The farmer has gone off for the afternoon to finish his 'muck-spreading' activities; there is a gentle rain falling at the moment which will help it to soak into the ground and then, with any luck, the fields will 'green up' again and second crop silage will begin to grow.
Last year was a good year for indoor feeding of cattle so many farmers have silage left from then. Some years, when the weather is really bad, most of them run out and everyone is scouring all the farms for bits to buy here and there. This year some farmers won't even make second crop but let their cattle eat the grass off.
All a far cry from the old days when there was only one crop a year and that was hay - and that depended so much on the weather - the right amount of rain to make the grass grow, the right amount of sun to ripen the grass, and then fine weather (of the right kind - no heavy night time dews) to dry the laying grass and make it right for hay. Then the chore of piling it into the hay carts and pulling it back to the farm (I remember riding on top of hay when I was a child) and making a good, strong stack.
Like our grand mothers would not believe the ease of washingday these days so our farmer grandfathers would not credit modern facilities. Here is a very poor photograph of the farmer and his father 'haymaking' around 1945 - sorry it's not a better photograph.