Title: A probability distribution for crop yields in Poland


Górski, Tadeusz

Date issued/created:


Resource type:



Geographia Polonica Vol. 82 No. 1 (2009)



Place of publishing:



24 cm


An important source of risk in agricultural production is the variability to crop yields reflecting irregularly changing weather. This variability may be described as a stochastic process that has a function of density. Analyses of historical data on crop yields reveal that the function of density changed from right-skewed to left-skewed, along with increasing mean yields. All examined yields of crops cultivated recently in Poland demonstrate the left skew, which does not diminish with the aggregation of acreage. A fairly good approximation of the probability distribution for actual yields may be obtained using the log-normal distribution with an inverted abscissa.


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Geographia Polonica





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oai:rcin.org.pl:55501 ; 0016-7282 ; 10.7163/GPol.2009.1.5


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Institute of Geography and Spatial Organization of the Polish Academy of Sciences

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Central Library of Geography and Environmental Protection. Institute of Geography and Spatial Organization PAS

Projects co-financed by:

European Union. European Regional Development Fund ; Programme Innovative Economy, 2010-2014, Priority Axis 2. R&D infrastructure






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