Temporal dynamics of predatory nematodes in Guam reveal effective biological control of root knot

A newly published study from the University of Guam sheds light on a tiny but powerful ally in the soil and how it could help Guam farmers and growers protect their crops naturally. Published on Dec. 11, 2025, in the journal Frontiers in Plant Science, the study was conducted by Dr. Richard R. Singh, an assistant professor of sustainable plant production, and soil chemist Clancy Iyekar of the agInnovation Research Center. The study focuses on nematodes—microscopic roundworms in soil that are poorly documented in Guam—specifically exploring how certain "good" nematodes may help control the harmful ones that damage crops.