The study looked at how different types of fertilizer and cassava varieties affect the growth of cassava plants. They used two types of cassava plants and five different fertilizers to see how dry matter (biomass) accumulated in the plants. They found that both types of cassava plants had similar patterns of dry matter accumulation, but one type had more growth above ground while the other had more growth below ground. Adding nitrogen fertilizer helped the plants grow more dry matter, followed by potassium and phosphorus. Using a combination of nitrogen, phosphorus, and potassium fertilizer increased the growth of cassava plants even more. The two types of cassava plants responded differently to the fertilizer, possibly due to their different nutrient needs and root development levels.