Agrochemical Performance After Sitting in the Tank for Multiple Days Peanut Notes No. 79 2024
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Collapse ▲I had a question from another state about how long Cadre can sit in the spray tank and still control weeds. The tank was mixed a week ago. We did a lot of work on this about 10 years ago and found that the effectiveness of many pesticides and other products used in peanuts (we also looked at products used in cotton and tobacco) performed adequately even though they sat in the tank for up to 9 days. The results were surprising to me. One important thing to note is that we used municipal water at pH around 6.7. Quality of water and pH vary across the state and could result in a different response than what we found. Peter Eure did a lot of great work on this project. Also, settling of products can be a major issue. For us, we were conducting small-plot research using plastic spray bottles. We shook the bottles often and made sure everything went back into solution prior to spraying. This may be more challenging at the farm level.
We did not look at Cadre but did look at Pursuit (original question.)
Here are links to papers Peter published if you want more details:
Eure, P. & Jordan, D. & Fisher, L. & York, A., (2013) “Evaluation of Peanut Agrochemical Efficacy in Situations Where Spray Solution Application is Delayed”, Peanut Science 40(1), p.52-61. doi: https://doi.org/10.3146/PS12-5.1
Eure, P. & Jordan, D. & Fisher, L. & York, A., (2013) “Efficacy of Herbicides When Spray Solution Application is Delayed”, International Journal of Agronomy Volume 2013, Article ID 782486. doi: https://doi.org/10.1155/2013/782486