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Žemės ūkio mokslai / Agricultural Sciences

ISSN 1392-0200


2006 m. Nr. 3

The application of index method for the analysis of the change of the harvest of agricultural crops
Vida Čiulevičienė

This article deals with theoretical and practical aspects of factor index analysis. On the basis of the index theory the main principles of application of this method and problems are formulated. Considerations how to harmoniously join the forms of absolute and index analysis are mentioned, and the problem of choosing weighted price indexes is discussed.
On the basis of summarized information on the areas of grain crops, crop harvest and yield in Lithuania during the period 2000–2004, possibilities of applying the index method are shown. The index method may be successfully applied for the calculation of harvest of both separate and total grain crops, as well as of the impact of factors influencing it.
While analyzing the change of agricultural crops harvest, individual and aggregate indexes can be calculated.
The individual indexes are applied to analyze the harvest of a single crop, while the aggregate indexes are used for the group of the same sort of crops (homogeneous).
The use of indexes allows us to calculate not only a relative but also an absolute change of the total harvest and to determine the magnitude of factors which influence this change expressed in absolute and relative indexes. In this case the index of areas under crops of fixed composition and the index of yield are helpful.
Having the data of several years base and chain indexes may be calculated; thus an analysis may be very exhaustive.
The advantage of indexes is that they are easily interpreted and calculated. The index method may be applied not only for the analysis of the change of the harvest (and factors which influence it) grain crops but also of other homogeneous crops (e.g. vegetables, forage crops).
When applying this method for the analysis of the total harvest of forage crops, it is essential to use coefficients of forage nutritiousness.

Keywords: indexes, factor analysis, absolute change, relative change, crop harvest

Numeriai:

2012 - T.19
Nr.1

2011 - T.18
Nr.1, Nr.2, Nr.3, Nr.4

2010 - T.17
Nr.1-2, Nr.3-4

2009 - T.16
Nr.1-2, Nr.3-4

2008 - T.15
Nr.1, Nr.2, Nr.3, Nr.4

2007 - T.14
Nr.1, Nr.2, Nr.3, Nr.4, Nr.Priedas

2006
Nr.1, Nr.1.Priedas, Nr.2, Nr.3, Nr.4

2005
Nr.1, Nr.2, Nr.3, Nr.4

2004
Nr.1, Nr.2, Nr.3, Nr.4

2003
Nr.1, Nr.2, Nr.3, Nr.4

2002
Nr.1, Nr.2, Nr.3, Nr.4

2001
Nr.1, Nr.2, Nr.3, Nr.4