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Agricultural characteristics... – S. Krasowicz, T. Górski, K. Budzyńska, J. Kopiński
Table 2.10 Present (average from the years 2001-2010) and potential1) cereal yields in Poland and yield potential utilization2) (source: own study based on GUS, 2001-2011 data) Voivodeship DLN KUJ LUB LUS LOD MLP MAZ OPL PDK PDL POM SLS SWT WAM WLP ZAP Poland
Actual yield [dt·ha-1]
Potential yield1) [dt·ha-1]
Utilization2) [%]
41.2 34.6 29.2 30.2 27.8 31.0 26.5 46.6 30.1 25.9 33.0 33.9 26.6 32.3 34.4 34.8 32.0
60.0 52.8 57.0 49.2 48.6 54.0 46.8 62.4 56.4 45.0 51.6 50.4 54.0 52.8 49.2 53.4 51.6
68.7 65.5 51.2 61.5 57.2 57.3 56.6 74.7 53.4 57.5 63.9 67.2 49.3 61.3 70.0 65.1 62.1
1)
potential yields obtained in experiments on comparing the productivity of agricultural soil suitability complexes carried out in the 1980’s (increased by 20%); yields in the voivodeships include the percentage of soils classified as agricultural soil suitability complexes, 2) the ratio of the actual yield to the potential yield
Cereals yield potential, calculated on the basis of agricultural soil suitability complexes, is realized in Poland at the level of approximately 62%. Realization of this potential to an extent clearly higher than the average for the country occurs in the voivodeships of Kujawsko-Pomorskie, Opolskie, Śląskie, and Wielkopolskie. It should be emphasized that the degree of realization of yield potential is relatively independent of the size of yield potential. The size of actual cereal yields depends on a number of factors both natural and agricultural, as indicated by the cluster analysis (Table 2.11).