Abstract
An alternative for the population suppression of Spodoptera frugiperda is the use of toxic baits. The objective of this study was to evaluate the dietary preference and toxic effect of insecticides associated with the attractiveness of S. frugiperda adults as a pest management method. The following attractions were tested: 1) 5% sucrose solution, 2) 10% sugarcane syrup, 3) 10% honey, 4) 5% hydrolyzed protein, 5) Noctovi® 43sb, 6) Noctovi® OVI PLU 1-3, 7) Noctovi® OVI PHE/PAL 50-50 in the study with choice. Attractions: 1) sugarcane syrup 10%, 2) Noctovi® 43sb, 3) Noctovi® 43sb + sugarcane syrup 10%, 4) Noctovi® OVI PLU 1-3 in the study with no chance of choice. For the toxicity study, the food attraction associated with insecticides was used: methomyl 2%, lambda-cyhalothrin 1%, chlorpyriphos 2%, spinosad 1%, chlorantraniliprole 2% and chlorfenapyr 2%. The experimental design was the completely randomized design (CRD) with chance of choice, without chance of choice and toxicity. The following parameters were evaluated: number of insects that fed; time in minutes that remained in the attractive food and mortality. The molasses (10%) and Noctovi® 43sb food attractiveness were significantly more efficient in relation to feeding time and the highest number of landings was observed in the Noctovi® 43sb treatment, both in females and total adults. Methomyl, lambda-cyhalothrin and spinosad insecticides associated with food attractiveness are promising toxic baits for the management of S. frugiperda.
Highlights
The monitoring is the fundamental step in the implementation of an Integrated Pest Management (IPM) program
Considering the possibility of developing methods to control adults of S. frugiperda, this study aimed to evaluate the effect of food attractants and their association with insecticides on adults of this pest under laboratory conditions
The number of landings observed for males, females and total adults of fall armyworm was similar for all food attractants tested: sucrose, honeydew, honey, hydrolyzed protein, Noctovi® 43sb, Noctovi® OVI PLU 1-3 and Noctovi® OVI PHE/PAL
Summary
The monitoring is the fundamental step in the implementation of an Integrated Pest Management (IPM) program. Controlling the pest at the right time and with the right product can lead to money savings, make the target pest control program more efficient, and help preserve beneficial organisms on the farm. There are many methods of monitoring pest insects, one of which is by monitoring adult insects using appropriate traps. Such traps are considered useful tools in IPM if used correctly (Cruz et al, 2010). The fall armyworm Spodoptera frugiperda, (J.E. Smith, 1797) (Lepidoptera: Noctuidae) is the most important pest in maize cultivation, and because it is polyphagous, it uses several commonly occurring hosts in different agroecosystems. 1797) (Lepidoptera: Noctuidae) is the most important pest in maize cultivation, and because it is polyphagous, it uses several commonly occurring hosts in different agroecosystems. Casmuz et al (2010) reported the occurrence of this species in approximately 186 plant species belonging to 42 different families, in their distribution and occurrence zone
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