So, no, it is not applied to nearly half of the wheat that is grown.
There's also not a whole lot of evidence that it is widely applied to the mature plants prior to harvest.
edit: This is poor phrasing: "only applied to 45% of the acres for one of them". The table does not claim to be comprehensive. So a better statement would say something like: the table only lists glyphosate being applied to 45% of one of the types.
Durum is only a small fraction of wheat grown in the US:
Durum wheat, accounting for 3-5 percent of total production
http://www.ers.usda.gov/topics/crops/wheat/background.aspx
So, no, it is not applied to nearly half of the wheat that is grown.
There's also not a whole lot of evidence that it is widely applied to the mature plants prior to harvest.
edit: This is poor phrasing: "only applied to 45% of the acres for one of them". The table does not claim to be comprehensive. So a better statement would say something like: the table only lists glyphosate being applied to 45% of one of the types.