Precision Metering of Fluid Drilled Seeds

ABSTRACT A microcomputer controlled metering system was de-veloped to accurately space germinated seeds. The microcomputer detected seed presence with photoelectric devices and drove the metering mechanism with stepping motors. The system was tested on a planter evaluation stand for metering speed and spacing accuracy. The mi-crocomputer was able to control the metering of ger-minated seeds suspended in a water based gel without damage to the seeds. Significant promise was shown for accurate metering of germinated seeds.