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sweet corn plates

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dave from MN

06-04-2005 18:33:42




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Please help. No one seems to know what plates to use for my sweetcorn. Corn is "phenominal"?and " Gourmet" no other info on it. Wife picked it up. Called the place and when I asked what plates are to be used with the corn the say " uhh, plates?" I will be using an IH 256 planter and doing just under 2 acres. I have 7 lbs of seed. I can not find any one that can give me plates cause they need to know what the seed dealer calls for. See my dilema? I am first time on this planting sweet corn thing so any help would be helpfull. Wife is getting a little uptight cause it aint in the ground yet and her darn radishes are growing like crazy." She says I cant plant her till her d#@N corn is in. Any ideas>?

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ejr-IA.

06-05-2005 10:03:19




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 Re: sweet corn plates in reply to dave from MN, 06-04-2005 18:33:42  
I know theirs many seed sizes.I use a COX-24 Lustran brand plate it works for me maybe a few doubles on smaller seeds.



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Hugh MacKay

06-05-2005 02:47:32




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 Re: sweet corn plates in reply to dave from MN, 06-04-2005 18:33:42  
Dave: I've planted a bit of sweet corn over the years, and the problem you are having was always there with sweet corn. I think the problem lies with small volume. Had you bought a bushel as it came from packer, you would have the information. I think small volume seed suppliers repack seed into smaller volumes, thinking it will be seeded by hand or small hand push seeders, thus this information will not be needed.

As CNKS mentioned, you will in actual practice never completely eliminate cracked seed or doubles. Take a sample of seed with you to plate supplier. Also take along a rubber band long enough to go around a seed plate. Visually find the plate that matches your seed. When you get down to 3 or 4 close possibilities, put the rubber band around plate and put some seeds in cells, behind rubber bands.

You may as well buy several plates as seed you get next year could be different size. That fact cant be avoided, growing plants go with the season. As CNKS said, "Until you get in actual field conditions, you will not be 100% sure plate size is correct." I have seen this same thing with grain corn and you had the seed plate numbers from supplier. These problems worsened after the introduction of air planters as well. Seed was sized far better back 40 years ago than it is today.

Back in my farming days I had two planters, one being an IH 4 row air planter and a 2 row 3 point John Deere. Often used that little plate planter in small fields, headlands or finishing off triangle shaped fields. Seed sizing was a problem that increased over the years. It will never improve as none of the new planters require the seed as acurately sized. Precisely why old planters are cheap.

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Jim Becker

06-05-2005 10:51:00




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 Re: sweet corn plates in reply to Hugh MacKay, 06-05-2005 02:47:32  
I never heard of the rubber band trick but it sounds like a good idea.

One other thing you can do as a final check is "test planting" on a hard surface (like the driveway). You should end up with a row of seeds laying on top of the ground that you can check for skips and broken seed. You need to run this test at the same speed you intend to run in the field. Sometimes you won't get skips at slow speed even if it skips at higher speed.

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Jim Becker

06-04-2005 20:27:40




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 Re: sweet corn plates in reply to dave from MN, 06-04-2005 18:33:42  
Yeah, what CNKS said. The variety doesn't tell you what plate. It is determined by seed size, which can vary from one batch/year to another with the same variety of corn. A lot of seed is (was?) tagged with the plate number.

A master plate can help you determine the right plate.



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CNKS

06-04-2005 19:41:43




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 Re: sweet corn plates in reply to dave from MN, 06-04-2005 18:33:42  
Riverbend is correct -- As one who did research with different corn hybrids, I probably had 8 or 10 different plate sizes. If you have a local supplier, take your seed there and estimate what will fit. However, you won't be able to actually tell until you put the plates and seed in your planter. Ideally, when you turn the drive wheel you want one seed per cell to drop, and you don't want any cracked seed. In the real world you will crack a few and drop a few doubles -- but if the seed manufacturer does not recommend a plate, you just have to experiment with different ones. If your seed was designed for an air planter, there is no recommended plate size.

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riverbend

06-04-2005 19:24:59




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 Re: sweet corn plates in reply to dave from MN, 06-04-2005 18:33:42  
Lincoln ag has plates for IH planters. They give their cell dimensions in 64th. I'm using the B7 plate (dims. 36-12-20) for flat seed and the B25 (31-15-20) for round seed with JD 70 series planters. That would translate into C65 for flats and C25 for rounds in IH plates. Check to see that your seed is about the same size.



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