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Disc Harrow Questions

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Bob

02-05-2000 20:51:34




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I recently bought a John Deere 730 and want to buy a disc harrow. I've seen ads for angled harrows and box harrows. There also are hydraulic and non-hydraulic units.

I'm only going to be using this on 2 or 3 acres. Hydraulic sounds nice but I'm not sure how much it adds to the cost.

Specific questions: 1. Why would I choose angled vs. box? 2. If my tractor (outside of wheel to outside of wheel) is 8' wide, should I get a disc harrow at least that wide? 3. Should I consider a hydraulic unit?

One more question. I want to plant in a field that currently has alfalfa growing in it. I want to make part of the field an orchard and part corn. The alfalfa is spotty but all over. Do I need to plow the field first or can I go straight to a disc?

Thanks,

Bob

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Halbert09

02-07-2000 13:36:19




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 Re: Disc Harrow Questions in reply to Bob, 02-05-2000 20:51:34  
If you only have a few acres, I would only get something a little wider than the tractor, like 10 feet; why kill yourself and the tractor. Consider how much room you have to maneuver at row ends, fence lines, etc.; the wider the disk, the more you have to be careful, at least with a wheel disk or 3-pt disk you can back up if you have to. I would look for something used if you live in an area with used equipement or auctions. Like the other person said, big farms aren't even using disks and plows as much, so you should be able to find something and you don't have to be a genius to repair these things. I would forget about buying new, unless it is for a small 3-pt disk to go between the trees; new is either very expensive or junk. Buy something used that you can still get parts for; maybe end up with 2 disks, one narrow and one wider one. Good luck.

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Dave in Mo

02-07-2000 04:04:57




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 Re: Disc Harrow Questions in reply to Bob, 02-05-2000 20:51:34  
Bob, you can pick up a new 6' wide double row disc for about $500 at a farm supply store like Buchheits. It's all you'll ever need for 2-3 acres. I imagine anything with a hydraulic cylinder is going to be expensive. Your machine is huge for such a small field so I'd save money for a (2) bottom plow which should be about $250 new (with no coulters wheels) at same place. You will need the plow. You'd also better think about how you're going to plant the corn too. That's going to take a planter so ask around to see if you can borrow one from a neighbor. I put in about 3 acres a year of corn with an 8N and it is plenty to do all the work so I know your tractor won't break a sweat. In mid April we we plow, then disc in order to prevent erosion during the winter. Hope this helps.

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Tim(nj)

02-08-2000 17:40:32




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 Re: Re: Disc Harrow Questions in reply to Dave in Mo, 02-07-2000 04:04:57  
That 730, if it has 3-pt, is Cat. II. The 2-bottom Cat I. plow will not work right behind it. Centerline draft will be wrong and you'll have ridges of unturned soil. Those farm store plows are junk anyway (at least to those of us accustomed to real plows). Around here, you can pick up a good 3-bottom hydraulic trailer plow for around $250 or so. On the auction scene, a good 10' hydraulic wheel disk also goes reasonable around here. Saw an Oliver 252 10' with good blades go for $350. It will do a much better job than one of those strap-iron "bend-'em up" disks that you get from places like TSC and Central tractor. If you've got heavy alfalfa sod, even after it is plowed, a 3-pt disk will just bounce over the top and won't do much good, as I learned with my grandfather's ABO22 Ferguson disk and MF65 tractor when I was in high school. Weight provides penetration on a disk harrow, draft control doesn't mean a hoot.

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Halbert09

02-09-2000 13:36:13




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 Re: Re: Re: Disc Harrow Questions in reply to Tim(nj), 02-08-2000 17:40:32  
Tim- I believe you told him right about the 2-bottom 3-point not being any good for that tractor; it is mostly a case of the wheel track being to wide, that is the plow is too far from the previous furrow. I do think that a 3-bottom 3-pt plow would work ok, or even an old 2-bottom wheel plow, what do you think? I still have one of those old ABO22 disks, but some of the bearings/spools are shot. Do you know of any way of replacing these at REASONABLE cost, ie. not spending $200-300 dollars per bearing unit which is crazy?

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Tim(nj)

02-09-2000 16:06:35




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 Re: Re: Re: Re: Disc Harrow Questions in reply to Halbert09, 02-09-2000 13:36:13  
I think my post may have upset somebody, that wasn't my intention. It's just that a 730 is twice the tractor of an 8N, and that a two-bottom TSC plow and 6' foot disc may work fine on an 8N in frequently worked soil, but the 730 would tear those implements to pieces in heavy ground like that alfalfa sod. Just didn't want Bob to get into an unexpected mess. 3-point equipment isn't as universal as some people are led to believe, especially on the older tractors. Should've used more tact, I guess.

Anyway, a two bottom trailer should work, as I believe there would be enough hitch adjustment on the tongue to make up for the wheel track. Trailer plows are cheap around here. I saw a 4-bottom Oliver trailer with hydraulic lift sell for $45 last month. Just needed shares and shins.

As far as the Ferguson disk, I think the only recourse is to find a parts machine. I don't use ours very often anymore, just in the vegetable and pumpkin patches, less than 2 acres per year. Last bearing half I put on it in 1994 was $99.00 A whole new bearing and spool would be around $300, you should be able to pick up a whole other ABO22 disk for that at a sale, in good shape.

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Dave in Mo

02-09-2000 04:25:22




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 Re: Re: Re: Disc Harrow Questions in reply to Tim(nj), 02-08-2000 17:40:32  
Well Bob, there you have it. Looks like you can't be wrong. Just do it the way you want to. I'd be more concerned about what to do after the ground is plowed and disc'd. How do you fertilize and seed on the cheap?



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Tim(nj)

02-06-2000 10:57:55




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 Re: Disc Harrow Questions in reply to Bob, 02-05-2000 20:51:34  
When you say box type, do you mean box-frame tandem disk?

Wouldn't hurt to spray Roundup first.

The nursery next to me recommends subsoiling to a depth of 24" before planting fruit trees.

Plow as deep as you can without bringing up too much subsoil.

I personally would use the 730's power to pull a heavy 9 or 10 foot disk with 22" blades rather than a lighter 13' with 18" blades. The narrower but heavier disk will do a better pulverizing job on plowed sod than the wider, lighter disk at the the same speed.

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highboyford

02-06-2000 10:45:49




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 Re: Disc Harrow Questions in reply to Bob, 02-05-2000 20:51:34  
The 730 will handel a regular 13 foot (double row)disc without a problem I wouldnt use a tillage disc because those are a load to pull(13 foot tillage made for much larger tractor)I also would use hydraulics or at least one with wheel lift and manual lift because if you ever have the need to relax and decide to play in the mud with the disc and get stuck kind of hard to get out without wheel transport(could unhook disc and then drag out with chain but alot easier to just raise disc)As far as the alfalfa goes nothing plows harder than a good old strand of alfalfa with roots about as thick as your thumb.I would plow first and hold onto your hat and keep in mind nothing is wrong with the tractor if it seems to be plowing hard just make sure the front wheels are tight.(this not a knock on the 730 the 730 is a real good heavy tractor to plow with alfalfa is just a pain)

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Fudd

02-06-2000 10:06:13




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 Re: Disc Harrow Questions in reply to Bob, 02-05-2000 20:51:34  
I agree with getting a wheel type disk that raises hydraulicly that's 12 Ft. wide or so. Also think ahead about your corn and trees. You will need to plant, cultivate and harvest the corn and when you plant trees, leave enough space to disk the weeds between them or mow between them. BTW Plowing is really FUN!!!!!



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paul

02-06-2000 09:08:08




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 Re: Disc Harrow Questions in reply to Bob, 02-05-2000 20:51:34  
If at all possible I would plow up the alfalfa. Will take a lot of passes to do a poor job with a disk...

Now, up here where I live we use a different language, so I hate to even guess what type of disk to recomend. :) This forum is the first time I heard the term 'disk harrow'. Here we have a 'disk' which has one or 2 rows of blades that turn at an angle - heavy offsets can do pretty good tillage, while regular angle disks do medium tillage behind plowing. A 'harrow' is something that drags fingers on the ground to level ground or very lightly incorporate chemicals or seeds.

Actually for farming around here disks are used very little any more, only in special conditions. It's plow (or v-rip) in fall, then field cultivate (with a harrow attachment) and plant in spring.

I do not even have a guess what a 'box disk harrow' is! :)

--->Paul

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Jimbo

02-06-2000 05:21:43




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 Re: Disc Harrow Questions in reply to Bob, 02-05-2000 20:51:34  
You have the power to handle a 12-13 ft disc harrow with ease. I'd buy something that would at least take out the tractor tracks and with hydraulic pick-up (never know when you might need to go break-up the neighbors ground down the road). I'm not familar with the "box" description, only offset (which are harder to pull because they go almost as deep as a plow) and tandem discs, which is the one I'd recommend for you. If you have a plow or could borrow one, I'd would plow under your alfalfa first. Good Luck.

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