Selling pressure in overnight trading continued during the day session with November soybeans plunging as much as 22 cents to $9.555, finally filling the old chart gap beginning around $9.64 that dates back to early July. General Comments Soybean and corn prices were pressured in overnight trading by a line of light-to-moderate rain showers that were moving eastward through Iowa and southern Minnesota. It was a fresh reason to sell soybeans, especially for the longs. Overnight trading volume was active again. Ironically, the new weekly drought monitor showed a new spot of drought rated as severe in central Iowa even as the rains continued to fall this morning. The measured rain totals were fairly modest, ranging from about one-quarter to...