The study looked at how soil acidity changes in areas where cassava is grown a lot in Southeastern Vietnam. They found that the soil's ability to resist changes in pH is low, which means it can easily become more acidic. This could be a problem for growing crops. The researchers suggest that adding lime to the soil could help prevent further acidification. They also found that certain factors in the soil, like aluminum, play a big role in how acidic the soil is. This information could help farmers improve their soil quality and crop yields.