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Plan de Negocios para una Empresa Productora y Comercializadora de Ensaladas Hidropónicas
(Universidad de ChilePrograma Cybertesis, 2009)
El objetivo del presente trabajo de título fue el desarrollo de un plan de negocios para una empresa productora y comercializadora de ensaladas hidropónicas llamada Hidrotango, la cual es una empresa familiar formada en el año 2000. La justificación...
Análisis, diseño y construcción de un sistema hidropónico automatizado para autoconsumo de vegetales y plantas ornamentales
(Universidad de Chile, 2016)
cultivos hidropónicos, para luego identificar las labores más importantes que se deben desarrollar en la práctica, con el fin de identificar por separado las distintas acciones que debe llevar a cabo el sistema, para finalmente formalizar la programación e...
Estimación de la huella hídrica es la producción de lechugas "baby" bajo sistema hidropónico
(Universidad de Chile, 2014)
, haciendo además necesario intensificar investigaciones que
compatibilicen productividad y sustentabilidad.
Respondiendo a estas exigencias, la producción de hortalizas utiliza una técnica moderna:
el cultivo hidropónico o sin suelo. Según señala...
........................................................................................................ 11 Material vegetal ............................................................................................................. 11 Sistema de cultivo hidropónico NFT ............................................................................. 12...
........................................................................................................ 11 Material vegetal ............................................................................................................. 11 Sistema de cultivo hidropónico NFT ............................................................................. 12...
Evaluación de alternativas hortícolas para la región de Aysén mediante el uso de hidroponía
(Universidad de Chile, 2020)
incorporar alternativas innovadoras para los agricultores
locales mediante el uso de cultivos hidropónicos. Se realizó un análisis del uso de sistemas
NFT (Nutrient Film Technique) en tres localidades de la región: Coyhaique, Cochrane y
Puerto Aysén. Donde se...
The Aysén Region has historically presented vegetable production limitations. Mainly, due to weather characteristics and a low use of technology that allow to improve their productivity. Therefore, the region presents a deficit close to 80% of demand vegetable, so it is necessary to appeal to importation. This process is hindered by the geomorphology and extension of the territory, determining a poorly varied and low-quality offer. During the project "Horticultural development in the Aysén del General Carlos Ibáñez del Campo Region", this research focused on promoting diversification of leafy vegetable species in local production and innovating in options for farmers using hydroponic crops. An analysis of the use of NFT (Nutrient Film Technique) hydroponic systems was carried out in three region locations: Coyhaique, Cochrane and Puerto Aysén. Were the response obtained by commercial cultivars of lettuce (Lactuca sativa L.), kale (Brassica oleracea var. acephala DC.) and mizuna (Brassica rapa var. japonica) was evaluated. Weight, diameter, height and number of leaves were evaluated, and yield parameters that include production per square meter, plant volume, discard percentage and mortality were estimated. According to the results, it is possible to confirm that the use of the NFT hydroponic system in different locations of Aysén region allows a diverse vegetables production, providing productive options for farmers. The behavior of the mizuna cultivar Nagano for its full plant production format is highlighted, as well as the cultivar of kale Moscow. For leaf harvesting production format, an aproppiate response was obtained with the use of kale F1 and Asima cultivars, as well as for the Red mizuna cultivar. Regarding lettuce cultivars evaluated, a high sensibility to the environmental conditions inside the greenhouses was observed, thus evidencing the need to investigate more about different cultivars, as well as to carry out a rigorous temperature and humidity control at greenhouses....
The Aysén Region has historically presented vegetable production limitations. Mainly, due to weather characteristics and a low use of technology that allow to improve their productivity. Therefore, the region presents a deficit close to 80% of demand vegetable, so it is necessary to appeal to importation. This process is hindered by the geomorphology and extension of the territory, determining a poorly varied and low-quality offer. During the project "Horticultural development in the Aysén del General Carlos Ibáñez del Campo Region", this research focused on promoting diversification of leafy vegetable species in local production and innovating in options for farmers using hydroponic crops. An analysis of the use of NFT (Nutrient Film Technique) hydroponic systems was carried out in three region locations: Coyhaique, Cochrane and Puerto Aysén. Were the response obtained by commercial cultivars of lettuce (Lactuca sativa L.), kale (Brassica oleracea var. acephala DC.) and mizuna (Brassica rapa var. japonica) was evaluated. Weight, diameter, height and number of leaves were evaluated, and yield parameters that include production per square meter, plant volume, discard percentage and mortality were estimated. According to the results, it is possible to confirm that the use of the NFT hydroponic system in different locations of Aysén region allows a diverse vegetables production, providing productive options for farmers. The behavior of the mizuna cultivar Nagano for its full plant production format is highlighted, as well as the cultivar of kale Moscow. For leaf harvesting production format, an aproppiate response was obtained with the use of kale F1 and Asima cultivars, as well as for the Red mizuna cultivar. Regarding lettuce cultivars evaluated, a high sensibility to the environmental conditions inside the greenhouses was observed, thus evidencing the need to investigate more about different cultivars, as well as to carry out a rigorous temperature and humidity control at greenhouses....
Efecto de las distintas densidades poblacionales sobre la concentración de nitratos en hojas de espinaca "baby leaf" Spinacia oleracea L. cultivar monstruosa viroflay, en un sistema hidropónico de raíz flotante
(Universidad de Chile, 2015)
de las características que hace atractiva ésta hortaliza se encuentra su sabor agradable y su alto valor nutritivo. A pesar de sus cualidades, la espinaca acumula grandes cantidades de nitratos en sus hojas, lo que puede producir problemas a la salud...
Producción y comercialización de hortalizas en la Región de Aysén
(2019)
........................................................................................................ 76
CAPÍTULO 6. EXPERIENCIAS PRODUCTIVAS Y CARACTERÍSTICAS DE
LOS PRINCIPALES CULTIVOS HORTÍCOLAS DESARROLLADOS EN AYSÉN ............. 78
Hortalizas de Estación Fría...
de estos cultivos se destina al procesamiento agroindustrial, como hortalizas congeladas, en conserva, deshidratadas, jugo, pasta y salsas, entre otros formatos, que en su mayoría se destinan a exportación. En términos de su perfil productivo...
de estos cultivos se destina al procesamiento agroindustrial, como hortalizas congeladas, en conserva, deshidratadas, jugo, pasta y salsas, entre otros formatos, que en su mayoría se destinan a exportación. En términos de su perfil productivo...
Evaluación de innovaciones para el sector hortícola de la Región de Aysén
(Universidad de Chile, 2018)
producción utilizadas tradicionalmente, no contribuyen a un volumen de importancia ni a una gran variedad de hortalizas, generando dependencia de productos hortícolas traídos desde otras zonas del país. Bajo este contexto, la investigación se enfoca por una...
Determinación de triclosán en tejido vegetal y evaluación de su fracción bioaccesible
(Universidad de Chile, 2016)
, se planteó para este estudio el evaluar la bioaccesibilidad de triclosán en dos hortalizas consumidas frecuentemente en Chile. Se eligió la lechuga (Lactuca Sativa L.) como modelo de hortaliza cuya parte comestible no está en contacto con el suelo, y...
In view of the toxicity of triclosan, the use of this compound in various personal hygiene prod-ucts and information published in other countries about the presence of triclosan in wastewater, which are used for irrigation in agricultural areas, was proposed for this study to evaluate the bioaccessibility of triclosan in two vegetables commonly consumed in Chile. Lettuce (Lactuca sativa L.) was chosen as a model vegetable whose edible portion is not in contact with the soil, and radish (Raphanus sativus L.) whose edible portion is developed in direct contact with the soil. To carry out this goal, both species were grown in a hydroponic medium and subsequently treated with a solution containing triclosan. The bioaccessibility of triclosan in plant tissue was estimated using an in vitro test based on the physiology (PBET). For the analysis of triclosan it was implemented and validated a method by gas chromatography with electron micro capture detector (GC-μECD) to determine the pseudototal concentration in the vegetal matrix and the concentration in the gastrointestinal fluids substitutes. The results indicate that the triclosan can be extracted efficiently from plant matrices using a solvent consisting of water: acetonitrile 1:1 and metaphosphoric acid 2% (w/w) with subsequent concentration and cleaning in columns of solid phase extraction (C-18). The optimized method complies with the main validation parameters, among them are highlighted a selective and sensitive method with limits of detection and quantification of the technique of 0.32 and 0.97 μg/L, respectively, with a coefficient of variation of 10.7% in reproducibility and with a 88.1% recovery. Triclosan can be absorbed by lettuce and radish grown hydroponically. In the case of lettuce, triclosan can be translocated to the aerial part significantly, while for radish, compound accu-mulates in the storage organ of the plant. Through a PBET test it shows that a fraction of triclo-san is bioaccessible in the edible part of lettuce and radish. The bioaccessible concentrations in lettuce leaves varied in the range 0.14-0.45 μg/g, which represents a variation in the bioac-cessibility in the range 5.6-16%. In the case of radish, the ranges were 0.15-0.34 μg/g and 7.9-36.6%, respectively...
In view of the toxicity of triclosan, the use of this compound in various personal hygiene prod-ucts and information published in other countries about the presence of triclosan in wastewater, which are used for irrigation in agricultural areas, was proposed for this study to evaluate the bioaccessibility of triclosan in two vegetables commonly consumed in Chile. Lettuce (Lactuca sativa L.) was chosen as a model vegetable whose edible portion is not in contact with the soil, and radish (Raphanus sativus L.) whose edible portion is developed in direct contact with the soil. To carry out this goal, both species were grown in a hydroponic medium and subsequently treated with a solution containing triclosan. The bioaccessibility of triclosan in plant tissue was estimated using an in vitro test based on the physiology (PBET). For the analysis of triclosan it was implemented and validated a method by gas chromatography with electron micro capture detector (GC-μECD) to determine the pseudototal concentration in the vegetal matrix and the concentration in the gastrointestinal fluids substitutes. The results indicate that the triclosan can be extracted efficiently from plant matrices using a solvent consisting of water: acetonitrile 1:1 and metaphosphoric acid 2% (w/w) with subsequent concentration and cleaning in columns of solid phase extraction (C-18). The optimized method complies with the main validation parameters, among them are highlighted a selective and sensitive method with limits of detection and quantification of the technique of 0.32 and 0.97 μg/L, respectively, with a coefficient of variation of 10.7% in reproducibility and with a 88.1% recovery. Triclosan can be absorbed by lettuce and radish grown hydroponically. In the case of lettuce, triclosan can be translocated to the aerial part significantly, while for radish, compound accu-mulates in the storage organ of the plant. Through a PBET test it shows that a fraction of triclo-san is bioaccessible in the edible part of lettuce and radish. The bioaccessible concentrations in lettuce leaves varied in the range 0.14-0.45 μg/g, which represents a variation in the bioac-cessibility in the range 5.6-16%. In the case of radish, the ranges were 0.15-0.34 μg/g and 7.9-36.6%, respectively...
Producción de plantines de sandía en sustratos inertes
(Universidad de Chile, 2012)
Se evaluó el comportamiento de dos cultivares de sandía (Citrullus lanatus (Thumb.) Mat. & Nak.) desarrollados en sustratos inertes durante el período de almácigo y 20 días después de trasplante a un sistema hidropónico NFT-modificado, con el fin de...
The effect of two watermelon cultivars (Citrullus lanatus (Thumb.) Mat. & Nak.) developed in inert substrates was evaluated during the nursery growth and 20 days after transplant to a NFT-modified hydroponic system to assess the postransplant stress. ´Yellow Doll´ and ´Santa Amelia´ cultivars were evaluated. The substrates used were granular rockwool (Agrolan®), expanded perlite A6 and a mixture of both substrates in equal part. To measure the duration of the seedling development stage, from emergency until 2nd to 3rd true leaf (transplant stage) the accumulated degree-days were followed through the process. At transplant stage aerial fresh and dry matter, plant height and leaf area were evaluated. After 20 days of establishment in an hydroponic system, the total number of leaves and number of lost plants (establishment %) were also evaluated. With the exception of plant height at transplant stage, no significant differences were observed between treatments due to the studied factors. Seedling growing only in perlite need to accumulate less degree-days to reach the phenological stages than seedlings growing in granular rockwool. However, no significant differences were obtained between the substrate with the other growth measurements. At 2nd - 3rd true leaf stage the cultivars showed significant effect on fresh matter, ´Santa Amelia´ seedlings was significantly higher than ´Yellow Doll´ seedlings, results that were maintained 20 days after transplant. The other variables on this research did not show significant differences. According to the results, independent of the seedling bed substrate, both cultivars had 100% establishment in the NFT-modified hydroponic system, without affecting the plant growth due to the intrinsic characteristics of the substrates. Key words: Citrullus lanatus, ´Yellow Doll´, ´Santa Amelia´, rockwool, perlite ....
The effect of two watermelon cultivars (Citrullus lanatus (Thumb.) Mat. & Nak.) developed in inert substrates was evaluated during the nursery growth and 20 days after transplant to a NFT-modified hydroponic system to assess the postransplant stress. ´Yellow Doll´ and ´Santa Amelia´ cultivars were evaluated. The substrates used were granular rockwool (Agrolan®), expanded perlite A6 and a mixture of both substrates in equal part. To measure the duration of the seedling development stage, from emergency until 2nd to 3rd true leaf (transplant stage) the accumulated degree-days were followed through the process. At transplant stage aerial fresh and dry matter, plant height and leaf area were evaluated. After 20 days of establishment in an hydroponic system, the total number of leaves and number of lost plants (establishment %) were also evaluated. With the exception of plant height at transplant stage, no significant differences were observed between treatments due to the studied factors. Seedling growing only in perlite need to accumulate less degree-days to reach the phenological stages than seedlings growing in granular rockwool. However, no significant differences were obtained between the substrate with the other growth measurements. At 2nd - 3rd true leaf stage the cultivars showed significant effect on fresh matter, ´Santa Amelia´ seedlings was significantly higher than ´Yellow Doll´ seedlings, results that were maintained 20 days after transplant. The other variables on this research did not show significant differences. According to the results, independent of the seedling bed substrate, both cultivars had 100% establishment in the NFT-modified hydroponic system, without affecting the plant growth due to the intrinsic characteristics of the substrates. Key words: Citrullus lanatus, ´Yellow Doll´, ´Santa Amelia´, rockwool, perlite ....
Efecto de diferentes temperaturas sobre la actividad respiratoria de berros (Nasturtium officinale R. Bar.) y rúcula (Eruca sativa Mill.) mínimamente procesadas en fresco
(Universidad de Chile, 2012)
con un criterio de corte de 20 a 25 cm y 25 a 35 cm de altura de cultivo, respectivamente (Figura
1).
Figura 1. Sistema de producción de berros hidropónicos.
Se utilizaron bandejas plásticas de polietileno de 500 mL con tapa, para el...
, 1999). Estas características han permitido un gran aumento en la elaboración y comercialización de frutas y hortalizas mínimamente procesadas (Raybaudi-Massilia et al., 2007). Los productos mínimamente procesados es el sub-sector con mayor...
, 1999). Estas características han permitido un gran aumento en la elaboración y comercialización de frutas y hortalizas mínimamente procesadas (Raybaudi-Massilia et al., 2007). Los productos mínimamente procesados es el sub-sector con mayor...