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Wheat yields variability in Poland at NUTS 2 level in context of production risk

100%

Kobus P.

Problemy Rolnictwa Światowego

2009

vol. 06(21)

The paper presents an analysis of the wheat yields variability in voivodeships of Poland. The main aim of the study is to present several possible indicators for the crop variability in the context of production risk. It is found that ignoring the long-term yield trends leads to a serious overestimation of production risk.

Modelling wheat yields variability in Polish voivodships

80%

Kobus P.

Problemy Rolnictwa Światowego

2010

vol. 10(25)

issue 3

The paper presents an analysis of wheat yields variability in the voivodeships of Poland. The main aim of the study was to find out what are the statistical relationships between the wheat yield variability and the following factors: arable area, size of wheat production area, share of arable land used for wheat production, land quality and average yield. For that purpose a multiple linear regression was applied. It was found out that the detected spatial autocorrelation of wheat yields variability measured by standard deviations can be explained in 75% by the fitted model. Two of the considered variables showed a significant negative effect on this variability: the logarithm of arable area and the land quality, while the other two: the average wheat yield and the wheat production area displayed a significant positive effect on the variability. The effect of share of arable land used for wheat production itself was not significant.

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2 Problemy Rolnictwa Światowego

1 2010

1 2009

2 Kobus P.

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Wheat yields variability in Poland at NUTS 2 level in context of production risk

Modelling wheat yields variability in Polish voivodships