Evaluación del efecto de algas de diatomeas en cuatro dosis para el control de áfidos (Brevicoryne brassicae) en dos variedades de brócoli ( Brassica oleracea) en el sector de Machachi, Cantón Mejía, Provincia de Pichincha en el año 2022.

The present investigation was carried out in the Chanizas neighborhood, Machachi Parish of the Mejía Canton, Pichincha Province, at an altitude of 2,886 meters above sea level and coordinates latitude 0° South and longitude 75° West. The objective was to determine the effect of diatom algae on aphids (Brevicoryne brassicae) of four doses of diatom algae on two varieties of broccoli (Brassica oleracea var. Avenger & Steell). A complete randomized complete block design was implemented with a 4 x 2 factorial arrangement, giving a total of 10 treatments and 3 repetitions. Same Experiment that was carried out in the field, the pre-sowing tasks were plowing and furrowing the field to later place the seedlings purchased in the Salcedo sector. The indicators to evaluate were: height of the plants (PA), percentage of incidence (PI), and number of leaves (NH). The following results were obtained: The treatment with the highest incidence of pests is T10 (Stell) with an average of 34.67%. The broccoli with the lowest percentage of pest incidence is T4 (Stell 25g/lt) with an average percentage of 13.33%, ranking in the last range (B); It should be noted that the treatments T7 (Avenger 45g/lt), T8 (Stell 45g/lt), T2 (Stell 15g/lt) and T3 (TAvenger 25g/lt) have an incidence rate equal to 20%. In cost, the T7 treatment was the one that gave the best results. therefore, it is recommended to use 25g/lt for control as an alternative to chemical control. Keywords: B brassicae, Broccoli, diatom algae, dose, frequency.

• Үндсэн зохиолч: Heredia Noroña, Cesar Andrés (author)
• Формат: bachelorThesis
• Хэл сонгох: spa
• Хэвлэсэн: 2022
• Нөхцлүүд: BRÓCOLI; DOSIS; ALGAS DE DIATOMEAS; AGRONOMÍA
• Онлайн хандалт: http://repositorio.utc.edu.ec/handle/27000/9472