Sentence:  After the corn was planted, upon acre A, I spread broadcast one hundred bushels of lime, (cost $3) and fifty bushels of ashes, (cost $6.) ... The extra crop of the combination over the limed acre or <WSD>ashed</WSD>, was paid by the increased crop, ... 
Meaning of the word marked with <WSD> tags:  To cover newly-sown fields of crops with ashes.