Sentence:  Contrary to the views of many of the backers of Pickering Bordeaux, we have found a three to one <WSD>Bordeaux</WSD> just as good a fungicide as a <WSD>Bordeaux</WSD> in which only just enough lime is used to throw down all of the copper as a precipitate. 
Meaning of the word marked with <WSD> tags:  A Bordeaux mixture.