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001-es BibID:	BIBFORM005145
Első szerző:	Lazányi János (mezőgazdász)
Cím:	Calcium chloride (0.01m) extractable phosphorus in the treatments of westsik's crop rotation experiment / János Lazányi, Jakab Loch
Dátum:	2008
Megjegyzések:	Phosphorus is an essential nutrient, which is commonly applied to agricultural fields to increase crop yields. The accumulation of phosphorus in soils has become a major concern which represents a potential risk for contamination of surface and ground water. The main processes for phosphorus losses from agricultural fields in Nyírség region are deflation, surface runoff and subsurface leaching, the amount and processes behind these losses are still unknown. Phosphorus accumulations were studied in the Westsik's crop rotation experiment to evaluate how the treatments affect phosphorus content of cultivated and dipper 40-60 soil layer. Organic and inorganic phosphorus in 0.01 M calcium chloride (CaCl2) extracts were studied in the potato field of Westsik's crop rotation experiment. Organic phosphorus proved to be an important part of total phosphorus in soil solution of the crop rotation experiment, which models various possible methods of nutrient management (fallow, straw, farmyard and green manure). The role of this fraction as a phosphorus source for crops, its transfer from soil to plant and potential risk for contamination of surface and ground water is still unclear.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok előadáskivonat calcium chloride (CaCl2) extracts organic and inorganic phosphorus
Megjelenés:	International Symposium "Risk Factors for Environment and Food Safety" : November 14-15, 2008. Oradea, Romania / ed. Vasile Bara. - p. 144-152.
További szerzők:	Loch Jakab (1932-) (kémikus)
Internet cím:	elektronikus változat
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