Browsing by Author "Vaca Tubón, Jenny Magaly"

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    Aplicación foliar de calcio en el cultivo de fresa (Fragaria sp.) obtenido a partir de cáscara de huevo de gallina (Gallus gallus)
    (2019-04) Vaca Tubón, Jenny Magaly; Zurita Vasquez, José Hernán
    The research was carried out in Querochada Experimental Farm, of Agronomic Engineering School of Ambato Technical University, located in Cevallos canton, Tungurahua province, at 20 km south of Ambato distance, an altitude of 2850 msnm, with the purpose of: evaluating two doses of calcium obtained from chicken eggshells (Gallus gallus) (20% and 30%), plus two chelating agents (vermicompost and leonardite) in two doses 0, 5 ml and 1, 0 ml, in the strawberry crop (Fragaria sp). The completely randomized block experimental design (DBCA) was used, and the analysis of variance (ANOVA) was performed. Tukey tests at 5% and tests of minimum significant difference to differentiate between the factors under study. The treatments that received calcium application from eggshells, in the concentration of 30% (C2), reported higher percentage of calcium in the leaves, with 1,32% at 2 hours, 1,41% at 4 hours, 1,67% at 6 hours and 1,78% at 8 hours. They also reported a greater number of floral centers per plant (6, 42 centers) and leaves with greater firmness (1, 43 kg/cm2). In relation to chelators, the best results were achieved in the treatments applied with leonardite (Q2), with a higher percentage of calcium in the leaves, both at 2 hours (1, 27%) at 4 hours (1, 37%) and at 6 hours (1, 57%) and at 8 hours (1, 77%). Likewise, leonardite treatments increased the number of floral centers per plant (6, 28 centers). With respect to the chelating dose, with the application of the 1,0 ml dose (D2), the best results were obtained, reporting a higher percentage of calcium in the leaves at 2 hours (1,28%) at 4 hours (1, 1,38%)as well as at 6 hours (1,57%) and at 8 hours (1,80%).