User Manual

SEEDHAWK®TOOLBAROPERATOR’SMANUAL36
4.11 PRIMARYOPERATIONVARIABLES
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4.11.1 PACKING
Positive soil to seed contact is essential for optimum seed germination.Soil type, extent of
tillageordisruptionandmoisturecontentallinfluencegerminationpercentages.Therearesix
primaryvariablesthataffectthequalityofsoilpacking:
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 PackerTirePressure
 FieldTravelSpeed
 PackingandTripPressure
 MudScraperAdjustment
 Cornering
 FurrowDepthandWidth
 KnifeLateralSeparation
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4.11.2 PACKERTIREPRESSURE
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Ensure that the Pneumatic packer tires are inflated to the appropriate pressure. Semi‐
Pneumaticpackertiresdonot,ofcourse,requireairpressureadjustment.
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4.11.3 FIELDTRAVELSPEED
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Select a fieldtravel speed that willallow productivity, but willnot compromiseaccurateseed
and fertilizer placement.Higher field travel speeds tend to cause excessive soil disturbance
and can throw soil into adjacent furrows resulting in deeperseed depths.Higher field travel
speedsalsoreducetheeffectofsoilpackingbyreducingpackingpressure.
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4.11.4 PACKINGANDTRIPPRESSURE
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Determining and setting effective packing and shank trip pressure allows for optimum seed
germination rates. Setting the packing and trip pressure too high may result in:more rocks
being pulled out of the ground, higher wear on shanks and opener parts, excessive packing
pressureandlesstrippinginhardersoils.
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4.11.5 PACKINGANDTRIPPRESSURETIPS
 Itmaybedesirabletofurtherincreasepackingandtrippressureindrier,sandiersoils.
 Higherpackingandtrippressurescanresultinmorerocksbeingpulledoutofthesoil.
 Higherwearonopenerpartsmaybeexperiencedwithhigherpressure.
 Soilpackingwillbe
morefirmwithhigherpackingandtrippressure.
 Areductioninshanktrippingactionwillbeexperiencedinfirmersoilconditions.