The study looked at how soil nutrients vary across farmland in a specific region. They used geostatistics to analyze soil samples from a large crop field and a smaller experimental field. The results showed that soil nutrient levels varied significantly, with certain nutrients like organic matter, nitrogen, phosphorus, and potassium showing distinct patterns of spatial variability. This means that there is a correlation between soil nutrient levels over relatively large areas, which could help in developing more precise management strategies for soil nutrients.