The invention relates to a cultivation method for improving plant growing processes in an agricultural environment using an unmanned system comprising one or more unmanned units, wherein the one or more units are configured with a first delivering device for delivering a behavioural control agent for controlling behaviour of organisms and a second delivering device for delivering a pest control agent for reducing harmfulness of pest organisms, the method comprises the steps of determining a first area and a second area dependent on a location of pest susceptible plants, delivering the behavioural control agent over the first area, and delivering the pest control agent over the second area.
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