![Cotton roots infected with root-knot nematodes swell in response to the infection. These knots serve as feeding sites where nematodes (microscopic worms) grow, produce more eggs and stunt the plant's growth.](https://secure.caes.uga.edu/news/multimedia/images/1606/Nematodesoncottonlr.jpg)
Nematodes
Mother Nature’s freezing January temperatures reduced nematode buildup in southern Georgia fields. But warmer temperatures this spring could spark nematode activity, according to University of Georgia Cooperative Extension plant pathologist Bob Kemerait.