Great Plains 1300 13-Foot Material Rate - Manual (Page 4)

175-157B Table of Contents Metric Charts 2014-03-10
2 1300 and 1300F Table of Contents Metric Charts Great Plains Manufacturing, Inc.
Main Box Seed Rate
Accurately obtaining the desired seed population
requires four steps:
1. Setting Drive Type sprockets (from chart)
2. Setting initial Seed Rate Handle (from chart)
3. Positioning Seed Cup Door (by seed type)
4. Calibration: checking predicted seeding rate
Main box seed rate charts begin on page 8. The charts
list proper sprocket pairings and seed-rate-handle
settings for various seeds and seeding rates.
The seed-rate charts are based on cleaned, untreated
seed of average size and test weight. The charts are
based on 7.5 x 20, 4-ply Rib Implement end wheel tires,
inflated to factory specification. Many factors affect
seeding rates including foreign material, seed treatment,
seed size, seed weight, field conditions, tire pressure
and test weight.
Use the charts only as a starting point. Minor
adjustments are commonly required. Set and check the
seeding rate using the procedures following, then
readjust the rate as necessary.