Reasons for Checking Quantities Drilled

The following variables cause variations between meter setting and actual seeding rate:

• Quality of Seed-Two bags of seed that weigh the same may have different quantities of seed because of moisture content, residue, unfilled kernels, or seed size.
• Wheel Slippage-Slippage can vary depending on tire size, seed bed condition, soil type, and load in machine. Speed also affects wheel slippage.
• Tires-Size, type, and air pressure affect seeding rates. Use the recommended tire size and proper air pressure in the chart.
• Operator Judgment-Land contains more or less area than assumed. Overlapping rows or leaving too wide a space between rows. Turning at row ends without lifting furrow openers.

  Recommended Tire Size and Type (in/mm)	kPa	(bar)	(psi)
  7.60 x 15 in. 4 PR (193 x 381 mm) Rib-Implement	194	(1.9)	(28)
  7.60 x 15 in. 6 PR (193 x 381 mm) Double-Rib	221	(2.2)	(32)
  7.50 x 20 in. 4 PR (191 x 508 mm) Rib-Implement	194	(1.9)	(28)
  7.50 x 20 in. 4 PR (191 x 508 mm) Double-Rib	194	(1.9)	(28)

   

• Acremeter-Worn counter or chipped teeth. Worm gear loose on shaft. See checking acremeter in Service section.

AG,OUO6074,968 -19-09MAY00-1/1