A probability distribution for crop yields in Poland

Auteur(s) et Affiliation(s)

GÓRSKI, T.

Dep. of Agrometeorology and Applied Informatics, Inst. of Soil Science and Plant Cultivation, Pulawy, Pologne

Description :
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. A fairly good approximation of the probability distribution for actual yields may be obtained using the log-normal distribution with an inverted abscissa.

Type de document :
Article de périodique

Source :
Geographia polonica, issn : 0016-7282, 2009, vol. 82, n°. 1, p. 61-67, nombre de pages : 7, Références bibliographiques : 17 ref.

Date :
2009

Editeur :
Pays édition : Pologne, Warszawa, Państwowe Wydawnictwo Naukowe

Langue :
Anglais