Browsing by Author "Perez Nuñez Emily Pamela"

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    Evaluación del ácido láurico en el control de oídio (Sphaerotheca pannosa) en el cultivo de rosas (Rosa spp.)
    (2025-02) Perez Nuñez Emily Pamela; Curay Quispe Segundo Euclides
    In this research work, the efficacy of lauric acid in controlling powdery mildew (Sphaerotheca pannosa) in rose crops (Rosa spp.) already established for 6 months, the Explorer variety, is evaluated. The test was carried out in the Querochaca Experimental Teaching Farm, which belongs to the Technical University of Ambato, located in the province of Tungurahua in the canton of Cevallos. The following doses of lauric acid were analyzed: 2.5 ml/L (D1); 5 ml/L (D2) and 7.5 ml/L (D3). The treatments were applied foliarly. The variables evaluated were incidence percentage, severity percentage, determination of nitrogen percentage in the foliage, quantification of chlorophyll in the leaves and determination of leaf color. For the execution of the test, a randomized complete block design (DBCA) was used, with a factorial arrangement of 2 x 3 + 2 with three repetitions, using the Tukey significance test at 5%. The percentage of severity was calculated with the free software ImageJ and the analysis of the levels of nitrogen and chlorophyll was done using the portable Chlorophyll Meter GYJ-B equipment. The results obtained showed that the most effective dose of Lauric Acid was 5 ml/L (D2) applied every 7 days, achieving a significant reduction in the incidence with a percentage of 7.33% and severity of the disease, with a percentage of 2.04% at 60 days of the evaluation. Likewise, the Tukey test at 5% of the determination of the percentage of nitrogen was not significant, in the quantification of chlorophyll an average value of chlorophyll of 2.78 SPAD was obtained. In addition, an economic analysis of the treatments was carried out, concluding that this strategy is not only effective but also viable. Based on the results, it is suggested that applications be made with a dose of 5ml / L (D2) Lauric Acid to obtain lower incidence and severity percentages.