engleski

Phosphorus availability in hydromorphic soils of Eastern Croatia

Phosphorus (P) availability was tested on hydromorphic soils situated in Sava valley. In our study we analyzed 480 soil profiles covering an area of 31227 ha. Plant available P was determined by the Ammonium-Lactate method. P availability in the surface layer (0-30 cm) is very low P (until 5 mg P2O5 100 g-1 of soil) in about 30% of the tested agricultural land (9440 ha), next 32% (9897 ha) are in the range low P availability (from 5.1 to 10 mg), while only 17% (5445 ha) has good or very good P availability (above 20 mg). Especially a high frequency of low P availability was found in vertic gley, amphygley and hypogley soils (total 8680 ha or 28% tested agricultural land).

phosphorus availability ; soil test ; hydromorphic soil ; Eastern Croatia ; ameliorative fertilization ; field experiments

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