Kinze 4900 - Determining Pounds Per Acre; Determining Bushels Per Acre

M0290-01Model 4900
2-40 Rev. 8/19
TM
Machine Operation
3. Measure  of an acre. See chart for correct distance for row width being planted. For example, planting 30"
rows  of an acre is 17' 5".
NOTE: Seeds may bounce or roll when planting with closing wheels raised and planting depth set shallow
affecting seed spacing accuracy.
4. Count seeds in measured distance.
5. Multiply number of seeds placed in  of an acre by 1000. This gives total population.
Seed count can be affected by drive wheel and seed meter drive ratio, tire pressure, and/or seed meter malfunction.
1. If seed check shows average distance between seeds in inches is significantly different than seed rate chart
indicates, first check drive ratio between drive wheel and seed meter. Check drive wheel air pressure, check for
incorrect sprocket(s) in driveline and check drive and driven sprockets on transmission(s) for proper selection.
2. Check for seed meter malfunction. For example, if spacing between kernels of corn at the transmission setting
being used is 8" and a gap of 16" is observed, a finger has lost its seed and not functioned properly. If two seeds
are found within a short distance of each other, finger has metered two seeds instead of one.
 Acre Seed Population Count Row Width/
Distance
Distance 26'2" (66.5 cm) 17'5" (44.4 cm)
EXAMPLE: 30" row spacing 17' 5" equals  acre.
26 seeds counted x 1000 = 26,000 seeds per acre
DETERMINING POUNDS PER ACRE
Seeds per acre ÷ Seeds per pound (from label) = Pounds per acre
If seeds per pound information is not available use the following averages:
2,600 seeds per pound for medium size soybeans
15,000 seeds per pound for medium size milo/grain sorghum
4,500 seeds per pound for medium size cotton
DETERMINING BUSHELS PER ACRE
Pounds per acre ÷ Seed unit weight = Bushels per acre
Average Unit Weight of:
1 Bushel Soybeans = 60 Pounds (27.2 kg)
1 Bushel Milo/Grain Sorghum = 56 Pounds (25.4 kg)
1 Bushel Cotton = 32 Pounds (14.5 kg)
If seed population check shows planting rate is significantly different than seed rate chart shows or if a particular
meter is not planting accurately, see “Vacuum Seed Meter Maintenance” on page 6-18.