It’s harvest time in South Louisiana for sugar cane and soy beans. Farmers in Arkansas are struggling with a menacing weed that is compromising the cotton crop. As noted in a previous column, “Pig Weed” is dominating many fields. Pesticide applications that originally controlled the weed are ineffective. Experts officially declared it uncontrollable as it chokes a million acres of cotton and soybeans. Some farmers have spent more than $500,000 fighting a plant that won’t die. Pig weed grows three inches per day and has a root structure the size of a baseball bat at its base. It not only kills crops but destroys the blades on combines and cotton pickers. Researchers believe they have developed a herbicide ready for delivery in six years.