Disc drill "hair pinning"

[dondeere]

Is there any direct type disc drill that can be compared to the cross slot type inverted T opener to avoid hair pinning?

 

[Knockie]

Pillar Lasers? @tw15

 

[dondeere]

Pillar Lasers? @tw15

You've lost me?

 

[tw15]

Spot on there knockie , the pillar laser disc hoe Coulter doesn't hairpin like other disc drills .

 

[Knockie]

http://www.pillarlasers.com/equipment/FarmEquipmentProductBenefits/

 

[dondeere]

Just looked at the link thanks.
I don't suppose you know what sort of pressure can be applied per coulter?
Heavy clay soils here that can get hard when very dry.

 

[dontknowanything]

Just looked at the link thanks.
I don't suppose you know what sort of pressure can be applied per coulter?
Heavy clay soils here that can get hard when very dry.

It's a double angled disc, so it pulls itself into the ground.

 

[dondeere]

Looks as tho it may move quite a lot of soil.
Anyone seen one in the flesh?

 

[dontknowanything]

Looks as tho it may move quite a lot of soil.
Anyone seen one in the flesh?

They say it moves less than a tine and more than a disc, which I think is fair.

@tw15 very kindly hosted me for a morning so I could look at their machine, http://ooofarmer.wordpress.com/2014/09/28/days-38-39/

 

[dontknowanything]

Is there any direct type disc drill that can be compared to the cross slot type inverted T opener to avoid hair pinning?

T-Sem also

 

[tw15]

They are going to do a lower disturbance hoe coulter , so if you don't want the seed in a inch wide band but in a tighter row that would be the way to go . At the moment and when dontknowanything came down the discs are on there last legs are are now going to be replaced over the winter . Might even get a few narrow hoe coulters to see what they do just to try. On the whole very pleased with the drill just wants to be wider .
By having a separate seed cart does leave a lot of options as to what you can do and is not as big deal as first seems . As long as the drawbar pin is in it just follows along .

 

[Jim Bullock]

We have used Moore, John Deere, Krause and Kuhn disc drills and they all "hair-pin" un-decomposed cereal straw if the soil is anything but hard and/or dry. The answer is to bale the straw, go for spring crops by which time the straw has become more friable (but can still hair-pin) or only use a disc drill after a crop producing fragile residue (peas/beans/OSR). Where we have cereal straw to deal with we find a tined drill a much better option.

 

[SilliamWhale]

Sharp discs help. I dont recognise it as a problem to be honest

 

[Robert]

Techmagri t-sem contour?

http://www.techmagri.com/accueil.php#page121615

Why aren't these seen in the uk?

 

[Clive]

as Jim says the best solution is rotational and not mechanical

 

[dondeere]

I recognise that a good rotation is important but you cannot always help the amount of residue left. Eg having to cut low to gather laid/lodged crops and baling straw is not always a option on heavy clay land as the compaction left by big balers and chasers can ruin a otherwise healthy soil.
Tines are great but move far to much soil increasing blackgrass and in heavy trash and lots of chopped straw blocking up is always a issue I have found.

 

[SilliamWhale]

I recognise that a good rotation is important but you cannot always help the amount of residue left. Eg having to cut low to gather laid/lodged crops and baling straw is not always a option on heavy clay land as the compaction left by big balers and chasers can ruin a otherwise healthy soil.
Tines are great but move far to much soil increasing blackgrass and in heavy trash and lots of chopped straw blocking up is always a issue I have found.

What is it your rotation?

If you have massive wheat straw crops then the last thing to choose would be rape.

 

[Simon Chiles]

Sharp discs help. I dont recognise it as a problem to be honest

This is true, also positioning of seed boot and opener down pressure also play a part. If you're getting hair pinning with a 750 the chances are it's you that's at fault and not the drill. I've only ever seen it occur once ( where the combine driver stopped dead whilst chopping beans with a 30 ft header and left great piles in the field ) in over 30,000 acres of drilling. I would think that the same is true of any single disc opener ( eg Moore Unidrill ) as they are basically the same principle. I've never used a triple disc still so can't comment on them.

 

[dondeere]

Winter wheat,osr,spring barley,spring beans. Cover crops are sown for all the spring cropping and suffer badly if there is lots of chopped straw,where long stubble is left they're much better.

 

[dontknowanything]

as Jim says the best solution is rotational and not mechanical

Careful of the tail wagging the dog (this could go either way)