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c/o Mark Burrow 11221 N 100St Altamont Ill. 62411 Cell 618-553-7063 Email - mburrow@frontiernet.net Gramlow LTD Ph. 701-375-6330 richard@gramlowltd.com |
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FAQ'S
Why twin row corn?
Why twin row soybeans?
Why TRC?
Why doesn't John Deere build a twin row planter?
Is diamond pattern seed placement possible with the 1790TRC and is it important?
- Corn populations may be increased without crowding plants and roots
- Even at higher populations, planter meters run slower for excellent in-row spacing
- Use your current 30” row corn head - Less weight, moving parts, and maintenance
- Use your current 30” row wheel spacing
- Works with 30" strip-till equipment
- May be side-dressed with 30” equipment
- Better resale value for 30” row equipment
- Quicker and more dense canopy to shade weeds and capture sunlight
Why twin row soybeans?
- Yield advantage - While I believe there is a yield advantage in corn, many factors enter into success such as varieties, population, nitrogen management, and fungicides. However with soybeans, there is no need to change management practices for the yield advantage. The following link is a Monsanto study on row spacings in soybeans. In this particular study in Illinois, twin rows outyielded 15" rows by an average of 4bu/A and 30" rows by an average of 5bu/A over a 4 year period. Monsanto Learing Center
- Seed cost savings - Soybean populations may be decreased approx.15% compared to a typical 15”row rate. We normally plant 140K seeds/A or less.
- Quicker canopy than 30”rows, yet more air circulation and sunlight penetration to lower leaves, than 15” rows
- Works with 30" strip-till equipment
- Wider spacing than 15” rows, makes spraying beans easier, even with duals
- Late season spraying with narrow tires causes less damage to twin rows, than 15" rows
- Less harvest loss from platform end divider - Fits easily between rows
Why TRC?
- Switch to narrow row corn economically - For a fraction of trading to 15”or 20” equipment
- No changing planter from corn to beans other than meters and quick hitch position
- May be switched to plant 30” corn in minutes if desired
- Resale value for John Deere 1790® planters is excellent
- Deere® parts availability
- Deere XP® row units are second to none in durability - compare to other twin row planter units
- Planter may be returned to original configuration in about a day. Virtually no permanent alterations to the original planter.
Why doesn't John Deere build a twin row planter?
- The answer is: they do, the John Deere 1720® and the new 1725T® with MaxEmerge™5 twin row units . It's just not targeted for the Mid-West. It is a 36"-38" row center planter, mainly for crops on beds in the southern US. This information was taken from an article published by Farm Futures magazine on Jan 30, 2012. http://farmfutures.com/story.aspx/deere-takes-twin-row-planters- south
Is diamond pattern seed placement possible with the 1790TRC and is it important?
- No, timed seed placement is not possible at the present time.
- It does not seem to be much of an issue. For example, in the twin row at 36000 seeds/A, plants are 7.5" apart when directly across from each other and about 9.5" apart when perfectly spaced between (Plant spacing in the row is about 11"). As populations increase this difference becomes even less.
- Seed placement between the twin row is random, but spacing within the row is very good as meters are running about half speed. As long as seedbed is smooth, planting speeds of 6-6.5 mph are not a problem. Looking at the emerged crop, sometimes plants will be directly across from each other, but a few hundred feet down the row, they will be perfectly spaced between each other. The field has that "checked" planted appearance as shown in our pictures.
- Some people consider indexing to be important, but in the bigger picture I think the more important factor is good overall spacing with adequate room for roots and stalks. A commonly quoted rule of thumb is that corn plants that are closer together than 4" compete like a "double".