The effect of Pyrethrum and Bacillus thuringiensis against Ricania simulans (Walker, 1851) (Hemiptera:ricanidae) in Turkey

Abstract

Abstract In this study conducted for the purpose of determining the efficiencies of alternative biopesticides to be used in the struggle against Ricania simulans, the pest which feeds on hundreds of products by absorbing their juice saps as well as posing danger in the coastal parts of the Eastern Black Sea Region of Turkey. The bio pesticides referred to as Pyrethrum (Spruzit Neu) and Bacillus thuringiensis (Dipel DF) were used. During the summer months of 2015, the period when nymphs and adults are found profoundly in the city of Artvin. Practices by means of pesticides in different doses were performed on the nymphs and adults of R. simulans, and the results were evaluated according to One-Way Variance Analysis and Duncan Test. It was determined that the most effective practices for nymphs would be through the use of 100 gr/100lt Bacillus thuringiensis (Dipel DF), 300 gr/100 lt Dipel DF and 500 gr/100 lt Dipel DF, whereas the most effective practices for adults would be through the use of 600ml/100 lt Pyrethrum (Spruzit Neu) and 500gr/100 lt Difel DF. The most commonly-seen efficiency rates were determined to be 92.5% with 600ml/100 lt dose of Pyrethrum and 99% with 500gr/100 lt dose of Dipel DF. The impact rate of the biopesticides performed against the adults, on the other hand, was found to be 96% with 600 ml/100 lt dose of Pyrethrum and 93% with 500gr/100 lt dose of Dipel DF. Consequently, both of the bio pesticides used were determined to have been effective on both the nymph and the adolescent of R. simulans; yet, it was concluded that the struggle in question would be more appropriate during the period of nymphs.