• Data reference period
• Geographic localization (NUTS - 2001)

• AGRICULTURAL HOLDING:  Technical-economic unit that uses common production factors such as labour, machinery, facilities, land, among others, fulfilling the following four conditions: 1) yield agricultural products or maintain, in good agricultural and environmental conditions, the lands that are no longer used for productive purposes; 2) reach or exceed a certain size (in area or number of animals); 3) be subject to a single management; 4) be located in a well-defined and identifiable area.
• REFERENCE PERIOD:  The length of time for which data are collected, e.g. a specific day, month or year.
• LAND ANALYSIS:  A laboratory procedure carried out on one or more soil samples to determine physical and chemical parameters making it possible to ascertain the physical and chemical fertility of the soil and assess the most appropriate fertilisers and their quantities.

(Agricultural holdings that carried out soil analysys in the last 3 years/ Agricultural holdings)*100