Adjustment and preservation of an optimal pH value typical for the soil of a particular location - basic requirement for an effective and environmentally compatible plant production.

摘要

The lime content of the soil influences all factors important for plant growth and thus primarily determines soil fertility. For this purpose, the measurement of the pH value of the soil as a basis for determining the lime requirements of soils and plants has proved its worth. The importance of controlling soil lime condition (within the framework of the German Fertilizer Application Ordinance) is emphasized. The results of numerous long-term field trials on liming demonstrate the importance of lime application to soils for a successful and sustainable plant production. The studies refer to lime content of arable soils, reasons for soil acidification in plant production, yield reaction of crops and field vegetables in correlation to the pH value of soils as well as aspects of yield security. It can be inferred from the particular significance of the lime supply of soils for its impact on soil fertility that the catalogue of especially noteworthy soil fertility parameters should be supplemented by the factors "lime status of the soil" and "soil reaction"..