Abstract: The present disclosure relates to methods and systems of spray calibration and measurement. The method including selecting a nozzle-agrochemical combination to perform at least one of reducing at least one of resistance development in a pest species, reducing phytotoxicity in a crop plant, maximizing effective dose, and reducing off target effects. The method may further include obtaining a target area having a target zone and an off-target zone and spraying for a time (T), a volume (V), of a liquid composition through a test nozzle, at a height (H) from the test nozzle to the target surface, and at the target zone of the target surface.

Abstract: The present invention relates to novel polymer coated chlorothalonil particles, processes for their preparation, agricultural compositions containing them and to methods of using them for controlling or preventing infestation of useful plants by phytopathogenic microorganisms.