Eficiencia de la aplicación de aceite ozonificado en la nutrición del Delphinium sp. en la parroquia Montalvo

Abstract

In Ecuador the cultivation of Delphinium has gained in acceptance, as well as the use of ozonated oils to reduce damage caused by pests. Developing experiences that allow determining the effect of ozonized products on the health of Delphinium varieties could create new opportunities for organic management in the flower market with greater care for the health of producers and caring for the environment. The objective of this work was to evaluate combinations of doses of Agrozoil and varieties of Delphinium spp. on the production index, physiological response and profitability in the Montalvo parish. To comply with the experimental stage, a randomized complete block design was used with the following specifications: 3 doses of ozonized oil combined with 5 varieties of Delphinium, 5 controls without Agrozoil and 3 repetitions for each treatment. The following variables were evaluated: harvest percentage, production index, time to harvest, plant height, stem diameter, leaf area and inflorescence height, as well as a greater number of flowers. The fresh mass and the dry mass in the root, stem, leaves and flowers were also determined. According to the results obtained, the highest percentage of harvest and production index was reached when 7 ml.L-1 of Agrozoil was applied in the Guinevere and Blue bird varieties. In the Galahat variety, the time to harvest was reduced by 20 days when using 5 and 7 ml.L-1 of Agrozoil. When 7 ml.L-1 of Agrozoil was applied in Astolat and Summer skies, a greater height and diameter of the stem was reached. Combining 7 mL.L-1 of Agrozoil in Summer skies increased stem height, stem diameter, leaf area, and inflorescence height as well as a greater number of flowers. When applying 5 mL.L-1 and 7 mL.L-1 of Agrozoil in the Galahat variety as well as 7 mL.L-1 of Agrozoil in the Guinevere variety, a greater number of leaves per plant was reached. The greatest fresh mass of the root was observed in Astolat without Agrozoil, while when using 3 ml of Agrozoil this variety reached the greatest fresh mass of the stem. The combination of 7 ml of Agrozoil in the Astolat, Galahat and Guinevere varieties as well as in Guinevere without Agrozoil had greater fresh mass in the leaves. With 7 ml of Agrozoil in Blue bird, greater dry matter was obtained in the root, while the application of 7 ml of Agrozoil in Astolat increased the dry matter in the stem and in the leaves. Finally, the spraying of 7 ml of Agrozoil in the Astolat and Blue bird varieties achieved a greater dry mass of the flowers. In accordance with the stated results, it was found that the Agrozoil product in some Delphinium varieties and with some doses of Agrozoil had a positive effect on the growth, development and reproductive phase, which lays the foundations for introducing Agrozoil within integrated management strategies in this flower crop.