Akademik Veri Yönetim Sistemi
Crop Protection, cilt.205, 2026 (SCI-Expanded, Scopus)
Root-knot nematodes (RKNs-Meloidogyne incognita) pose a significant threat to global agriculture, particularly in high-value crops like tomatoes. RKNs can cause yield losses ranging from 25% to 100% by inducing root galling and impairing nutrient and water uptake. The move towards sustainable pest management, driven by regulations like the European Directive 2009/128/EC, necessitates the evaluation of existing systemic chemicals for their potential against these subterranean pests. This study investigated foliar efficacy of fluopyram and spirotetramat against M. incognita, evaluating dose-response relationships (recommended to 40× ) and application timings (1, 7, 14, 21 days post-inoculation) using regression modeling and correlation analysis.Fluopyram demonstrated comprehensive dual-stage control with ED50 of 3.2× (egg masses) and 5.36× (galls), indicating rapid dose-dependent efficacy. At practical doses, >80% reduction is anticipated; maximum testing (40× ) achieved 91.53% gall and 93.86% egg mass reduction. Strong correlation (r = 0.92) indicated synchronized suppression across nematode life cycle.Spirotetramat showed specialization: exceptional reproduction control (89.73% at 2× ; ED50 = 0.52× ) versus limited gall efficacy (ED50 = 202.07× ; r = −0.1). This decoupling stems from lipid biosynthesis inhibition disrupting fecundity without preventing J2 feeding site establishment. Repeated applications (planting plus 7 days) achieved 95.64% reproduction suppression (R2 = 0.832).Fluopyram emerges as the superior option for comprehensive life-stage control with mechanistic consistency. Spirotetramat serves as a specialized reproduction disruptor requiring optimized timing. Fluopyram integration into pest management provides superior RKN protection and simultaneous aerial pest control.