That is actually £50/ha so £20/acre so not that bad even tho it will only do the one crop.This is what gets me, yiu spent nearly £50/acre on a priduct that will already have been used up . You could have put 2 ton of lime on for a few quid more that could last over 5 years
Having said that I admire you for trying new ideas , my moto has been if someone says it won't work I give it the best shot I can to see if it will