Finger Pick-Up Metering Unit Operating Characteristics

IMPORTANT: Graph at right shows performance characteristics of finger pick-up metering unit relative to operating speed. An increase in operating speed above maximum speed will cause overpopulation. The population is shown as a band on the graph, since slight variations in population may result from differences in seed size and shape.

The most accurate population will be obtained when machine is operated between one-half maximum speed and maximum speed. Planting too fast may result in doubles and triples. Planting too slow may result in skips.

Maximum speeds, shown in planting rate charts, are for optimum conditions. Slower speeds should always be used when planting in rough seedbeds to insure satisfactory machine performance. Poor depth control and erratic seed spacing may result from planting too fast for conditions.

See HOW TO USE PLANTING RATE CHARTS in Plateless Meter Rate Charts section for instructions on setting sprockets for desired planting rate.

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IMPORTANT: The chart at the right illustrates how seed size effects population using either corn or sunflower finger pick-up meters.

This meter provides consistent seed spacing and population control when planting corn. It also has good performance in metering confectionary (large) sunflower seeds.

The meter handles all normal sizes of U.S. seed corn (except popcorn) and larger sizes of No. 2 sunflower seed. For smaller sizes of No. 2 and all No. 3 and No. 4 sunflower seeds, order sunflower finger assembly from your John Deere dealer.

The finger pick-up planting accuracy will be influenced by seedbed conditions, seed size and operating characteristics of seed meter. Rough seedbed and fast planting speeds typically deteriorate seed placement accuracy.

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