Efecto de bacterias diazótrofas y su importancia para el rendimiento de los cultivos de ciclo corto
| dc.contributor.advisor | Mejía González, Adriana | |
| dc.contributor.author | García Castro, Joel Darwin | |
| dc.date.accessioned | 2022-05-02T16:18:41Z | |
| dc.date.available | 2022-05-02T16:18:41Z | |
| dc.date.issued | 2022 | |
| dc.identifier.uri | http://dspace.utb.edu.ec/handle/49000/11408 | |
| dc.description | Soils for crop production often suffer from frequent degradation and consequently medium fertility; This has caused low yields per surface unit, which also affects the economic income of the producers. The indiscriminate use of chemical products in crops has caused environmental contamination and in the health of the population, being essential the use of products based on microorganisms, which have not been studied in depth and that farmers by belief doubt their effectiveness. The conclusions determine that the native microorganisms with properties that promote plant growth are Azotobacter, Burkholderia and Azospirillum, considered as biofertilizers in crops of agronomic interest; the isolation of diazotrophic bacteria, their identification by reliable methods and the evaluation of their ability to promote plant growth, in addition to being an option in research processes for agricultural purposes, is a good alternative to improve the nutrition and quality of crops, which contributes to the improvement of the plant-soil-microorganism system; the bacteria Azospirillum sp. and Azotobacter sp. have been reported as plant growth promoters in plants obtaining increases in growth parameters, root length, height and production and the effect of the bacterium Azotobacter sp. It is evident from the beginning of the crop, increasing the number of seedlings in seedbeds, height growth, number of leaves, stem diameter, leaf area and plant biomass, making it possible to shorten the harvest cycle in crops by 7-10 days. short cycle. | es_ES |
| dc.description | Soils for crop production often suffer from frequent degradation and consequently medium fertility; This has caused low yields per surface unit, which also affects the economic income of the producers. The indiscriminate use of chemical products in crops has caused environmental contamination and in the health of the population, being essential the use of products based on microorganisms, which have not been studied in depth and that farmers by belief doubt their effectiveness. The conclusions determine that the native microorganisms with properties that promote plant growth are Azotobacter, Burkholderia and Azospirillum, considered as biofertilizers in crops of agronomic interest; the isolation of diazotrophic bacteria, their identification by reliable methods and the evaluation of their ability to promote plant growth, in addition to being an option in research processes for agricultural purposes, is a good alternative to improve the nutrition and quality of crops, which contributes to the improvement of the plant-soil-microorganism system; the bacteria Azospirillum sp. and Azotobacter sp. have been reported as plant growth promoters in plants obtaining increases in growth parameters, root length, height and production and the effect of the bacterium Azotobacter sp. It is evident from the beginning of the crop, increasing the number of seedlings in seedbeds, height growth, number of leaves, stem diameter, leaf area and plant biomass, making it possible to shorten the harvest cycle in crops by 7-10 days. short cycle. | es_ES |
| dc.description.abstract | Los suelos para la producción de cultivos muchas veces sufren frecuentes degradaciones y por consiguiente fertilidad media; esto ha ocasionado bajos rendimientos por unidad de superficie, lo que además repercute en los ingresos económicos de los productores. El uso indiscriminado de productos químicos en los cultivos ha causado contaminación ambiental y en la salud de la población, siendo indispensable el uso de productos a base de microorganismos, que no han sido estudiados a profundidad y que los agricultores por creencia dudan de su efectividad. Las conclusiones determinan que los microorganismos nativos con propiedades que promueven el crecimiento vegetal son Azotobacter, Burkholderia y Azospirillum, consideradas como biofertilizantes en cultivos de interés agronómico; también el aislamiento de bacterias diazótrofas, su identificación mediante métodos confiables y la evaluación de su capacidad como promotoras del crecimiento vegetal, además de ser una opción en procesos investigativos con fines agrícolas, es una buena alternativa para mejorar la nutrición y la calidad de los cultivos, lo que contribuye al mejoramiento del sistema planta-suelo-microorganismo; se considera que las bacterias Azospirillum sp. y Azotobacter sp. han sido reportadas como promotoras de crecimiento vegetal en plantas obteniendo incrementos en los parámetros de crecimiento, longitud radical, altura y producción y el efecto de la bacteria Azotobacter sp. se evidencia desde los inicios del cultivo, incrementándose el número de plántulas en semilleros, crecimiento, altura, número de hojas, diámetro del tallo, área foliar y biomasa vegetal, posibilitando el acortamiento entre 7 a 10 días del ciclo de obtención de la cosecha en cultivos de ciclo corto. | es_ES |
| dc.format.extent | 19 p. | es_ES |
| dc.language.iso | es | es_ES |
| dc.publisher | BABAHOYO: UTB, 2021 | es_ES |
| dc.rights | Atribución-NoComercial-SinDerivadas 3.0 Ecuador | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ec/ | * |
| dc.subject | Nitrógeno | es_ES |
| dc.subject | Bacterias | es_ES |
| dc.subject | Diazótrofas | es_ES |
| dc.subject | Rendimiento | es_ES |
| dc.title | Efecto de bacterias diazótrofas y su importancia para el rendimiento de los cultivos de ciclo corto | es_ES |
| dc.type | bachelorThesis | es_ES |
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