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US 5,499,198 AGranted
Method for predicting spray drift
AssigneeThe Dow Chemical Company
InventorsRobert E. Gaidos, Mukund R. Patel
Life of this patent
Estimating the term…
Abstract
A method for predicting, and thus reducing, liquid or solid pesticide drift when sprayed onto targets. This method is especially applicable to fixed-wing (low release height) and rotary-wing (high release height) applications.
Claims7
A method for delivering a maximum on-target and a minimum off-target spray deposition from aerial applications comprising the steps of:
- a) providing an initial discrete spray droplet size distribution data for the applied spray formulation containing an active ingredient;
- b) providing application condition data;
- c) providing prevailing meteorological condition data;
- d) providing volume fraction data of the non-volatile components of the formulation;
- e) providing formulation carrier property data;
- f) providing fluid property data of the fluid through which the formulation carrier traverses;
- g) providing heights and widths of effective initial spray droplet volume sources which correspond to the discrete initial spray droplet sizes in the spray droplet distribution;
- h) applying the data of steps (b)-(f)--to each of the volume sources defined in step (g) to determine spray deposition resulting from each volume source comprised of droplet size distribution of step (a);
- i) combining the resulting deposition from each volume source to determine the total amount of active ingredient deposited on-target as well as off-target;
- and
- k) delivering the aerial application, using the results of step (i), so as to provide a maximum on-target spray deposition and a minimum off-target spray deposition.
8 more elements
Dependencies are inferred from the claim text.