Resumo

LEON-GARCIA, Imelda; RODRIGUEZ-LEYVA, Esteban; ORTEGA-ARENAS, Laura D.  e  SOLIS-AGUILAR, Juan F.. Insecticide susceptibility of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) associated with turfgrass at Quintana Roo, México. Agrociencia [online]. 2012, vol.46, n.3, pp.279-287. ISSN 2521-9766.

The fall armyworm Spodoptera frugiperda is one of the major pests that attacks corn (Zea mays L.) and turfgrass (Paspalum vaginatum Swartz, Cynodon dactylon (L.) Person) in the Southern USA, México, Central and South America. This pest causes damage to foliage and sometimes loss of sections of the golf carpet, and it is controlled by insecticides. The objective of this research was to determine susceptibility of S. frugiperda to insecticides commonly used in golf courses in Quintana Roo, México, to generate bases for a management program. Susceptibility to lambda-cyhalothrin, deltamethrin, cyfluthrin and methomyl was evaluated by topical application on the prothorax of third instar larvae. Mortality was recorded 24 h after applying the insecticides and the log dose response line probit and the LD₅₀ and LD₉₅ values were determined. Spodoptera frugiperda population of the course Iberostar Playa Paraíso Golf Club (20° 45' 41'' N, 86° 57' 59'' W; 3 m altitude) at the Riviera Maya, Quintana Roo, showed high resistance to insecticides deltamethrin (1102.2x), lambda-cyhalothrin (204.5x), cyfluthrin (162.7x) and methomyl (183.0x).

Palavras-chave : golf courses; Paspalum vaginatum; Cynodon dactylon; Spodoptera frugiperda; resistance.

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