How the economy and consumers react to the coronavirus will be important to the food and agriculture sector. A large economic decline like the Great Recession beginning in September 2008 caused the stock market to continue losing money until March of 2009. That means that any single day’s increase in the stock market is not indicative of a bottom.  Wall Street Journal writers Greg Ip, Danny Dougherty and Anthony DeBarros point out that there is no historical precedent for the current intentional self-shutdown of an economy. They note that the closest is the 2003 SARS epidemic in Hong Kong. The Special Administrative Region shut down in a fashion similar to what is happening now with the coronavirus. Schools, restaurants, shops a...