In embodiments, a seeder may include a frame including a seed box and a rearroller. In embodiments, the seeder may be configured to removably couple witheither aroller assembly or a disc blade assembly. In some embodiments, the seeder mayinclude a front tray configured to receive two kinds of seed from twodifferent seedboxes and disperse the seed at a position in front of the rear roller so thatthe seeds areplanted at the same depth. In some embodiments, the seeder may further includeacalibration tray which may have a width less than a width of the seeder. Thecalibrationtray may be configured to receive seed from the seed box during a calibrationprocedure.
