A website from UGA Cooperative Extension

Here is a post from Eric Prostko – UGA Weed Scientist about Valor injury in peanuts.  We’ve got some Valor injury in some peanut fields I’ve visited over the past couple weeks.

“VALOR INJURY OR THE SKY IS FALLING (PROSTKO)
My right ear is currently bleeding due to the numerous telephone calls that I have received over the last few days about Valor injury in peanuts.  Peanuts that were planted approximately 10 days ago or so were in a great place to get hammered from Valor because of the recent rainfall events (Figure 1).   Everyone seems to be panicking as though this was a surprise??????  If it rains on Valor treated peanuts when they are cracking and small (~2 weeks after cracking), injury will occur.  Peanuts typically recover from this injury without a yield penalty.  Check out Figures 2 and 3 from some of my research back in 2009.  In this trial, more than 5″ of rainfall occurred in the 30 day period after peanut planting.  Peanut injury was significant but yields were not reduced even at a 2X rate.  Not sure what else I can say or do at this point???”
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