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| 28" rows make for 18,668.5 row feet per acre (43560/2.333)
So the seed spacing is 18,668.5 divided by the proposed population. 32K then would be spaced 7 inches apart. The chart in my 7000 planter book says 7" is the spacing for 30,200 in 30" rows. 30,200 x 30 / 28 = 32,357. From past computations I'm sure the seed numbers have been rounded because they never match the sprocket changes compared to one particular set of sprockets.
With 2040 chain the sprockets for 7" are 15 driver 13 driven with 40 chain 30 driver 26 driven. This chart has been posted by others regularly in the spring and I think within the last week this year on this forum. Recommended driving speed 3 to 6 mph.
18,668.5 / 130,000 = .1436 foot spacing, 1.723 inch spacing, 6.96 per foot. I'd be worried about killing sprouts with a crust in my field at that spacing.
Gerald J. | |
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Bought 7000 planter, population question
