A study in Ethiopia tested the effect of adding lime to acidic soils on barley growth. They found that adding lime improved soil pH, reduced acidity, and increased phosphorus availability. This led to significant increases in barley yield and growth parameters at both study locations. In one area, dry biomass weight increased by 79.4% and grain yield by 40%. In another area, dry biomass, grain yield, and seed weight rose by 233%, 205%, and 17.3% respectively. The results show that adding lime to acidic soils can improve nutrient availability, especially phosphorus, which is crucial for crop growth.