Soil acidity is one of the most important indicators of soil quality, directly affecting crop yields. The more acidic the soil, the lower the yield, with losses potentially reaching 20–50%. This is a particularly significant issue for farms in western and eastern Lithuania, where acidic soils are most common. Soil acidification is a natural process accelerated by acidic precipitation, intensive use of physiologically acidic mineral fertilizers, pesticide application, nutrient leaching, and nutrient removal with harvested crops. In order to farm sustainably and economically, farmers are seeking solutions to reduce soil acidification. One of the most effective methods is liming. Liming helps regulate plant nutrition with macro- and micronutrients, improves the physical and chemical properties of soil, enhances plant growing conditions, and positively affects photosynthesis as well as protein and carbohydrate metabolism. Nutrient availability is highest when soil pH ranges from 6.0 to 6.5. In acidic soils (around pH 5.5), phosphorus, potassium, calcium, and magnesium become less available, while micronutrient leaching and denitrification processes increase. When farming in acidic soils, liming materials and application rates are selected according to soil pH, soil texture, and the crops planned for cultivation. The highest liming efficiency is achieved when soil moisture is sufficient and liming is carried out in dry and calm weather conditions. To evaluate the impact of liming, the Lithuanian Agricultural Advisory Service implemented a three-year project and carried out eight demonstration field trials in moderately acidic soils. The trials were established in western Lithuania (Tauragė, Telšiai, Klaipėda, and Plungė districts) and eastern Lithuania (Šalčininkai district). Different liming materials were used because the soils varied in texture and agrochemical properties, although all tested soils were acidic. It is important to know both the chemical composition and the form of liming materials. The chemical composition determines the neutralizing capacity, while the form affects spreading efficiency and the speed of action. Powdered liming materials act the fastest, granulated materials act more slowly, and crushed lime materials have the longest-lasting effect. Higher lime application rates are recommended for heavier soils, while lighter soils should be limed in smaller doses applied over several treatments. Carbonate-based liming materials are recommended, and liming should be carried out systematically – every 4–5 years or annually using smaller application rates. Based on the research results, recommendations were prepared to help farmers maintain soil fertility, reduce crop production costs, improve farm economic performance, and increase farm competitiveness.