Last week was a busy one as many food-related stocks increased dividends. For example, packaged food conglomerate ConAgra Foods, Inc. ( CAG) boosted its dividend 5.6% and Rocky Mountain Chocolate Factory, Inc. ( RMCF) increased its dividend by 5.3%, and neither of them made it to the top 10 in terms of percentage increase of quarterly payments.Stockpickr.com scrutinized all the dividend raisers for last week and came up with the stocks with the biggest dividend increase. At the top of the list was another food company, Diamond Foods, Inc. ( DMND). The processor and marketer of nuts and snack foods raised its dividend by 50% to $0.045 per share. On Sept. 21, the stock was upgraded by BB&T Capital Markets from a Hold to a Buy. The stock has a price to earnings ratio of 38 and its price earnings to growth ratio is 1.5. The yield is 0.9%. Diamond is part of the Stockpickr portfolio called the Most Probable Major Advertises During Super Bowl XLI, which is a portfolio of the companies expected to be the biggest advertisers in Super Bowl 41. As it turned out, Diamond did have an Emerald Nuts television advertisement. A couple of other stocks in the portfolio that also ran super bowl commercials included Anheuser-Busch Companies Inc. ( BUD) and FedEx ( FDX).