Posted by fixerupper on September 04, 2015 at 13:06:11 from (100.42.82.100):
In Reply to: 30in row vs 36in posted by hoosierhog on September 04, 2015 at 10:39:31:
Compared to 36", 30" spacing shades the rows quicker for better weed control and spaces the plants a twitch farther apart for less competition from the neighboring plants on each side of it. In corn you might get five to ten bushels per acre more if you are looking at 175 bushel corn. When the population gets above 32,000 plants per acre or thereabouts the corn plants are getting too close to each other in wide rows. 20" rows are seeing a slight comeback in my neck of the woods. Deere made a 20" cornhead in the sixties so there must have been a small demand for them at that time. I think Gleaner had a 20" head too now that I think of it. If you only have ten or 20 acres you can't really justify paying a whole lot more for a 30" planter. The 7000 planter is definitely a better planter than the 56. I switched from an IH 58 to a 7000 finger planter 20 years ago and it was like I advanced 100 years in seed spacing and placement. A neighbor of mine who retired last year planted 300 acres a year with a 4 row 36" 7000 that was bought new when the 7000 series was just out, the early 70's. The planter was used on his farm only. He farmed 39 years and bought it from the farmer who farmed that land previously. If it was bought new in let's say 1973 that's 41 years at 300 acres per year. That's 12,300 acres for a four row planter. I'm sure a lot of parts were replaced several times but that shows the longevity of those old Deere planters.
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