Ciencias Agropecuarias

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Author: search.filters.author.Chango Chango, Christian AlonsoSubject: search.filters.subject.AJÍ (Capsicum annuum)

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    Manejo de gusano trozador (Agrotis ipsilon) en lechuga (Lactuca sativa L.), a partir de extractos de dos variedades de ají (Capsicum annuum)
    (2018) Chango Chango, Christian Alonso; Yánez, Wilfrido
    The investigation was made on Mr. Cristóbal Chango property, located in Picaihua parish, Ambato canton, Tungurahua province, whose coordinates are: 1º 16 "02" South latitude and 78º 34 "60" West length, of 2 657 altitude, with the purpose: evaluating chili pepper two 1extracts (Capsicum annuuum) (“rocoto and jalapeño”), in two 2concentrations (20% and 40%), to control chewing worm (Agrotis ípsilon), in lettuce (Lactuca sativa L.) cultivation. The treatments were four and witness. The completely randomized block design was used, in 2 x 2 + 1 factorial arrangement, with five replications. The variance analysis was performed, Tukey tests at 5% for treatments and interaction and 5% DMS tests for extracts and concentrations. The economic analysis was carried using BCR methodology. With jalapeño pepper extract application (E2), the best results were obtained, reporting a lower incidence rate at 15 days (11,25%), at 30 days (21,25%) and at 45 days (35,00%, as a lower percentage of severity at 15 days (13,82%), at 30 days (15,83%) and at 45 days (17,79%); greater diameter of the cabbage (16,09 cm) and the highest yields (33,33 kg/ha). With extracts application in 40% concentration (C2), good results were obtained with a lower percentage of incidence at 15 days (11,25%), at 30 days (21,25%) and at 45 days (34,38%); lower percentage of severity at 15 days (13,90%), at 30 days (15,92%) and at 45 days (17,92%). Major equatorial diameter (16,26 cm), reaching the highest yields (32,00 kg/ha). From an economic analysis it is concluded that, the treatment that was applied jalapeño pepper extract in concentration of 40% (E2C2), reached the highest benefit-cost ratio of 0,47, where the net benefits obtained were 0,47 times what was invested.