It's coming in the seed. Have a field of costello wheat this year, almost 20 years lea, wouldn't have got dung possibly ever as far as we can remember, would have got a bit of slurry alright. Nice random scattering of wild oats in it, no patches and all plants are in the drill lines. We can come to no other conclusion only seed. It's just annoying when we are paying for blue label seed, not to mention three evenings going around 15 acre field pulling them and then the fear that you've missed a few