By ASTM definition a DRA is any additive agent or adjuvant that reduces spray particles smaller than 105 micron. ASTM E 1529-05

There are many good reasons to use a DRA such as: To put more product on target and eliminate off site movement from intended target.

The industry group for adjuvants, the Council of Producers and Distributors of Agrotechnology, recommends a DRA be included in every spray application to save money and reduce complaints. Watch this webinar to learn more about this recommendation.

No, not all DRA’s are the same. DRA’s fall into two basic categories. Oil Emulsions and Polymers. Oil emulsions include oil/water, water/oil, paraffin, MSO’s, Seed Oils, and Oil blends. Polymers include, polyacrylamides, Guar gums, Xantham gums, Starches and Cellulose.

Product performance and efficacy are paramount in measuring the value of a good DRA. Besides the obvious of making droplets larger than 105 microns, what is even more important is the chemical nature of those droplets. A good DRA will enhance deposition as well as reducing off site movement. An even better DRA may enhance uptake as well.
(Optimum droplet range is between 200 and 400 microns. Smaller droplets drift and evaporate, larger droplets, bounce, shatter and run off.)

The proof is in the return on investment or ROI. If 10-15% of your spray dollar is not getting where you intended, what is the cost of that loss. For good insurance of your spray dollar investment, a DRA should be used on every acre.

All of the DRA’s available from AgraSyst carry the same promise, “Engineered to work, designed to be simple”.