PHYSICOCHEMICAL CHARACTERISTICS OF SOILS AND THEIR IMPACT ON THE PRODUCTIVITY OF COFFEE FARMS ON THE COAST OF OAXACA
PHYSICOCHEMICAL CHARACTERISTICS OF SOILS AND THEIR IMPACT ON THE PRODUCTIVITY OF COFFEE FARMS ON THE COAST OF OAXACA
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DOI: https://doi.org/10.22533/at.ed.9734112427081
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Palavras-chave: horizonte de suelo, zonas cafetaleras, nitrógeno inorgánico, Costa de Oaxaca
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Keywords: soil horizon, coffee-growing areas, inorganic nitrogen, Oaxaca Coast.
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Abstract:
The present study consisted of the characterization of soils in the coffee-growing areas of the Oaxaca coast, with the objective of generating useful information to improve the productivity of coffee plantations. Soil samples were analyzed from the horizons identified in four soil profiles in the municipalities of San Pedro Pochutla, Candelaria Loxicha and Pluma Hidalgo. In all profiles, medium to coarse textures and high apparent densities were found, particularly in the subsurface horizons. The pH found was strongly to moderately acidic. In the surface horizons, high values of Organic Carbon, Organic Matter, Total Nitrogen, Phosphorus and Potassium were found. On the contrary, the contents of the aforementioned elements decrease drastically in the subsurface horizons. When estimating the amount of inorganic Nitrogen in the surface horizons, quantities were found that varied from 303.8 kg ha-1 (25 cm of Depth); 313.2 kg ha-1 (24 cm of Depth); 256.2 kg ha-1 (26 cm of Depth) y 668.8 kg ha-1 (45 cm depth). When soil samples are taken in the surface stratum, generally from 0 to 30 cm, an inaccurate impression is obtained that the nutrients are present in adequate quantities for the crop (Rosas et al., 2008; Correa-Pérez, et al., (2014) because the subsurface horizons are not explored as occurs when soil samples are taken from horizons identified in soil profiles.
- Miguel Angel Cano García
- Verónica Mariles-Flores.
- Patricio Sánchez Guzmán
- Luis Eduardo García Mayoral.