Ah yes I've seen that before. What was it in?
AN bad for the soil then? TSP good?
Have you tried gypsum or Calcifert S to open up the claysUsed lots of fibrophos here it's pretty good and can get it cheap. Using polysulphate in the spring this year because unbalanced potash releasing clays don't release potash!
Presumably you have deficiency in boron, copper and mag too?That field is not typical of farm , most are nicely balanced
Place an AS/Dap + boron at Spring drilling with added copper will be foliar copper this year, spray foliar Mgk+ during season and have had good results so will continue
My problem at moment is I have K at 5-7% on the base
Is it available? How can I unlock it. Can it be done?
So inherently you'd be high mag, low ph soils? Presumably CEC below 12 or so or mag lime has been a lot cheaper tha ca lime in your area? Why do you think K is so unavailable in a lower ph scenario?Boron and copper will show low everywhere
Mg not so much deficient but starting to fall off now
May need to start using kieserite
Was very high in mg but using high calcium lime has helped along with sulphur
Easy enough to balance