The case of Sturges v Bridgman (1879) shows that even if you knew of the nuisance beforehand, this shall not provide the farmer a defence, as 'coming to the nuisance' is not a recognised defence.
However, that said, any claim for a nuisance based tort seems shaky. Where there is no physical damage, the courts consider the locality, as per St. Helens Smelting Co. & Tipping (1865), "What would be a nuisance in Belgravia would not be so in Bermondsey". It is likely that, having regard to the area and nature of the nuisance, that the courts would unsympathetic, should it go so far. Following the Murdoch v Glacier Metals (1998) case, if the nuisance is one that is of the area as standard (e.g.: living next to a factory and being woken by lorries...it's noisy either way), then the claim would be difficult to sustain. The Council would also need to be aware of the policy implications of denying a man his livelihood, and also that the work he does provides food and is a legal community benefit.