DAP rates

[Clive]

What kind of rates are being used with OSR ?

i'm at 100kgs /ha (VRA) but have read that it can be a bit scorchy ? 100kgs gives 18kgs N /ha which is not a lot and less than the 20kgs N we used as UAS liquid on the 750a

Anyone had issues with DAP and seedling scorch at all ?

 

[fred.950]

111kg/ha here and never had any issues. We are trying Digestate on half this year so will be interesting

 

[John]

185kg for us, through fert spreader

 

[Richard III]

What kind of rates are being used with OSR ?

i'm at 100kgs /ha (VRA) but have read that it can be a bit scorchy ? 100kgs gives 18kgs N /ha which is not a lot and less than the 20kgs N we used as UAS liquid on the 750a

Anyone had issues with DAP and seedling scorch at all ?

I think it's the concentration down the row that's important. I use 40kg/ha on 45cm row width, any more pushes the rape too hard, causing transient trace element issues in my experience. On a 22.5cm row I would go up to 80kg/ha ect.

 

[An Gof]

185Kg/Ha here broadcast before drilling. I’m not expecting any scorch problems with that

 

[whiteford]

150kg in the row, 45cm spacing. Have used 200kg previously but thought it quite an expensive exercise, rape looked fantastic all winter though!

 

[Clive]

should I worry abut 100kgs in 25cm spacing ?

Maybe do the remaining area at 50kgs ?

 

[Richard III]

Be easy to do an experiment on your drill, 50, 75, 100?

I’d bet on 75kg being the best, but different soils might respond differently?

 

[Clive]

Be easy to do an experiment on your drill, 50, 75, 100?

I’d bet on 75kg being the best, but different soils might respond differently?

Sounds like a plan on the area we have left to drill

 

[Kiwi Pete]

I broadcast some (40ha) yesterday
300kg DAP + 10kg seed + slug treats per hectare

 

[richard hammond]

Sounds like a plan on the area we have left to drill

I have used 80 and 110 down the spout for 2 years on one farm

 

[Bob lincs]

We use 50kg I the row at 38cm row spacing . We have experimented in the past at 50-75and 100kg but could se no real difference . The pic below is the difference between 0kg and 50kg .

 

[whiteford]

I've certainly never seen scorching at any rate with DAP; but I do farm in the north of Scotland so conditions will certainly differ from yours clive.

 

[An Gof]

We use 50kg I the row at 38cm row spacing . We have experimented in the past at 50-75and 100kg but could se no real difference . The pic below is the difference between 0kg and 50kg .

Great photo, be interesting if you had a yield map to see the difference at harvest.

 

[Brisel]

Great photo, be interesting if you had a yield map to see the difference at harvest.

I'll bet it's very little difference to yield as long as the crop survived the flea beetle & pigeons. It does make you feel better all winter & arguably builds a better plant in early spring that should have lower N winter losses if it has responded well enough to turn all the DAP into biomass.

 

[Will7]

Last year I did 120kg dap down a 250mm row, this year I have upped it 160kg. I do get a degree of separation with the seedhawk coulter

 

[average farmer]

Going at 44kg /H here I’ve only got 2 bags

Might top N up with AN later if I’ve got a crop