Alva Review-Courier -

LITTLE ROCK, Ark. (AP) — A major agribusiness company sued Arkansas regulators on Friday for banning its version of an herbicide that's drawn complaints from farmers across several states who say the weed killer has drifted onto their crops and caused widespread damage.

Monsanto asked a state judge to block the Arkansas Plant Board from enforcing a rule it adopted last year that prevents its dicamba product from being used each year from April 15 through September 15.

Dicamba has been around for decades, but problems arose over the past couple of years as farmers began to use it on soybean and...