Comparative Effects of Rock Phosphates on Arbuscular Mycorrhizal Colonization ofTrifolium pratenseL

Autor:	Erzsébet Osztoics, Krisztina Rajkai‐Végh, Marianna Magyar, Péter Csathó, Julianna Csillag, Andras Lukacs, Tünde Takács
Rok vydání:	2006
Předmět:	biology Phosphorus Soil Science chemistry.chemical_element engineering.material biology.organism_classification Red Clover Colonisation Phosphorite chemistry Agronomy Loam engineering Colonization Mycorrhiza Agronomy and Crop Science Lime
Zdroj:	Communications in Soil Science and Plant Analysis. 37:2779-2790
ISSN:	1532-2416 0010-3624
DOI:	10.1080/00103620600832373
Popis:	The effect of five rock phosphates with different solubility (from Algeria, North Florida, North Carolina, Senegal, and Morocco) and that of single superphosphate (SSP) alone or with lime was investigated on the root colonization of red clover with indigenous arbuscular mycorrhizal fungi (AMF). In a pot experiment, the phosphorus (P) sources were applied at four rates (0, 100, 400, and 1600 mg total P2O5 kg−1 dry soil) to an acidic sandy soil (Nyirlugos) and to an acidic clay loam soil (Ragaly). The arbuscule content of the roots was more sensitive to various rock phosphates than the infection frequency. No mycorrhizal colonization of roots was observed in the Nyirlugos soil at the 1600 mg P2O5 kg−1 level of SSP or in either soil at the 1600 mg P2O5 kg−1 level of SSP+lime, indicating that the mycorrhizal dependency of the host was eliminated by the highest soluble P concentrations in the soil.
Databáze:	OpenAIRE
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