Evaluation of the effect of macronutrients from human urine as fertilizer in the grow of Lactuca Sativa
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Rev. Bol. Quim
Abstract
Spanish title: Evaluación del efecto de macronutrientes de Orina Humana como Fertilizante en el crecimiento de Lactuca sativa. El presente trabajo de investigación permitió evaluar y cuantificar el aporte de macro nutrientes en lechugas, como efecto de la adición de diferentes volúmenes de orina humana fermentada en muestras seleccionadas para este fin; obteniéndose resultados en porcentaje en peso para potasio, fósforo, nitrógeno y otros nutrientes, a la vez se determinó el contenido de agua, cenizas y fibra en muestras analizadas. Otro aspecto a destacar es, la composición de nutrientes presentes en la orina humana cuyo aporte en nitrógeno, fósforo y potasio es vital para el crecimiento de plantas, por lo cual el comportamiento de la orina humana como fertilizante en el riego de lechugas en el departamento de La Paz es una alternativa de trabajo para mejorar sustancialmente la producción de verduras y hortalizas. Esta experiencia se constituye en una novedosa técnica que está generando una producción de alimentos con elevado valor nutritivo no solo en lechugas (Lactuca sativa) variedad Crespa, sino en otras hortalizas de consumo masivo. Los resultados obtenidos muestran a este vegetal alimenticio con elevado porcentaje nutricional en potasio, nitrógeno y fósforo, comparado con valores reportados, esta diferencia se debe en parte a la reacción de los nutrientes de la orina humana fermentada y por otra la absorción de nutrientes del suelo donde se cultivaron las muestras de lechuga. El aporte de Lactuca sativa en relación a parámetros bromatológicos: cenizas, agua y fibra es muy significativo e importante al compararlo con otros vegetales como zanahorias, rábanos, etc. A la vez el aporte en minerales, vitaminas y otros componentes permiten mejorar la dieta alimentaria basada en este tipo de productos, todos de elevado consumo humano debido a su bajo costo en el mercado.
This research allows us to evaluate and quantify the contribution of macronutrients in lettuce, the effect of the addition of different volumes of fermented human urine samples selected for this purpose; obtaining results in weight percent for potassium, phosphorus, nitrogen and other nutrients, while the water content, ash and fiber samples analyzed was determined. Another aspect is the composition of nutrients in human urine, whose contribution in nitrogen, phosphorus and potassium is vital for the growth of plants, so that the behavior of human urine as fertilizer in the irrigation of lettuce in the department of La Paz is an alternative work to substantially improve the production of vegetables. This experience constitutes a novel technique that is generating food production with high nutritional value not only in lettuce (Lactuca sativa) variety crespa, but in other highly consumed vegetables. The results show this alimentary plant with higher nutritional percentage in potassium, nitrogen and phosphorus, compared with reported values. This difference is due in part to the reaction of the nutrients of the fermented human urine and other nutrients from the soil where samples of lettuce were grown. The contribution of Lactuca sativa in relation to bromatological parameters: ashes, water and fiber is very significant and important when compared with other vegetables like carrots, radishes, etc. While the contribution in minerals, vitamins and other components can improve food diet based on these products, all of high human consumption due to its low cost in the market.
This research allows us to evaluate and quantify the contribution of macronutrients in lettuce, the effect of the addition of different volumes of fermented human urine samples selected for this purpose; obtaining results in weight percent for potassium, phosphorus, nitrogen and other nutrients, while the water content, ash and fiber samples analyzed was determined. Another aspect is the composition of nutrients in human urine, whose contribution in nitrogen, phosphorus and potassium is vital for the growth of plants, so that the behavior of human urine as fertilizer in the irrigation of lettuce in the department of La Paz is an alternative work to substantially improve the production of vegetables. This experience constitutes a novel technique that is generating food production with high nutritional value not only in lettuce (Lactuca sativa) variety crespa, but in other highly consumed vegetables. The results show this alimentary plant with higher nutritional percentage in potassium, nitrogen and phosphorus, compared with reported values. This difference is due in part to the reaction of the nutrients of the fermented human urine and other nutrients from the soil where samples of lettuce were grown. The contribution of Lactuca sativa in relation to bromatological parameters: ashes, water and fiber is very significant and important when compared with other vegetables like carrots, radishes, etc. While the contribution in minerals, vitamins and other components can improve food diet based on these products, all of high human consumption due to its low cost in the market.
Description
Vol. 33, No. 1