A system for sowing seeds in cells of a germination tray, the system comprising: a conveyor configured to move the germination tray in a conveying direction; a seed storage container configured to hold a plurality of seeds; a seed sowing machine configured to receive the seeds from the seed storage container and drop the seeds along a second portion of at least one seed transport path and into respective cells of the germination tray as the conveyor moves the germination tray in the conveying direction beneath the seed sowing machine; a detector configured to output seed signals indicative of the presence or absence of a seed or a target number of seeds in each cell of the germination tray; characterized in that the system further comprising: a seed diverting mechanism configured to selectively divert seeds from the at least one seed transport path such that the diverted seeds are not deposited in cells of the germination tray during operation; and a control unit configured to process the seed signals to identify the cells of the germination tray including a seed or a target number of seeds, and control the seed diverting mechanism to selectively divert seeds from the at least one seed transport path to prevent re-seeding of the cells of the germination tray identified to include a seed or a target number of seeds; characterised in that the seed diverting mechanism is positioned vertically between the conveyor and the seed sowing machine and configured to selectively divert seeds falling under gravity. a conveyor configured to move the germination tray in a conveying direction; a seed storage container configured to hold a plurality of seeds; a seed sowing machine configured to receive the seeds from the seed storage container and drop the seeds along a second portion of at least one seed transport path and into respective cells of the germination tray as the conveyor moves the germination tray in the conveying direction beneath the seed sowing machine; a detector configured to output seed signals indicative of the presence or absence of a seed or a target number of seeds in each cell of the germination tray; characterized in that the system further comprising: a seed diverting mechanism configured to selectively divert seeds from the at least one seed transport path such that the diverted seeds are not deposited in cells of the germination tray during operation; and a control unit configured to process the seed signals to identify the cells of the germination tray including a seed or a target number of seeds, and control the seed diverting mechanism to selectively divert seeds from the at least one seed transport path to prevent re-seeding of the cells of the germination tray identified to include a seed or a target number of seeds; a seed diverting mechanism configured to selectively divert seeds from the at least one seed transport path such that the diverted seeds are not deposited in cells of the germination tray during operation; and a control unit configured to process the seed signals to identify the cells of the germination tray including a seed or a target number of seeds, and control the seed diverting mechanism to selectively divert seeds from the at least one seed transport path to prevent re-seeding of the cells of the germination tray identified to include a seed or a target number of seeds; process the seed signals to identify the cells of the germination tray including a seed or a target number of seeds, and control the seed diverting mechanism to selectively divert seeds from the at least one seed transport path to prevent re-seeding of the cells of the germination tray identified to include a seed or a target number of seeds; characterised in that the seed diverting mechanism is positioned vertically between the conveyor and the seed sowing machine and configured to selectively divert seeds falling under gravity.