Analysis of Ploughing Time

What is the matter with the landscape?
Familiar landmarks are not there.
Ploughed fields, like squares upon a chessboard,
Today are scattered everywhere.

The newly-harrowed vast expanses
So evenly are spread about,
As though the valley had been spring-cleaned
Or else the mountains flattened out.

And that same day, in one endeavour,
Outside the furrows every tree
Bursts into leaf, light-green and downy,
And stretches skyward, tall and free.

No speck of dust on the new maples,
And colours nowhere are as clean
As is the light-grey of the ploughland
And as the silver-birch's green.