Nitrogen On OSR
- Thread starter franklin
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shakerator
Member
- Location
- LINCS
Agree there is denitrification risk. But little leaching risk here, with big surface notill residues and deep clay soils. Plants are actually still growing. And I want urea in the soil by the time the days draw out and stem starts extending. NOT when one sees a bit of extension, no ammonical N boost for 3 weeks and then your wishing the crop was branching from lower down, and don't get a shower to wash it in till mid April. So will get the spreader out last few days of jan unless we get some serious weather
I hate looking at bolting hungry OSR
I wish second wheats had some more N available at the moment too (again if it wasn't a no till system perhaps not)
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Shhhhhh!
Just thinking a bit really. I want a chunk on before Valentines day, as otherwise I will be on holiday. Its going to be raining and windy this week and early next. So by the time it is settled its going to be ten days time. Then how long before the urea is actively taken up by the plant? Is it really a terrible thing to have N in the soil waiting for warmer times, rather than a) warmer times also being wet and delaying N, or b) applying the fert on the optimum day only for it to turn cold again?
I attach two pics of Valentines 2012, and mid March 2012 to show how quick this stuff grows. And also that pikeys will dump stuff anywhere.
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Nice looking crop of wheat. It looks as though it has had some soil disturbance - how did you establish it?
Urea doesn't take long to convert to nitrate. 2 - 3 days in late March, maybe a week or so now.
shakerator
Member
- Location
- LINCS
That's compost ! (Some good research on compost take all suppression but I think it has taken N away from the crop up to now)
JD750 straight in
Good work. No till is supposed to be better for reducing take all. That still wants N in late Feb though. Do you allow for much N in the compost being available to the crop?
farmgrant
Member
At least they were good enough to sheet it up and keep it dry for you!!
- Location
- S.E
@static I live in East Anglia...have done ALL my life. We have farm rainfall records going back over 50 years. I can categorically tell you that February is definitely not the driest month!! That accolade goes to April with approximately 5% of total rainfall. February on the other hand receives about 8% of annual rainfall. It is the 6th driest month of the year!!
Valentines is just over four weeks away! Still do not see the rush. Depends if you want very tall plants with many leaves or nice thick plants with many seeds?
yellow belly
Member
- Location
- south west lincolnshire
my records back 30 years for my farm give February as the driest month and august as the wettest
note other areas may have different rainfall levels
imho the saying February fill dyke comes about because by february soil capacity is reached in most years
when it is dry enough I would be looking at putting some on
when we all grew the higher yields in the 70s and 80s the norm was to start at the end of jan early feb on the frost but now we follow different rules and grow lower yields
the british record for wheat had some on in February
note other areas may have different rainfall levels
imho the saying February fill dyke comes about because by february soil capacity is reached in most years
when it is dry enough I would be looking at putting some on
when we all grew the higher yields in the 70s and 80s the norm was to start at the end of jan early feb on the frost but now we follow different rules and grow lower yields
the british record for wheat had some on in February
Thats great but 30 years of Met Office data would disagree. Even if Feb had 8% of the total, that's still just the same as 1/12 of the total. Perhaps it was from a time when we would have had melting snow add to the dykes? But in any case, been a long time since we have had that here.
Anyway, dykes are a long way from being full here. Which is a good thing too, as the soil is damp enough.
- Location
- S.E
Not really because other months have lower 5% and others higher 11%
I am astounded that people are finding Feb the driest month of the year! Part of living in a maritime climate i guess.
I am astounded that people are finding Feb the driest month of the year! Part of living in a maritime climate i guess.
yellow belly
Member
- Location
- south west lincolnshire
feb and march the 2 driest months at 10 or more mm less than the other months
we do tend to get more rain in the second half 350 mm of the calendar year than the first half 290 mm
- Location
- S.E
Its April and I think September (not got the data to hand atm) as the driest here
October the wettest....as we are trying to drill heavy land full of grassweeds!!
Anyway we digress! As for the fert on the OSR.....imo far too early
October the wettest....as we are trying to drill heavy land full of grassweeds!!
Anyway we digress! As for the fert on the OSR.....imo far too early
MNBVCXZ
Member
- Location
- Central Southern UK
That sounds interesting - would you mind explaining please?
Cheers
If you double the size of a sphere you multiply the contents not twice but eight times.. I cant remember where i keep seeing it but i believe it to be true......which as far as i am concerned means late N on rape = bigger grains.
BTW OP didnt mention urea in his first posting, or if he needs his rape pushing on. Virtually all the rape i have doesnt really need N until ESE as there are plenty of branches which will have buds hiding in them.
Many years ago i grew WOSR with Sewerage sludge underneath it, ommitting ithe sludge from one field, spring comes along no need to put any N on as crop doing very well as there was N being released from the sludge, except the field which didnt have any sludge started to get leggy from a distance, i ignored it then realised what had happened and rushed out really late with liquid N. The result was a shade under 5 t/ha on the late applied field far outweighing any of the others.
Cheers
If you double the size of a sphere you multiply the contents not twice but eight times.. I cant remember where i keep seeing it but i believe it to be true......which as far as i am concerned means late N on rape = bigger grains.
BTW OP didnt mention urea in his first posting, or if he needs his rape pushing on. Virtually all the rape i have doesnt really need N until ESE as there are plenty of branches which will have buds hiding in them.
Many years ago i grew WOSR with Sewerage sludge underneath it, ommitting ithe sludge from one field, spring comes along no need to put any N on as crop doing very well as there was N being released from the sludge, except the field which didnt have any sludge started to get leggy from a distance, i ignored it then realised what had happened and rushed out really late with liquid N. The result was a shade under 5 t/ha on the late applied field far outweighing any of the others.
What rate?
100t/ha?! + when we did 30t you could hardly see it!