Native soil and fresh fertilizer phosphorus uptake as affected by rate of application and P fertilizers
| Autor: | J. C. Fardeau, Ch. Morel |
|---|---|
| Přispěvatelé: | Compagnie Française de l'Azote (COFAZ), Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Jazyk: | angličtina |
| Rok vydání: | 1989 |
| Předmět: |
0106 biological sciences
[SDV]Life Sciences [q-bio] Soil Science chemistry.chemical_element Plant Science engineering.material 01 natural sciences Lolium perenne chemistry.chemical_compound Nutrient Animal science Poaceae 2. Zero hunger biology Phosphorus Plant physiology 04 agricultural and veterinary sciences 15. Life on land biology.organism_classification Phosphate 6. Clean water chemistry Phosphorite Agronomy 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Fertilizer 010606 plant biology & botany |
| Zdroj: | Plant and Soil Plant and Soil, Springer Verlag, 1989, 115 (1), pp.123-128. ⟨10.1007/BF02220702⟩ Plant and Soil, 1989, 115 (1), pp.123-128. ⟨10.1007/BF02220702⟩ |
| ISSN: | 0032-079X 1573-5036 |
| DOI: | 10.1007/BF02220702⟩ |
| Popis: | International audience; 32P labelled fertilizers were used to measure native soil and fresh fertilizer phosphorus uptake byLolium perenne L. in greenhouse experiments. The P source evaluation was carried out for multiple rates of application for a standard P fertilizer (DAP) on low and medium soil P levels and for North Carolina rock phosphate (RP) at the medium soil P level only. At the low soil P level, the native P uptake increase was independent of P-DAP applied, and represented 19% of the nil P uptake. At the medium soil P level, the variability of the native soil as a nutrient P source depended on the phosphate fertilizer applied, and the rate of application. Consequently the amount of total P uptake could conceal differences in P fertilizer evaluations as the nutrient P source. Fresh P uptake increased linearly with the rates of P applied as standard or tested P fertilizer. The comparison of various P sources by means of fresh P uptake ratio (i.e. fresh P uptake from tested phosphate divided by fresh P uptake from standard phosphate) was independent of the rate of application. It was therefore suggested that various phosphorus sources be evaluated by measuring the fresh P uptake for a single rate of application. |
| Databáze: | OpenAIRE |
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