Trawling OED for possible dialect words, they have 'clats', cow-dung - which seems to have been a useful product on farms, e.g. their example:
"1834 Brit. Husb. I. 27 'Clats..the dung of cattle as fuel..collected from the pastures at the close of summer' ".
(Weirdly, I had a Yorkshire friend who puzzled me once when she casually referred to something being 'as flat as a cow clart': I now understand what she meant.)
Re the 'pease ___', OED has a word which can be spelled 'eddish', 'etch' or 'eatage' meaning the stubble left after a crop had been reaped. It could have value as cattle fodder, or because other crops could be sown over the top and gain nutrients from it:"The bean etche well cleaned in the autumn and sown again with wheat".