Baza Publikacji Pracowników Politechniki Lubelskiej

Status:
Autorzy:	Włodarczyk Teresa, Stępniewski Witold, Brzezińska Małgorzata, Przywara Grażyna
Rok wydania:	2008
Wersja dokumentu:	Drukowana \| Elektroniczna
Język:	angielski
Numer czasopisma:	4
Wolumen/Tom:	22
Strony:	371 - 375
Efekt badań statutowych	NIE
Materiał konferencyjny:	NIE
Publikacja OA:	NIE
Abstrakty:	angielski
	A pot experiment with triticale cv. Jago was conducted to test the effect of oxygen deficiency on the content of available macroelements. Oxygen stress (flooded conditions) distinctly conserved all the chemical species content but only at lowest density of soil combined with flooded conditions the decline of uptake of N-NH4+ and P and K was significant. A significant increase in (p <0.001) uptake of the investigated elements occurred in higher vałues of air filled porosity (Eg). The most sensitive element with respect to Eg value changes was phosphorus, the least one was potassium. The relation between redox potential (Eh) on NH4+ NO3-, P and K uptake was positive in all the investigated cases. The highest relation was observed in P uptake. The parameter of oxygen availability in the soil - ODR (oxygen diffiision ratę) showed a typical tendency for changes under differentiated air-water conditions. The critical ODR value (about 35 ug m-2 s-1) for uptake of all the studied elements was observed under the investigated conditions. Statistical analysis showed a significant relation between oxygen diffiision ratę and NH4, P and K uptake.

Impact of different aeration conditions on the content of extractable nutrients in soil