The influence of chemical treatments application on the Ostrinia nubilalis Hbn. Attack to maize sowed in different epochs in the conditions of central Moldova

Abstract

The Ostrinia nubilalis Hbn. species it is one of the pests specific to the maize crop that produces production losses in terms of quality and quantity. At A.R.D.S. Secuieni, in 2019, researches were conducted regarding the application of chemical treatments to reduce the attack produced by the Ostrinia nubilalis Hbn. larvae to maize sown in different epochs. The results obtained regarding the influence of the interaction between the sowing epoch and the treatments applied on the vegetation on the attack produced by the european corn borer larvae indicated that regardless of the sowing epochs, the variant where it was applied cyantranyliprole had the lowest percentage of attacked plants. The influence of the interaction ofthe two factors (epoch and treatment) also materialized by reducing the average number of holes and larvae/plant, highlighting with the best results, the variants sown in the third epoch, where chemical treatments ensured a good protection of maize plants.