Citas bibligráficas
Castillo, P., (2022). Fitoextracción del mercurio y fertilidad con cultivos de cobertura en suelos degradados por la minería aurífera aluvial en Puerto Maldonado [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/5223
Castillo, P., Fitoextracción del mercurio y fertilidad con cultivos de cobertura en suelos degradados por la minería aurífera aluvial en Puerto Maldonado []. PE: Universidad Nacional Agraria La Molina; 2022. https://hdl.handle.net/20.500.12996/5223
@misc{renati/1114363,
title = "Fitoextracción del mercurio y fertilidad con cultivos de cobertura en suelos degradados por la minería aurífera aluvial en Puerto Maldonado",
author = "Castillo Chávez, Pedro Miguel",
publisher = "Universidad Nacional Agraria La Molina",
year = "2022"
}
The degradation of soils by informal mining activity in Madre de Dios is one of the main concerns that threaten biodiversity and the health of the ecosystems of this region, the informal mining activity that is developed alters the soil structure causing it to lose several of its functions, one of them is the ability to support the development of flora, therefore it is necessary to use low-input technologies such as legumes, which contribute to restoring these impacted areas. Plant interactions with different rhizosphere microorganisms have diverse effects on plant health, productivity, and soil fertility. Several types of bacteria perform certain vital functions called plant growth-promoting rhizobacteria (PGPR), which have a positive impact on the physiological activities of plants, such as symbiotic nitrogen fixation, production of siderophores, phytohormones and antibiotics; counteracting the effect of several pathogenic fungi; solubilization of soil phosphate; production of the growthpromoting indole acetic acid (IAA). In addition, the toxic effects of heavy metals can also be counteracted by PGPR. The present investigation evaluated the capacity of five legumes (Crotalaria juncea, Stylosanthes guianensis, Pueraria phaseoloides and Centrosema macrocarpum) to fix nitrogen, improve the physical and chemical properties of soils degraded by informal gold mining in Puerto Maldonado, and the bioaccumulation of mercury in these legumes. A completely randomized block design was carried out in the area degraded by mining, in which after seven months of planting the legumes, the development of the five legumes understudy was evaluated, these were analyzed by DMA (Direct Mercury Analyzer) both in the foliar part and in the root part, the nitrogen content was also evaluated in its different parts (stem, leaves and roots) and soil characterization was performed before and after planting to evaluate if there are positive effects on soil quality
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