The use of ecological fertilizers is essential to promote sustainable agricultural production. This study evaluated the effect of an ecological biostimulant on the growth and productivity of pepper (Capsicum annuum) under protected cultivation conditions. The experiment was conducted between March and May 2022 in greenhouses of the Agroindustrial Company "Enrique Troncoso" (Pinar del R & iacute;o, Cuba). Treatments with foliar and soil application of the biostimulant were compared against a control. All treatments, including the control, received conventional fertigation. The biostimulant was applied at 35, 42, and 49 days after transplanting, with vegetative growth assessed by measuring stem length and diameter, and counting the number of leaves per plant. Starting on day 69, production was quantified over three consecutive harvests, recording the number of fruits per plant, their length, fresh weight, and yield. The results showed that complementary fertilization with the ecological biostimulant significantly stimulated the growth and productivity of pepper, with a 40% increase in yield compared to conventional fertigation. Additionally, it was observed that soil applications promoted a better nutritional balance in the plants. This result supports the potential of the biostimulant used as an ecological alternative to improve the nutrition and productivity of pepper cultivation in protected systems.
This research aimed to improve the training process for part-time professors at the Military University Branch, taking into account that current circumstances require more highly trained and specialized personnel to perform their duties, ensuring that tasks are completed with the required quality. In this sense, there is a contradiction between need and reality because teachers face difficulties in teaching, and staff equipped with the tools to achieve training in the services they provide are needed, taking into account the specific characteristics of the institution. The objective was to design and validate a strategy for preparing part-time teachers at the Military University Branch. Surveys and interviews were conducted with the entire sample, along with observation and descriptive statistics, which allowed for a diagnostic assessment of the research. A strategy was designed and three programs were implemented based on staff preparation. Exchange workshops were held, and the Delphy method was applied to validate the results. This reaffirmed the foundation of the strategy for preparing part-time teachers at the Military University Branch, demonstrated its effectiveness, and raised the level of professionalism, impacting grades and retention. Today, it is a tool for achieving the established objectives.
This study was conducted in La Coloma cove, which covers an area of 1194.42 ha. The objective was to calculate the areas of degraded mangrove forest in order to propose their restoration. Optical satellite images from Sentinel 2 and QGIS 3.38 software were used, different vegetation indices were calculated and supervised classification was performed for land use updating, which allowed obtaining the cover values and calculating the annual rate of change. The results show that 403.51 ha (33%) of the total are in a state of degradation. This indicates a partial loss of canopy structure, biomass and vigor that correspond to areas with tree mortality, severe loss of cover or conversion to bare or saline soils. Rhizophora mangle and Avicennia germinans were selected as suitable species for the reforestation proposal.
The emergence of generative Artificial Intelligence represents a turning point for the academic level, demanding a reevaluation of established pedagogical and ethical paradigms. This paper presents a systematic review of the emerging literature on the large language model DeepSeek, analyzing its potential for integration into the academic ecosystem. Through an analysis of technical reports, pre-prints, and policy documents published in 2024, the documented opportunities, challenges, and governance strategies are synthesized. The thematic analysis identified five main axes: (1) Distinctive technical foundations of DeepSeek; (2) Innovative academic applications; (3) Impact on student competencies and perceptions; (4) Ethical and academic integrity challenges; and (5) Institutional governance strategies. The discussion reveals a fundamental tension between the promise of hyper-personalized learning and the risk of undermining intellectual autonomy and academic integrity. It is concluded that the literature converges on the urgent need for a "responsible integration" approach, anchored in robust ethical policies, a pedagogic redesign focused on authentic assessment, and an institutional commitment to AI literacy for the entire university community. Significant research gaps are identified, such as the scarcity of longitudinal studies, suggesting directions for future research. .
Crop simulation models based on ecophysiological process and mechanisms contribute to the comprehensive analysis of yield, based on soil-plant-atmosphere-management interactions. For this reason, this work was carried out at the National Institute of Agricultural Sciences with the objective of determining the genetic coefficients of a hybrid corn, at different population density, for future use in a simulation model. An experiment was conducted in the dry season, with destructive sampling. Data on physiological variables and growth index, duration and heat units per phenological phase, and agronomic variables were collected. A simple classification analysis of variance was performed with Duncan's Multiple Range Test at 95 % probability. In conclusion, it was obtained information of 13 genetic coefficients of a hybrid corn, in two specific population densities.
