Tesis Agronomía
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Item Evaluación de dos hormonas en la producción de forraje verde hidropónico en Soya (Glycine max)(2025-02) Pico Fiallos Mariana Abigail; León Gordon Olguer AlfredoThe objective of the study was to evaluate the impact of two plant hormones, gibberellins and cytokinins, at different doses, on the production and nutritional content of hydroponic green forage (FVH) of soybean (Glycine max). An experimental design with five treatments (two hormones at four doses and a control) with three replications was used, measuring variables such as root mat height, plant height, fresh weight, dry matter, protein and fiber content. The hormones were applied at different doses (T1 of 0.05 g/L and T2 of 0.1 g/L (gibberellins) and T3 of 2.5 cc/L and T4 of 3.75 cc/L (cytokinins). The research showed that the application of gibberellins and cytokinins significantly improved plant growth (root mat height and plant height), but no significant differences were observed in the fresh weight of biomass. The conclusions of the study indicate that hormones are effective tools to improve the development and yield of FVH, especially in fresh weight and fiber content, although their impact on protein content should be further investigated because the protein percentage increases or decreases depending on the days the crop is old. It is recommended to prioritize the use of adequate doses according to the specific objectives, either to maximize biomass or to enrich specific characteristics such as fiber. Likewise, complementary studies are necessary to optimize the balance between quantity and nutritional quality in FVH. This research provides valuable information for small and medium-sized producers interested in improving FVH productivity in a sustainable and efficient manner.Item Evaluación bromatológica de Forraje Verde Hidropónico en dos variedades de Maíz (Zea mays), y Vicia (Vicia sativa)(2024-08) Camino Grijalva, César Alexander; León Gordon, Olguer AlfredoHydroponic green fodder (HGF) emerges as a sustainable alternative for the production of feed for cattle in arid and semi-arid areas. The demand for agricultural products has driven the introduction of agriculture and livestock in these fragile areas, which can cause environmental degradation. HGF is grown in an environment free of chemicals and growth promoters, using viable seeds and a soil-less method. Corn and vetch are two of the best crops for HGF. Hydroponic systems adapt to the local climate, allowing the cultivation of specific species and ensuring a constant supply of nutrient-rich feed for livestock. The objective of this research was to bromatologically evaluate hydroponic green fodder of corn and vetch. The performance of hydroponic production of the fodders was determined. The test was carried out in the Bellavista neighborhood, Ambato canton, Tungurahua province. Therefore, the global positioning system (GPS) is located at an altitude of 2650 meters above sea level and in geographic coordinates: Latitude 1 ° 14′56 "South and longitude 78 ° 37′00" West. A design (BCA) with a 2x2 factorial arrangement with 3 repetitions was applied and the Tukey test was performed at 5%. The results obtained from the bromatological evaluation show that the common vetch variety species with the FVHB1 treatment reported a higher percentage of crude protein, dry matter and ash. On the other hand, with a higher percentage of ether extract, the yellow corn variety species with the FVHA1 treatment, likewise the FVHB2 treatment reported a higher percentage of crude fiber. The performance of hydroponic forage production. Common vetch (FVHB1) has a higher yield in the variable plant height with 29.33 cm as well as the variable root length with the FVHA2 treatment of 7.00 cm while, the highest yield in the variable final weight of the forage was the FVHA2 treatment with 3.60 kg which makes it a more attractive option for large-scale hydroponic production. KeywordsItem Evaluación de la producción de forraje verde hidropónico de cebada (Hordeum vulgare L.) con nutrición mineral(2024-02) Gavilanes Pérez, Abraham Ezequiel; León Gordon, Olguer AlfredoProduction of hydroponic forage is a relevant technology for obtaining high-quality forage in a short time. In the case of barley, it represents the fourth most cultivated cereal in the world, which makes it very important for global agriculture. The objective of this research was to determine the performance of hydroponic green barley (Hordeum vulgare L.) forage under two nutrient solutions. Each nutrient solution varied in the content of nutrients such as N, P, K, other secondary macro elements (Mg, S and Ca) and microelements. Was evaluated the effect on plant height, fresh weight and dry root and aerial part, incidence of contaminants and yield in fresh weight of the shoot were evaluated. The solution A, with the highest nutrient content (N: 147ppm, P: 76ppm, K: 225ppm Ca: 120ppm) produced the highest plant height (19.1 cm), mat thickness was also achieved. root (5.8 cm), fresh and dry weight of the aerial part (60.9 and 24.9 g, respectively) and fresh and dry weight of the root mat (147.7 and 77.3 g, respectively) and, finally, higher yield (13.9 kg/m2). There was no effect of the nutrient solution on the number of leaves, quality of the root mat, incidence of contaminants and days to harvest. This type of technology is little known in the country, however, given the high quality of the forage obtained hydroponically, it is suggested that socialization campaigns be carried out among producers in the region to show the feasibility of its production. Keywords: barley, green fodder, hydroponics