Evaluation of Two Entomopathogenic Nematodes Heterorhabditis bacteriophora (H. K. Poinar) and Steinernema carpocapsae (J. Weiser) Using Two Applications Methods for the Control of Spodoptera frugiperda (J.E. Smith) in Maize Production

One of the most critical pests that significantly threatens maize crops is Spodoptera frugiperda, which can cause up to 50% production losses. This experiment aimed to compare the efficacy of the entomopathogenic nematodes Heterorhabditis bacteriophora and Steinernema carpocapsae against the insecticide emamectin benzoate, applied using a DJI© Agras T10 spray drone and a conventional HIDRA PROTECNO 16 backpack sprayer for the control of S. frugiperda. The mortality of S. frugiperda larvae was evaluated 48 and 72 hours after application, and data were analyzed using SAS statistical analysis software version 9.4 4 through an analysis of variance (ANOVA) and Duncan´s new multiple range test for means comparisons. Results showed that at 72 hours post-application, there was a higher mortality of S. frugiperda across all treatments, with the chemical treatment applied by drone achieving the highest mortality at 90%, followed by 68% with the backpack sprayer. Nematode treatments with the backpack sprayer reached a mortality rate of 42% for S. carpocapsae and 36% for H. bacteriophora. In the drone applications, the nematode S. carpocapsae achieved 26% mortality, and H. bacteriophora had a 2% mortality rate.

Descripción

Fitotecnia

Palabras clave

Backpack sprayer, drone, effectiveness, mortality

URI

https://hdl.handle.net/11036/7957

Colecciones

Ciencia y Producción Agropecuaria

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