Biological P cycling is influenced by the form of P fertilizer in an Oxisol
| cg.contributor.affiliation | University of Illinois | en |
| cg.contributor.affiliation | University of California | en |
| cg.contributor.affiliation | International Center for Tropical Agriculture | en |
| cg.contributor.crp | Water, Land and Ecosystems | en |
| cg.coverage.country | Kenya | en |
| cg.coverage.iso3166-alpha2 | KE | en |
| cg.coverage.region | Africa | en |
| cg.coverage.region | Eastern Africa | en |
| cg.creator.identifier | Rolf Sommer: 0000-0001-7599-9056 | en |
| cg.howPublished | Formally Published | en |
| cg.identifier.doi | https://doi.org/10.1007/s00374-017-1226-9 | en |
| cg.isijournal | ISI Journal | en |
| cg.issn | 0178-2762 | en |
| cg.issue | 8 | en |
| cg.journal | Biology and Fertility of Soils | en |
| cg.reviewStatus | Peer Review | en |
| cg.subject.ciat | SOIL INFORMATION | en |
| cg.volume | 53 | en |
| dc.contributor.author | Margenot, Andrew J. | en |
| dc.contributor.author | Sommer, Rolf | en |
| dc.contributor.author | Mukalama, John | en |
| dc.contributor.author | Parikh, Sanjai J. | en |
| dc.date.accessioned | 2017-08-16T16:03:35Z | en |
| dc.date.available | 2017-08-16T16:03:35Z | en |
| dc.identifier.uri | https://hdl.handle.net/10568/83158 | |
| dc.title | Biological P cycling is influenced by the form of P fertilizer in an Oxisol | en |
| dcterms.abstract | Phosphate rock (PR) is an alternative fertilizer to increase the P content of P-deficient weathered soils. We evaluated the effects of fertilizer form on indicators of biological cycling of P using an on-farm trial on a Rhodic Kandiudox in western Kenya. Treatment plots were sampled after 13 cropping seasons of P applications as Minjingu phosphate rock (PR) or as triple super phosphate (TSP) (50 kg P ha−1 season−1), as well as a P-unfertilized control (0 kg P ha−1 season−1). Soils (0–15 and 15–30 cm) were analyzed for microbial biomass P (Pmic), activities of acid phosphomonoesterase, alkaline phosphomonoesterase, and phosphodiesterase, and sequentially extractable P fractions. P additions as Minjingu PR yielded 299% greater Pmic than TSP at 0–15-cm depth despite similar labile P concentrations in the two P fertilization treatments and stimulated activities of acid phosphomonoesterase (+39%). When added in the soluble form of TSP, a greater percentage of total soil P was present in mineral-bound forms (+33% Fe- and Al-associated P). Higher soil pH under Minjingu PR (pH 5.35) versus TSP (pH 5.02) and the P-unfertilized treatment (pH 4.69) at 0–15-cm depth reflected a liming effect of Minjingu PR. The form of P fertilizer can influence biological P cycling in weathered soils, potentially improving P availability under Minjingu PR relative to TSP via enhanced microbial biomass P and enzymatic drivers of P cycling. | en |
| dcterms.accessRights | Open Access | en |
| dcterms.available | 2017-08-11 | en |
| dcterms.bibliographicCitation | Margenot, Andrew J.; Sommer, Rolf; Mukalama, John; Parikh, Sanjai J.. 2017. Biological P cycling is influenced by the form of P fertilizer in an Oxisol . Biology and Fertility of Soils 53(8): 899-909. | en |
| dcterms.extent | p. 899-909 | en |
| dcterms.issued | 2017-11 | en |
| dcterms.language | en | en |
| dcterms.license | CC-BY-4.0 | en |
| dcterms.publisher | Springer | en |
| dcterms.subject | phosphorus | en |
| dcterms.subject | phosphatase | en |
| dcterms.subject | oxisol | en |
| dcterms.subject | soil | en |
| dcterms.subject | soil properties | en |
| dcterms.subject | soil fertility | en |
| dcterms.subject | fósforo | en |
| dcterms.subject | ferralsoles | en |
| dcterms.subject | microbiology | en |
| dcterms.type | Journal Article | en |
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