Great-plains YP2425A Material Rate User Manual download pdf (Page 12)

10 YP2425A Table of Contents Metric Charts Great Plains Manufacturing, Inc.

401-626B Table of Contents Metric Charts 2012-02-29

Checking Planting Rate

Singulated seed charts are based on cleaned and sized

seed singulated with the recommended disk. Extreme

seed size variations and foreign material can affect the

planting rate.

Any material difference between chart and ﬁeld rates

implies a mechanical malfunction, a planter setup error

or extremely worn planter components. You can verify

your setup and planter performance by measuring seed

placement and spacing over a relatively short distance.

The columns to the right provide example data for a rate

check, in U.S. customary units and a similar example

metric units.

Checking Singulated Rates

1. Determine the sample distance to check. Find your

row spacing in the table at right.

2. Note the number of rows to sample. Adjust the

planting depth to a shallow setting on one or two

outside rows (per table). Tie up the press wheel

arms with wire or bungee to prevent furrow closure.

3. For populations above 100 000 seeds/acre, use a

sample size of 1/1000th acre.

For populations below 100 000 seeds/acre, use a

sample size of 1/200th acre.

4. Conﬁgure the planter for the chart rate, either using

the chart settings for sprockets, or, with hydraulic

drive, selecting the rate on the seed monitor.

Figure 3

Furrow Check

29247

Rate check data is from sheet “Check” in:

US Example:

Planter: YP2425A-2430

Crop: Soybeans

Density: 3000 seeds/lb

Seed Disk: 817-798C

Target Population:

123,000 seeds/acre

Metric Example:

Planter: YP2425A-2470

Crop: Soybeans

Density: 6614 seeds/kg

Seed Disk: 817-798C

Target Population:

438 000 seeds/hectare

Maximum Planting Speed:

5 mph

Maximum Planting Speed:

5 kph

Chart Seed Spacing:

1.7 inches

Chart Seed Spacing:

3.2 cm

Rows to Sample Length of Sample Run

Row Row 1/1000th 1/200th

Spacing* Count Acre Acre

7.5in Single 4 17ft 5in

8in Single 4 16ft 4in

9.5in Single 4 13ft 9in

10in Single 2 26ft 2in

15in Single 2 17ft 5in 87ft 1in

20in Single 1 26ft 2in 130ft 8in

22in Single 1 23ft 9in

118ft 10in

30in Single 1 17ft 5in 87ft 1in

36in Single 1 14ft 6in 72ft 7in

38in Single 1 13ft 9in 68ft 9in

40in Single 1 13ft 1in 65ft 4in

30in Twin 1 pair 17ft 5in 87ft 1in

36in Twin 1 pair 14ft 6in 72ft 7in

38in Twin 1 pair 13ft 9in 68ft 9in

40in Twin 1 pair 13ft 1in 65ft 4in

* Not all spacings may be offered on implements

31442

covered by this manual.

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Great-plains YP2425A Material Rate User Manual Page 12

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