North Carolina Peanut Note (PNNC-2014-072)