The article discusses experiments on potato fertilization with increasing potassium doses. The researchers conducted 10 trials with different potassium levels, alongside nitrogen and phosphorus, between 1943 and 1947. Overall, the potassium had a small effect on potato growth. The best response, a 10% increase, was seen with a 45 kg/ha dose. In some cases, where soils were low in potassium, the response was higher at 18%, despite plant stands being affected. The researchers noted that the timing of fertilizer application and rainfall scarcity influenced the results, highlighting the need to adjust traditional application methods.