Southern root-knot nematode disease, caused by Meloidogyne incognita, is a significant threat to sustainable cotton production worldwide. Common symptoms included root galling, stunted growth, and lower plant vigor and yield. This study evaluated the efficacy of nematicides (Velum in-furrow treatment and Copeo seed treatment) and cotton (Gossypium hirsutum) cultivars (standard, nematode-resistant, or with Thryvon technology) in managing root-knot nematode disease. The trial was conducted at a cooperating grower’s field naturally infested with root-knot nematode in Safford, AZ, in 2024. Findings highlight the potential of selecting resistant cotton cultivars and applying nematicide treatments to improve nematode management and yield under high nematode pressure.
Hu et al. (Thu,) studied this question.