Uptake of phosphate from soils and fertilizers as affected by soil P availability and solubility of phosphorus fertilizers
| Autor: | J. C. Fardeau, Ch. Morel |
|---|---|
| Přispěvatelé: | Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Jazyk: | angličtina |
| Rok vydání: | 1990 |
| Předmět: |
0106 biological sciences
biology Phosphorus [SDV]Life Sciences [q-bio] Soil Science Greenhouse chemistry.chemical_element 04 agricultural and veterinary sciences Plant Science engineering.material Phosphate biology.organism_classification 01 natural sciences Lolium perenne chemistry.chemical_compound Agronomy chemistry Soil water 040103 agronomy & agriculture Soil phosphorus engineering 0401 agriculture forestry and fisheries Fertilizer Solubility 010606 plant biology & botany |
| Zdroj: | Plant and Soil Plant and Soil, Springer Verlag, 1990, 121 (2), pp.217-224. ⟨10.1007/BF00012315⟩ Plant and Soil, 1990, 121 (2), pp.217-224. ⟨10.1007/BF00012315⟩ |
| ISSN: | 0032-079X 1573-5036 |
| DOI: | 10.1007/BF00012315⟩ |
| Popis: | International audience; Fertilizers labelled with 32P were used to measure amounts of phosphorus, Ps and PF, taken up by Lolium perenne from available soil P and from P fertilizer respectively, when applied at a rate of 66 mg P·(kg soil−1) in greenhouse experiments. The quantity Ps of phosphorus taken up from soil in the presence of P fertilizer was compared to the quantity Po taken up from soil without P fertilizer. The quantity (Ps−Po) is positive for low Po values, i.e. in soils poor in available phosphorus, but is negative for high Po values indicating that an input of P fertilizer can induce a decrease in the utilization of available soil phosphorus. Moreover, for a given soil, the quantity (Ps−Po) depends on the chemical form of the fertilizer. The standard method of evaluation of P fertilizer efficiency is based on the assumption that Ps=Po, but Ps can differ from Po. This result can explain the contradictory data published from field experiments about the efficiency of the various P fertilizers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink