Examinando por Materia "Precios de fertilizantes"

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    Impacto de las variables económicas sobre los precios de los fertilizantes en el sector de la caña de azúcar en el Valle del Cauca (Colombia)
    (Universidad EAFIT, 2023) Orduz Balvín, María Alejandra; García Zapata, Estyven; Echeverri Castaño, Cristian Andrés
    This study aims to evaluate the impact of economic variables on fertilizer prices in the sugar cane sector in Valle de Cauca (Colombia). The production of sugar cane, which historically has been an important industry for this department, requires a large amount of supplies, and these are mostly imported into the country, so the variation in their prices has a significant impact on the total cost of production. No previous evidence of studies was found for Colombia. Therefore, a bibliographic review was made, in which several theories such as supply and demand were highlighted. The theories were then contrasted with several regression models (multiple, Ridge, Lasso, random forest and panel data), for which information was taken from the Dane through the SIPSA (Price and Supply Information System for the Agricultural Sector), which contains the monthly prices of DAP, KCL, urea and SAM fertilizers. Likewise, the data of the explanatory variables were taken with the same periodicity of the fertilizers. The results of the different models agreed with what was stated in the hypotheses, evidencing a positive effect of the variables WTI oil price, representative market rate, price per ton of imported fertilizers and war, on the variation in the prices of the fertilizers studied, these being the most determining variables in the variation of these prices.