Performing Accurate Rate Checks

It is important to conduct accurate rate checks as the following variables affect seed and fertilizer rates. See RATE CHECK-METHOD 1 or RATE CHECK-METHOD 2 in this section for accurate ways of checking seed or fertilizer rates.

1. Quality of Seeds-Two bags of seed that weigh the same may have different quantities of seed because of moisture content, density, residue, unfilled kernels, or simple seed size.

2. Type of Fertilizer-Nitrogen fertilizers generally weigh less than high potash or phosphorus fertilizers.

3. Tires-Size, type, and air pressure affect seeding rates. Use recommended tire size and proper air pressure listed in the Preparing the Machine section.

4. Operator Judgement-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.

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NOTE: Gear teeth (A) should mesh with drive worm gear, but not "bottom out" on drive worm. Bracket (B) can be adjusted to provide proper gear mesh.

5. Acremeter-Worn out counter or chipped teeth. Worm gear loose on shaft. If acremeter accuracy is suspect, refer to CHECKING ACREMETER ACCURACY in Service section.


A-Gear Teeth
B-Bracket

N49804

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