TheImpact of changing moisture conditions on short-term P availability in weathered soils (Record no. 71173)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 02072nam a2200217Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Delonge Marcia |
| 245 #0 - TITLE STATEMENT | |
| Title | TheImpact of changing moisture conditions on short-term P availability in weathered soils |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Plant and Soil |
| Year of publication | 2013 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 201-209 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Background and Aims: Bioavailable phosphorus (P) represents a primary constraint on productivity in many ecosystems on highly-weathered soils. Soil moisture can be important to determining P bioavailability and net primary productivity in these systems. However, hydrologic controls on P availability remain poorly understood. Methods: We used resins (anion-exchange membranes) to quantify the response of liable P, an estimate of bioavailable P, to soil moisture conditions in two highly weathered soils (rendzina, ultison). The resins were either incubated in soil or shaken with a soil water slurry. Results: Resin incubations in aerobic soil effectively quantified P in soils under changing moisture conditions, extracting significant amounts of labile P while avoiding the disturbance impossed by slurries. Wetting field-moist soils resulted in pulsed labile P, with lagged peaks occurring days after the largest moisture additions. Re-wetting air-dried soils enhanced labile P immediately, with the largest amounts observed at the highest moisture levels; labile P steadily declined following the moisture addition. Conclusion: Soil moisture levels and history strongly impacted labile P, indicating the importance of both variables when interpreting labile P measurements. These results also suggest that P availability is linked to both the amount and timing of rainfall, with implications for plant productivity in regions exposed to changing moisture regimes. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Anionexchange resin membranes |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Bioavailable phosphorus |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Rendzina |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Soin moisture |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Ultisol |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Lawrence Deborah |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Odorico DPaolo |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Vandecar LKaran |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Journals |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Serial Enumeration / chronology | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Journals | RRII Library | RRII Library | Agronomy | 01/01/2021 | Volume 365, Issue 02-Jan | Journals |