Source: Weed Science Society of America
New precision tools and application techniques are being developed to keep herbicides right where they belong. One of the latest breakthroughs involves low-drift nozzles that can significantly reduce the proportion of very fine (small) spray droplets that are susceptible to drift.
"These low-drift nozzles are really having a revolutionary impact," said Tom Wolf, Ph.D., a research scientist with Agriculture and Agri-Food Canada and a member of the Weed Science Society of America (WSSA). "Research shows we can reduce the spray that drifts away from its target to less than 0.5 percent of the applied amount. That's a decrease of more than 80 percent compared to conventional sprays."
The secret is a clever design that reduces the internal operating pressure of the sprayer nozzle and mixes air into the herbicide spray as it is applied.