Universidad Nacional Agraria La Molina. Escuela de Posgrado. Doctorado en Ingeniería y Ciencias Ambientales

The use of organic amendments improves the quality and increases the fertility of the soils due to their adsorption properties, stimulates nutrient cycling and can be used to reduce the availability of heavy metals. The main objective of the research was to evaluate the effect of biochar (BC) derived from pig manure on the availability of Pb in a contaminated and limed agricultural soil. A randomized experimental design was applied, the pig manure was dried at room temperature (23 °C) and pyrolyzed at 500 °C for 2 h. Doses of 5%, 10% and 20% of BC were applied to the Pb soils contaminated (165.7 mg/kg), that were arranged in 2 kg pots except for the control sample, and Lactuca sativa was subsequently grown cultivated to evaluate the Pb availability. The results indicated an improvement in soil quality at higher BC dose, increase of 0.34 pH units, decrease of Pb extracted by EDTA (27% t...

La presente publicación, tiene por objetivo ofrecer, a los interesados en el cultivo de arveja, estudiantes de las ciencias agrarias, profesionales, así como a agricultores y público en general, el estudio del proceso productivo de la arveja de una manera clara, sencilla, enfatizando en aspectos de importancia para su comprensión objetiva. Se inicia resaltando la importancia de su cultivo como agente productivo para los productores y consumidores, atravesando por toda una suerte de agentes de acopio y distribución para llegar a los consumidores y su utilización como complemento culinario, resaltando sus beneficios en la salud humana. Dado que el centro de origen de este cultivo se encuentra en el mediterráneo, se analiza el proceso de introducción a nuestro continente y las regiones donde se adaptaron con mayor eficiencia. La morfología y taxonomía son tratadas con la mayor exh...

There are few bibliometric studies showing current technologies and their combinations for the remediation of contaminated soils. For this reason, a scientometric study was carried out in order to know the trends in soil contamination treatment technologies. The study considered original articles and reviews published in the Scopus and Web of Science databases between January 2010 and June 2021, evaluating: (a) characteristics of the publications, (b) main research sources, (c) citations and production by journals, (d) keywords used, (e) countries, institutions and authors active in research production, (f) most cited articles and (g) trends in soil treatment and remediation techniques. The results showed: (a) continuous growth of publications on soil remediation in the “Environmental Science” subject area and a limited contribution of the “Soil Science” and “Agriculture and Bi...