Efecto de la aplicación de dos ingredientes activos, para el control químico de trips (Frankliniella occidentalis P.), en cuatro variedades de clavel (Dianthus caryophyllus L.), en cultivo establecido en invernadero.

Abstract

The objective of this research was to evaluate the effect of the application of two active ingredients for the chemical control of Thrips (Frankliniella occidentalis P.) on four varieties of carnation (Dianthus caryophyllus L.) in greenhouse crops. It was carried out in the Riobamba canton, in the greenhouse of the Horticulture Department of the Natural Resources Faculty at the ESPOCH. The research lasted 120 days of fieldwork; the studied parameters as; temperature and relative humidity with the help of a hygrothermometer expressed in °C and %, incidence percentage, product efficacy, phytotoxicity, and economic analysis applying the B/C ratio. A study was carried out using a bifactorial completely randomized block design (CBAB), with (2 insecticides, x 4 varieties) with three replicates and doses of 0.5 cc/lt for each one, using the application by the nebulization method. The results for the lowest percentage of thrips incidence at 15 and 30 days before application showed the insecticide Trueke with 36.67%, 38.33%, and 15 days before applying the interaction Navidad x Trueke obtained 26.67%. At 2,1 and 32 days after application, the Trueke insecticide showed 35.00%, 25.00%, and 21.67%, respectively. The highest percentage of efficacy was found in the Olimpia Orange variety with 41.47%; the lowest values of phytotoxicity damage 24 hours after each application were obtained with the insecticide Evisect. It was concluded that the highest B/C ratio was the V2P1 treatment (10ST120 x Trueke) at $2.85, with profitability of 184.65%. It is recommended to apply Trueke insecticide to combat thrips, which obtained the highest percentage of efficacy and did not cause phytotoxicity.