Unidad Posgrado Facultad Ingeniería Agronómica

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    Producción de metano a partir de biomasa residual pecuaria enriquecida con desecho de cultivo de fresa (Fragaria ananassa) en la Universidad Técnica de Ambato, Facultad de Ciencias Agropecuarias
    (2020-10) Miranda Quitiaquez, Silvia Ximena; Muñoz Espinoza, Manolo Sebastián
    The objective of the research is to determine the production in vitro of biogas, methane and AGVs by adding strawberry residues in pig and sheep manure at different concentrations, the experiment was carried out in the Ruminology laboratories of the Faculty of Agricultural Sciences of the Technical University of Ambato, a completely randomized block design was applied, and the Tukey comparison test at 5% through the statistical system Infostat version 2019; the studied treatments were made with a standard raw material of pig herd manure , in combination with different proportions of fresh macerated strawberry and sheep flock manure as follows: T1 60% + 40% strawberry macerated; T2 Cerdaza 60% + 30% macerated strawberry + 10% sheep flock manure; T3 Cerdaza 60% + 20% macerated strawberry + 20% sheep flock manure; T4 Cerdaza 60% + 10% macerated strawberry + 30% sheep flock manure and T5 Cerdaza 60% + 40% sheep flock manure . The results observed in relation to the biogas production was higher (P = 0.0001) in the treatment T4 (201.2 mL / kg) and T5 (193.56 mL / kg), as well as the methane production was higher (P = 0.0001) in T4 (6.8 mL / kg) and T5 (7.0 mL / kg), referring about volatile fatty acids, a higher (P = 0.0001) production of acetic acid was observed in treatment T1 in relation to the other treatments. While for propionic acid the highest (P = 0.0001) production was observed in T3 and in butyric acid there weren't observed differences (P = 0.9807) between the evaluated treatments. Concluding that the strawberries was not decisive to increase the formation of biogas such as methane, however it was at the time of the formation of volatile fatty acids, which is verified as the best treatment T1 with the highest percentage of strawberry added to pig manure.
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    Efecto de la fertilización orgánica sobre la calidad nutricional de Lolium multiflorum (RYEGRASS) en el cantón Cevallos
    (2017) Garcés Pico, Santiago Fernando; Pérez Salinas, Marco Oswaldo
    The objective of this research was to evaluate the nutritional quality of Lolium multiflorum (RYEGRASS) , fertilized with different organic fertilizers. Using a male bovine of about 120 kg. ruminal degradation in situ MS was determined., using the technique of the nylon bag in the rumen and digestibility. The results show that T4 corresponding to treatment Blend fertilizer has a yield of forage biomass greater than the other treatments (1101.1 kg DM / ha), crude protein T4 treatment corresponding to treatment mix fertilizers has the higher value than the other treatments (12.9). Acid detergent fiber takes its highest value in the treatment T2 corresponding to treatment of chicken manure and has the value of (35.65). Contrary to the results of the acid detergent fiber, the fiber neutral detergent has the highest value treatment T1 corresponding to the control (70.23), the potential for Degradation Ruminal Dry Matter, has the highest value in the treatment T2 corresponding to treatment of chicken manure (76.7), indicating that the more organic fertilizer nitrogenous contributed to growing Ryegrass (Lolium multiflorum) the greater the amount of acid detergent fiber result in the ruminal debrability is faster and can include in the diet of bovines improving rumen functions and reducing GHG emissions. Descriptors: organic fertilizers, biomass, nutritional quality, ruminal degradation, digestibility, fertilization, fodder, hens, sheep, pastures.
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    Evaluación de tres abonos verdes, mezclas de leguminosa más gramínea, crucífera y amaranthaceae, en los suelos agrícolas degradados del cantón Bolívar
    (2016) Aguilar Aguilar, Manuel Eraclio; Villacís Aldaz, Luis Alfredo
    This research work was to identify the potential of herbaceous plant species (Domesticated and wild), in the production of biomass, the purpose of recovering degraded soils in the in the area of influence of the irrigation system Montúfar, canton Bolivar, Carchi province. Investigative plots were located the area of San Joaquin, parish Bolivar, located at 2510 meters above sea level. The treatments were: association of forage oat (Avena sativa, L., more Vicia (Vicia hajastana, C.); Wild Radish (Raphanus sativus, L.); Pigweed (Amaranthus dubius, L.); and the absolute control with weedy plants. Planting is done volley and the witness not sowed seeds were born propagated plants on the site. Design Randomized Complete Block (DBCA) with four treatments and three replications. The evaluated variables were subjected to deva and Tukey test at 5%; high significance in determining the variable dry matter production; the highest yield obtained treatment one 5.4 t/ha, the witness with wild turnip obtained 4.03 t/ha. The greatest contribution of green matter was obtained T1, 4,5t/ha followed by T2, 1,5t/ha. The largest increase in organic matter in the soil, 30 days built the green material was obtained with T4, with 1,4 % and T3, with 1,31%. Keywords: Association, Vicia, pigweed, volley, domesticated, weeds, ADEVA, Tukey, dry matter, organic matter, biomass
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    Evaluación de alternativas ecológicamente sustentable para la fertilización orgánica sólida y líquida en el cultivo de romanesco (Brassica oleracea var. Botrytis)
    (2014-06-07) Buenaño Salme, Mónica Emperatriz; Valle Velástegui, Edgar Luciano
    La presente investigación se realizó en el sector de Huachi Chico perteneciente a la provincia de Tungurahua, con el objetivo de evaluar técnicamente alternativas ecológicamente sustentable para la fertilización orgánica sólida y liquida en el cultivo de romanesco (Brassica oleracea L. var. Botrytis). Siendo los factores de estudio los subproductos de la agroindustria como champiñón, cascarilla de café y pelusa del fruto de la Palma africana; así como la aplicación de estos en forma sólida en una dosis de 4 Kg/m2 y en forma líquida con una dosis de 2 : 1 vía drench. Los tratamientos fueron 6. Se empleó el diseño experimental de parcelas divididas, en arreglo factorial 3*3. El tratamiento adecuado para la fertilización orgánica del romanesco fue el Subproducto de la agroindustria del Champiñón y la mejor forma de aplicación fue en forma sólida en una dosis de 4 Kg/ m2.