DIS4ME DIS4ME Homepage | DESERTLINKS Homepage | © DESERTLINKS 2004
English-EN | Español-ES | Italiano-I | Ελληνικά-GR | Portuguese-PT
Desertification Indicator System for Mediterranean Europe


1. Definition

Name GROSS MARGIN INDEX
Brief definition Comparison between Standard Gross Margin (SGM) of each crop/husbandry
Unit of measure Euro
Spatial scale  
Temporal scale  

2. Position within the logical framework DPSIR

Type of Indicator Driving Force

3. Target and political pertinence

Objective The indicator aims to show how the market influences the choice of farmers in terms of land use and crop rotation. In fact if a simple crop has a higher SGM it will be grown consecutively without any rotation. If an equilibrium exists between the crops, then the farmers will easily use more environmently friendly rotations.
Importance with respect to desertification Environmental sustainability could be compromised by the need for short-term economic sustainability. Economic signals or support mechanisms should be developed allowing farmers to act economically yet maintaining the sustainability of their cropping system. To encourage farmers to take rational economic decisions and be environmentally responsible, the relative prices of agricultural products need to be considered.
International Conventions and agreements The CCD emphasizes the importance of measures to improve the economic environment with a view to eradicating poverty, increasing income and employment opportunities especially for the poorest members of the community.
Secondary objectives of the indicator It could give a measure of the use of "dangerous" input (fertilizer, fuel etc.).

4. Methodological description and basic definitions

Definitions and basic concepts

Standard Gross Margins

The concept of Standard Gross Margin (SGM) is used to determine the economic size of farms, which is expressed in terms of European Size Units (ESU). This concept is also used in the Farm Structure Survey organised by Eurostat. For each region all crop and livestock items are accorded an SGM. The Liaison Agencies calculate the SGMs themselves on the basis of empirical data collected from farms. To avoid bias caused by fluctuations (e.g. in production due to bad weather or in input/output prices) three year averages are taken. SGMs are expressed in Commission publications in European Currency (EUR/ECU). SGMs are updated every two years and are calculated on a regional basis for more than 90 separate crop and livestock items. This large number of items not only reflects the diversities of agriculture within the European Union but also indicates the level of detail that is required to ensure that the results of FADN and other surveys are both comprehensive and reliable.

Benchmarks Indication of the values/ranges of value
  • I° range: < Local Mean -St. Dev.
  • II° range: >Local Mean - St. Dev. < Local Mean
  • III° range: > Local Mean < Local Mean + St. Dev.
  • IV° range: > Local Mean + St. Dev.
Methods of measurement The standard Gross Margin (SGM) of a crop or livestock item is defined as the value of output from one hectare or from one animal less the cost of variable inputs required to produce that output. Having a definite set of SGM of potential crops, the indicator measures the differences (in Euros) between them for each crop/husbandry.
Limits of the indicator It does not take in account the accessibility of the market in terms of infrastructure.
Linkages with other indicators Net farm income; Mechanization index; Fertilizer application

5. Evaluation of data needs and availability

Data required to calculate the indicator Standard Gross Margin for each crop/husbandry
Data sources The Farm Accountancy Data Network (FADN). At national level the responsibility for FADN data collection rests with the Liaison Agencies, often together with agricultural research institutes. These either employ their own staff to visit sample farms and to collect the data, or they contract this work out to accountants, universities, farmers' cooperatives or other organisations.
Availability of data from national and international sources FADN

6. Institutions that have participated in developing the indicator

Main institutions responsible University of Basilicata

Other contributing organizations  

7. Additional information

Bibliography

The European Commission DG Agriculture: Financing the common agricultural policy.

OECD, 1999: Environmental indicators for agriculture, methods & results
http://europa.eu.int/

Other references  
Contacts Name and address

Prof. Giovanni Quaranta
Dipartimento Tecnico-Economico per la Gestione del Territorio Agricolo-Forestale
Università della Basilicata
Via Macchia Romana
85100 Potenza
Italia
quaranta@unibas.it