Analysis of information sources in references of the Wikipedia article "Gran Chaco" in Slovenian language version.
alluvial sandy soils have P (phosphorus) levels of up to 200–300 ppm
The Gran Chaco was one of the last frontiers in South America – but agricultural development, largely driven by soy, is gathering pace.
alluvial sandy soils have P (phosphorus) levels of up to 200–300 ppm