Oro Agri launched new anti-drift adjuvant to reduce spray losses
Feb. 12, 2020
Winds above 15 kilometers per hour are a frequent reality and can carry sprayed droplets over a distance of 30 or 40 meters and even kilometers depending on the method used.
The economic impact on production is considerable, especially when combined with evaporation losses caused by hot and low air on humid days, leading to less products reaching their targets.
In other words, this process leads to a waste in agrochemicals, such as herbicides and fungicides, and risks spreading them to unwanted areas and reducing the effectiveness of pest or disease management systems.
“If the drop is too thin, the wind carries or evaporates more quickly, which reduces spray efficiency. However, these losses can be drastically reduced with the use of a good anti-rust surfactant,” said Jeferson E. Philippsen (Product Manager at Oro Agri).
Philippsen cites the example of an anti-drift recently launched by the company in Brazil called “AIRTRUCK,” which he describes as another product with high-performance application technology.
Made from plant extracts, the product increases the median volumetric diameter of a drop, making it heavier.
With the use of the right product and the correct regulation of the sprayer, a farmer can improve spraying efficiency by about 20%, Philippsen added.
By increasing the viscosity of the syrup, the new surfactant decreases the number of droplets prone to drift or evaporation, usually those with a diameter equal to or less than a hair.
Another agent of efficiency loss is foam. AIRTRUCK avoids the production of foam inside the spray tank. Few producers are aware of the problem, but the greater the volume of foam the less product will reach the crop.
“And the more foam that forms, more product residue can stick to the tank walls, making it more difficult to clean and leading to the contamination of crops during the next spraying,” warned Lucas Rafael Maesta Dias (Specialist in Application Technology at Oro Agri).
However, AIRTRUCK does not eliminate the need to use a spray modifying agent.
An alternative is to use other surfactants that increase assimilation capacity, such as WETCIT, another Oro Agri product, which allows different agrochemicals to be completely homogenized and absorbed in up to 15 minutes by the leaf.
The required dosage for applying AIRTRUCK varies from 50 to 150 milliliters per hectare in terrestrial applications and 50 milliliters per hectare when aerial.
In addition to the tips, each nozzle requires a different pressure setting. The pressure gauge must be in perfect condition to check the correct pressure for each set of nozzle. This requirement is also neglected by producers.
The original Portuguese version is from Planeta Folha.
More from AgroNews
Subscribe to daily email alerts of AgroNews.