Rainfall events of May 20/21 will likely result in Valor injury on peanut. Although I have addressed this issue in many previous blogs (June 3, 2013; May 20, 2014, May 26, 2017, May 6, 2019), here is another general summary of the Valor injury/yield data that I have collected over the past 21 years:
- 11 replicated field trials with reliable yield data
- 11/11 trials, Valor 51WG @ 3 oz/A had no negative effect on peanut yield
- 9/11 trials, no difference in yield between 3 oz/A and 6 oz/A (FYI, 6 oz/A is not labeled or recommended)
- 2/11 trials, 6 oz/A caused yield losses when compared to 3 oz/A (6.9% to 8.8% yield loss).
Bottom line is that peanut fields suffering from injury, when Valor was applied at the labeled rate (3 oz/A) and timing (no later than 2 DAP), will very likely recover with no effects on final yield!