I am looking for an adjuvent (sufactant) to add to a solution destined for foliar application to increase efficiency of absorption into the leaves of Vitis Vinifera. Any recommendations?
I have been using 0.1% Triton X-100 (Sigma Aldrich) to apply jasmonic acid to cabbage leaves. It works: a student that forgot to add it, saw the droplets rolling off the leaves. Do not forget to add 0.1% to the control solution!
Commercial or research??? Commercially you can try with agricultural silicons from General Electric, NP-7 from Bayer is also a classic. For research Triton X-100 works just fine but may be expensive for commercial use..
One good summary reference is recommended above. You can also try the Penn State University link for a good review of adjuvants and their functions. If you are using a commercial foliar fertilizer, check the label to determine if a specific adjuvant is recommended, or if an adjuvant is already included in the product. If you are formulating your own foliars, or using fertilizers without a formulated adjuvant, you may want to try a number of mixtures as different formulations can give different results. In California a commonly used and effective commercial product is Loveland "WidespreadMax", a non-ionic silicone surfactant. Loveland also has a formulated product that is a spreader/acidifier/penetrant all in one: LI 700. (I am not necessarily recommending Loveland. All ag chemical companies have their recommended products.) Triton X-100 from Sigma-Aldrich may be appropriate for your research. Also, your choice may be an "organic" soap vs. a commercial product.
http://extension.psu.edu/pests/pesticide-education/applicators/fact-sheets/pesticide-safety/spray-adjuvants
We have a lot of surfactant for that.
i have recommended which have low phytotoxicity
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