#$%^&*AU2014200685A120140227.pdf#####ABSTRACT An apparatus for applying substances to a crop or field having sensors generating detection signals associated with a respective sub-area having a chlorophyll intensity above a threshold level wherein one or more spray outlets are responsive to control signals from a control circuit to maintain an outlet open except when a detection signal is present. The control system may be configured to allow operator selection between distributing or not distributing a substance when the control system determines: e the sample area proximate at least one sensor or group of sensors is having one or more conditions which meet at least one predetermined condition parameter for that or those condition(s) or e the sample area proximate at least one sensor or group of sensors is having one or more conditions which do not meet at least one predetermined condition parameter for that or those condition(s). 18WiO 201 11102739 PCTINZ2OI 1/0100004 -4 1/2
