Communities
Select a community to browse its collections.
Recent Submissions
Item
Evaluación del efecto de tres diferentes bioestimulantes (extracto de algas marinas, ácidos húmicos y ácidos fúlvicos) en el crecimiento de plantas de capulí (prunus serotina) Universidad Técnica de Cotopaxi, Campus Salache
(Universidad Técnica de Cotopaxi (UTC) Ciencias Agropecuarias y Recursos Naturales. Agronomía, 2026-10-26) Ganchala Tigmasa, Brayan Fabricio; Jácome Mogro, Emerson Javier
The objective of this study was to evaluate the effect of three biostimulants (seaweed extract, humic acids, and fulvic acids), applied at three different doses, on the growth of capulí (Prunus serotina) plants established at the Salache Campus of the Technical University of Cotopaxi. The research addressed the need to generate technical information on management alternatives that contribute to the initial development of this forest and fruit species, which is important for the Andean region of Ecuador. A completely randomized block design with a 3 × 3 factorial arrangement and three replications was used, evaluating nine treatments corresponding to the combination of biostimulants and application rates. The variables analyzed were plant height, number of shoots, and cost-benefit ratio. The data obtained were subjected to analysis of variance and comparison of means using Tukey’s test at a 5% significance level, using InfoStat software. The results showed that, for the height variable, there were no statistically significant differences among treatments during the evaluations conducted at 0, 15, 30, and 45 days (p > 0.05). For the number of shoots variable, significant differences were observed only between biostimulants at 15 days, while no statistically significant differences were detected in subsequent evaluations. Although some treatments showed higher average growth rates, these did not represent significant advantages over the others. In the cost-benefit analysis, treatment T2 (seaweed extract + 2 ml/l) had the most favorable value (B/C = 1.57), while treatment T9 (fulvic acids + 4 ml/l) had the lowest cost-effectiveness (B/C = 0.95). It is concluded that, under the conditions in which the trial was conducted, the biostimulants evaluated did not significantly alter the growth of capulí during the experimental period; therefore, it is recommended to conduct longer-term evaluations under different agronomic management conditions.
Item
Análisis de vulnerabilidad en la producción agrícola frente al cambio climático mediante la metodología CVCA, en la comunidad de Quinte Buena Esperanza, parroquia de Toacaso
(Universidad Técnica de Cotopaxi (UTC). Ciencias Agropecuarias y Recursos Naturales. Agronomía, 2026-10-26) Guanoluisa Guanoluisa, Jonathan Alexander; Sopalo Villegas, Jonathan Fabián; Ilbay Yup,, Mercy Lucila
The Climate Vulnerability and Capacity Analysis (CVCA) methodology emerged as a participatory research tool—essential for decision-making—to strengthen community resilience. The research aimed to analyze agricultural production vulnerability regarding climate change using the CVCA methodology in the community of Quinte Buena Esperanza, in the Toacaso parish. The study was conducted through seven workshops employing participatory diagnostic tools, such as risk maps, historical timelines, seasonal calendars, daily activity clocks, household decision-making charts, Venn diagrams, and vulnerability matrices. Subsequently, the CVCA analysis was conducted, incorporating insights from key informant interviews. The CVCA results revealed critical climate risks, such as drought. Evidence also showed an excessive workload for women and limited autonomy in decision-making. However, valuable social capital was observed, supported by NGOs and public and private institutions (84.62%). Four strategies were defined to mitigate the effects of climate change and foster community adaptation to these threats. The first proposal focused on constructing roadside embankments and planting native vegetation. The second adaptation measure considered was the diversification of drought-resistant crops, such as quinoa. The third strategic action involved agroforestry, specifically implementing crops with low water requirements. The fourth solution involved incorporating earthworm humus and organic garlic-and-chili-based liquid fertilizers (biol) to improve soil quality and control pests ecologically. The CVCA methodology is effective for analyzing community vulnerability to climate change and generates evidence to plan adaptation strategies aimed at improving agricultural production and ensuring food security for Andean communities in Ecuador.
Item
Evaluacion de colectas de oca (oxalis tuberosa) y melloco (ullucus tuberosus), en Salache, Latacunga, Cotopaxi, 2025-2026
(Universidad Técnica de Cotopaxi (UTC) Ciencias Agropecuarias y Recursos Naturales. Agronomía, 2026-10-26) Molina de la Cruz, Ritha Felicidad; López Castillo, Guadalupe de las Mercedes
The objective of this research was to determine the characteristics of oca (Oxalis tuberosa) and ulluco (Ullucus tuberosus) accessions established at the Salache Campus of the Technical University of Cotopaxi. The study focused on the characterization and sustainable use of these Andean tuber crops. A quantitative and descriptive research approach was employed, using field techniques through the establishment of an experimental trial for the collection of phenological, morphological, and productive variables of the accessions. The data obtained were analyzed using descriptive statistics, cluster analysis, analysis of variance (ANOVA) of the cluster groups, Tukey’s test at the 5% significance level, and mean comparison, allowing the identification of the existing variability among the evaluated materials.The results for oca (Oxalis tuberosa) identified four cluster groups. The analysis of variance revealed significant differences in several agronomic variables. According to Tukey’s test, Cluster 4, which included the largest number of accessions, belonged to significance group A and showed average values of 15 days to sprouting, plant height of 6.52 cm, two stems per plant, stem diameter of 1.11 mm, and 20 leaves per plant.For ulluco (Ullucus tuberosus), significance ranges were also established for the evaluated variables. Cluster 4, which grouped the highest number of accessions, presented the highest values within significance group A for leaf diameter (4.07 cm), days to flowering (98.8), flower size (0.46 cm), and tuber weight (27.96 g), indicating materials with greater vegetative development and higher tuber yield.The findings of this study provide a scientific contribution to the characterization of the germplasm of oca (Oxalis tuberosa) and ulluco (Ullucus tuberosus), strengthening strategies for the conservation of plant genetic resources, the sustainable use of genetic diversity, and the development of future research aimed at the sustainable management of Andean crops in Ecuador.
Item
Evaluación del efecto de tres fungicidas sobre la inhibición, incidencia y severidad de botrytis (botrytis spp.) en rosa (rosa spp.) variedad vendela bajo condiciones de laboratorio.
(Universidad Técnica de Cotopaxi (UTC) Ciencias Agropecuarias y Recursos Naturales. Agronomía, 2026-10-23) De La Cruz Chorlango, Julio César; Toapanta Gallegos, Diana Elizabeth
Flower cultivation is an important industry for the Ecuadorian economy, and the production of roses for export depends on the proper management of diseases that affect flower buds. In this context, the objective of this study was to evaluate the effect of the fungicides Thiram + Carboxin, Procymidone, and Chlorothalonil—applied at different concentrations—on the inhibition of mycelial growth, as well as the incidence and severity of Botrytis spp. in the Vendela rose variety under laboratory conditions. The study was conducted at the Plant Microbiology Laboratory of the Technical University of Cotopaxi, Salache campus, using a completely randomized design and two experimental phases. In the first phase, the pathogen was isolated from symptomatic flower buds, and an in vitro assay was conducted on PDA medium using a factorial design with three fungicides and four concentrations: 0.01, 0.10, 1.00, and 10.00 mg/mL, with five replicates, for a total of 60 experimental units. In the second phase, treated and inoculated flower buds were evaluated, using the same three fungicides, the four concentrations mentioned above, and a 0 mg/mL control, with three replicates and 45 experimental units. The data were analyzed using analysis of variance (ANOVA) and Tukey’s test at the 5% level. The results showed that Thiram + Carboxin achieved 100% mycelial inhibition at 1.00 and 10.00 mg/ml, and 98.92% at 0.10 mg/ml. In flower buds, it showed the lowest incidence, at 75% at 0.10 and 1.00 mg/mL, and the lowest severity, at 18.75% and 22.92% at 1.00 and 10.00 mg/mL, respectively. It is concluded that Thiram + Carboxin was the most effective treatment for reducing the growth and damage caused by Botrytis spp. under laboratory conditions.
Item
Evaluación del efecto de tres fungicidas sobre la inhibición, incidencia y severidad de botrytis (botrytis spp.) en rosa (rosa spp.) variedad explorer bajo condiciones de laboratorio
(Universidad Técnica de Cotopaxi (UTC) Ciencias Agropecuarias y Recursos Naturales. Agronomía, 2026-10-23) Chorlango Cuascota, Carlos Josue; Toapanta Gallegos, Diana Elizabeth
The production of roses for export can be affected by Botrytis, as this pathogen degrades the quality of the flower buds and reduces their commercial value. The research was conducted at the Plant Microbiology Laboratory of the Faculty of Agricultural Sciences and Natural Resources at the Technical University of Cotopaxi, Salache campus, with the objective of evaluating the effect of three fungicides at different concentrations on the inhibition of mycelial growth, the incidence, and the severity of Botrytis in the Explorer rose variety. A quantitative, experimental approach with a descriptive scope was applied, using a completely randomized design with a 3 × 5 factorial arrangement. Tebuconazole, Iminoctadine, and Prochloraz were evaluated at concentrations of 0; 0.01; 0.1; 1; and 10 mg/mL. The in vitro trial comprised 15 treatments, five replicates, and 75 experimental units; while the trial on flower buds included 15 treatments, three replicates, and 45 experimental units, each consisting of four buds. The variables analyzed were mycelial growth, percentage of inhibition on day 8, incidence, and severity. The data were analyzed using analysis of variance (ANOVA) and Tukey’s test at the 5% significance level. Statistical analysis revealed significant effects of the fungicide, concentration, and their interaction on the evaluated variables. Tebuconazole achieved 100% inhibition at 0.1, 1, and 10 mg/mL, and Prochloraz achieved between 99% and 100% inhibition at all concentrations. Iminoctadine showed a progressive response ranging from 54.46% to 83.84%. In flower buds, tebuconazole performed best; at 10 mg/mL, it recorded a 25% incidence and 6.25% severity. In contrast, Prochloraz maintained a 100% incidence despite its high in vitro inhibition. It is concluded that Tebuconazole was the fungicide with the most consistent response in both experimental phases.