Unidad Posgrado Facultad Ingeniería Agronómica

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Subject: search.filters.subject.FERTIRRIEGO

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    Efecto de 3 soluciones nutritivas en el cultivo de tomate (Lycopersicum esculententum Mill.), variedad Miramar injerto en briomino, bajo invernadero
    (2024-11) Riofrío Moreano Víctor Paúl; Marco Oswaldo Pérez Salinas
    The objective of this research was to evaluate the effect of three fertigation nutrient solutions on the yield of tomato crops (Lycopersicum esculentum Mill.), var. Miramar graft in briomino, under a greenhouse, in the San Pedro del Quinto sector, Chambo canton, province of Chimborazo. The nutrient solutions were formulated based on a previous soil analysis and a standard solution of H, P, K, Ca, Mg which was increased by 25% and decreased by 25%; in addition to a control to which no fertigation was applied but only foliar fertilization with applications in the same weeks as the rest of the treatments. For the statistical analysis of the variables: plant height, number of fruits per cluster, weight, diameter and color of the fruit and yield, a completely randomized block design (DBCA) with three repetitions was used.Based on the results obtained, it was concluded that nutrient solution 2 generated a higher yield of the tomato crop, followed by nutrient solution 3, both located in range A, according to the Tukey test at 5%. In addition, it was determined that both nutrient solution 2 and nutrient solution 3 obtained the best results when evaluating the number of fruits, weight, diameter and color of the fruit. Finally, it was determined that nutrient solution 2 was the treatment that obtained the highest net benefit and the highest marginal return rate (MRR), being the most economical treatment and the highest yield.
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    Análisis de extracto de savia para determinar el estado nutricional del cultivo de rosa
    (2023-02) Miranda Guevara, Carla Jasmin; Lindao Córdova, Víctor Alberto
    The present research work seeks to determine the nutritional levels of the rose bush by means of rapid measurement equipment in situ, in order to recommend and evaluate the efficiency of fertigation. For the measurements of the nutrient content in the sap, vegetative stems were used in the rice state, monitoring the collection temperature of the samples at 15 °C, 10 stems were cut for each repetition, defoliating and measuring 10 cm of the stem, they were crushed. the pieces of stems and the sap was extracted by means of a syringe, these samples were placed in the Horiba sensors for analysis. The nutrient solutions of the soil were extracted from the suction lysimeter or sucker, by means of an emptying of the sucker and they were placed in the horiba sensors for their respective analysis. It was found that the higher the temperature and radiation, the higher the absorption of the elements at the sap level, likewise, the lower these parameters are, the lower the absorption at the sap level. In the case of the sucker analysis, the higher the temperature, the nutrient content in the solution will be higher, because evapotranspiration allows a greater flow of masses and movement of the elements contained in the soil, otherwise it occurs when the temperature and radiation are less. Therefore, it is determined that the use of the Horiba meters allows a quick and efficient assessment of the absorption of nutrients in the cultivation of the rose.
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    Evaluación de tres láminas y dos frecuencias de fertirriego, aplicadas por el método de goteo localizado en el cultivo de fresa (Fragaria vesca) en la provincia de Tungurahua
    (2012-04-30) Solís Acosta, Myriam Fernanda; Gutiérrez Albán, Alberto
    En el cultivo de fresa se desconoce la lámina de agua y la frecuencia de riego adecuadas para la aplicación al cultivo, lo que ocasiona disminuciones significativas en la producción y productividad del cultivo, esto también puede deberse a diversos factores, uno de los cuales es la deficiente nutrición de la planta, mal manejo del cultivo, falta de o exceso de riego por lo cual es de importancia suplir esta deficiencia. El ensayo se efectúo en la provincia de Tungurahua, cantón Ambato, parroquia de Huachi Grande, en el Barrio Sagrado Corazón de Jesús, cuyas coordenadas geográficas son 1º 19´0,65”de latitud Sur y 78º 38´52”de longitud Oeste, a la altitud de 2 700 msnm, con el propósito de: evaluar tres láminas de riego calculadas en base a parámetros de suelo (L1 125%, L2 100%, L3 75%) y dos frecuencias de riego (F1 cada 24h, F2 cada 6h), aplicadas por el método de goteo localizado en el cultivo de fresa (Fragaria vesca) Var. Diamante. La aplicación del tratamiento F1L1, produjo los mejores resultados, al reportar un promedio semanal de 887 Kg/ha de fruta, seguido por el tratamiento F2L1 con 752 Kg/ha de fruta. En cuanto al ataque de enfermedades la lámina de riego L1 fue la que presento un mayor índice de enfermedades, seguido por L2 y L3. Del análisis económico se concluye que, el tratamiento F1L1 (Frecuencia de riego por goteo una vez por día y 125 % lámina de riego), reportó la mayor relación beneficio costo (1,88), en donde los beneficios fueron 0,88 veces lo invertido, siendo el tratamiento más rentable durante los seis meses que se evaluó el cultivo. La relación beneficio costo del tratamiento recomendado es de 1,32.