Abstract:
Chemical fertilizers, when properly used, provide a satisfactory source of plant nutrients and can increase the yield and quality of crops when applied to nutrient-deficient soils. Other materials such as manure, sewage sludge, and industrial wastes may supplement the nutrient needs of most crops. In many
situations, because of guaranteed analysis, accessibility, and transportation costs, chemical fertilizers provide the least expensive and accurate means of supplying plant nutrient requirements. Soil acidity may be one of the factors that limit yield and growth responses to applied fertilizer. Lime is applied
to reduce soil acidity.
