In this study, researchers examined how adding lime to different soil depths affects plant growth and calcium uptake. They tested two types of acidic soil with varying aluminum levels. By treating the soils with calcium hydroxide, they changed the pH levels at different depths. The results showed that plant growth and calcium absorption depend on the right amount of lime in both topsoil and subsoil. Adding enough lime to the topsoil led to good plant yields, even if the subsoil had lower lime levels. Deeper subsoil liming had little impact unless the topsoil was shallow and more acidic. The soil with higher aluminum levels responded more to added lime. Youngly added calcium was more accessible to plants than calcium added earlier. As they increased lime application, the percentage of calcium absorbed from the topsoil source also increased. Root growth mirrored the results seen in plant yields and calcium uptake.