ESTIMATION OF SOIL SALINITY IN PLOT FOR AGRICULTURAL USE USING REMOTE SENSING IN THE DISTRICT OF FILADELFIA, CHACO
ESTIMATION OF SOIL SALINITY IN PLOT FOR AGRICULTURAL USE USING REMOTE SENSING IN THE DISTRICT OF FILADELFIA, CHACO
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DOI: https://doi.org/10.22533/at.ed.973432426024
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Palavras-chave: Sistemas de Información Geográfica, teledetección, geoestadística, imagen satelital, conductividad eléctrica
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Keywords: Geographic Information Systems, remote sensing, geostatistics, satellite image, electrical conductivity.
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Abstract:
In the District of Philadelphia, Paraguay, soil salinization processes strongly threaten productive activity, increasing the need to use systems based on a precision agriculture approach, which allow the optimization of lands destined for production. Within this approach, Geographic Information Systems (GIS) play an important role, used to process data obtained through satellite images and field sampling. An agricultural plot of around 50 hectares covered by five types of crops (corn, sorghum, cotton, soybeans and mung) was presented as the study area, the distribution of which on the plot has varied from one year to the next. The electrical conductivity (EC) values were provided by the database of the Fernheim Cooperative of the city of Philadelphia, located in the Department of Boquerón of the Paraguayan Chaco, they are the result of the measurement with a Veris sensor in the entire plot of investigation in April 2019, with which a certain degree of salinity was observed. Geostatistics and remote sensing tools were used to achieve the general objective of the research, which consisted of evaluating the distribution of salinity in the soil in a plot of agricultural use in the Central Chaco, being carried out in the Philadelphia District of the Western region. The results obtained demonstrated that the relationship in terms of growth variability detected in the sorghum crop does not respond to the salinity variability of the plot, therefore, the EC values obtained are not significantly high to explain said variation. Factors such as texture, leveling and climatic conditions were considered to explain the variation in crop growth in the plot.
- Ana Claudia Souto Flecha
- Carlos Andrés Leguizamón Rojas
- Lucía Janet Villalba Marín
- Natalia Carolina Escobar Decoud