Additionally, the nutrient content and yield of "D. exilis" can be affected by the soil nutrition present in the varying climatic conditions of West Africa, which is where "D. exilis" primarily grows. Through experimentation, it was seen that the nitrogen concentration in the soil has the greatest effect on the nutrition and productivity of "D. exilis". When nitrogen was added to the soil in limited quantities with an excess of potassium and phosphorus, productivity of "D. exilis" increased by 22%. Such significant results were not observed, however, when either potassium or phosphorus was added to the soil with excess nitrogen and phosphorus, or with excess nitrogen and potassium, respectively. On the contrary, when nitrogen, phosphorus, and potassium were added to the soil in equal and moderate quantities, the greatest amount of yield and nutrition was seen. This overall trend is seen as a result of the low rainfall and poor soil conditions that "D. exilis" naturally grows in.