Rice Cultivation pre Civil War

I came across this reference to rice cultivation by African Americans slaves in South Carolina, while reading an article about the Air Force inadvertently dropping an atomic bomb on Mars Bluff, SC in 1958.  In 1993 historian Amelia Wallace Vernon wrote a book entitled African Americans at Mars Bluff, South Carolina.  The book "...documents the successful private cultivation of rice by slaves in Mars Bluff and their descendants into the twentieth century and develops persuasive evidence that the technical expertise to raise rice in South Carolina (and Louisiana) came from slaves brought over from middle Africa, where it was the staple crop".  This piece of history is noted in this article because the bomb that was dropped in 1958 landed  a few hundred yards from those rice fields of Pre-Civil War time.

(Source:  "Aircraft 53-1876A has lost a device" by Clark Rumrill.  American Heritage Magazine Sept 2000).