Soybean (Glycine max (L.) Merrill) intercropping with reduced nitrogen input influences rhizosphere phosphorus dynamics and phosphorus acquisition of sugarcane (Saccharum officinarum)
dc.contributor.author | Tian, J | |
dc.contributor.author | Tang, M | |
dc.contributor.author | Xu, X | |
dc.contributor.author | Luo, S | |
dc.contributor.author | Condron, LM | |
dc.contributor.author | Lambers, H | |
dc.contributor.author | Cai, K | |
dc.contributor.author | Wang, J | |
dc.date.accessioned | 2020-12-08T21:48:40Z | |
dc.date.available | 2020-06-20 | |
dc.date.issued | 2020-10 | |
dc.date.submitted | 2020-06-11 | |
dc.description.abstract | Reducing nitrogen (N) input can improve crop productivity in cereal-legume intercrops, but the impact on phosphorus (P) acquisition is unclear. A 10-year (2009–2018) field experiment was conducted to quantify how P acquisition by sugarcane (Saccharum officinarum) was affected by intercropping with soybean (Glycine max (L.) Merrill at 1:1 and 1:2) with two N inputs (300 kg ha–¹ [reduced], 525 kg ha–¹ [conventional]). Nitrogen was supplied only to the sugarcane crop, and soybean received no N. There was a significantly higher land-equivalent ratio of sugarcane-soybean intercropping than of the sole cropping, and the intercropping advantage was more pronounced under reduced N input which can be associated with high degree of complementary N use. Furthermore, soybean intercropping with reduced N input stimulated acid phosphomonoesterase activity and depleted organic P in the rhizosphere of sugarcane, resulting in increased sugarcane stem P concentration and system P-use efficiency. The interspecific facilitation of P acquisition could be associated with the increased symbiotic N₂ fixation in soybean, soil microbial biomass and activity under reduced N input. In conclusion, soybean intercropping with reduced N input to sugarcane enhanced rhizosphere enzymatic organic P transformation and sugarcane P acquisition, which may contribute to maintaining a sustainable sugarcane production under low N supply. The findings advance our understanding of interactions between N and P cycling and provide new evidence for the value of cereal-legume intercrops in reducing fertilizer input. | |
dc.format.extent | pp.1063-1075 | |
dc.identifier.doi | 10.1007/s00374-020-01484-7 | |
dc.identifier.eissn | 1432-0789 | |
dc.identifier.issn | 0178-2762 | |
dc.identifier.uri | https://hdl.handle.net/10182/13136 | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Springer on behalf of International Society of Soil Science | |
dc.relation | The original publication is available from Springer on behalf of International Society of Soil Science - https://doi.org/10.1007/s00374-020-01484-7 - http://dx.doi.org/10.1007/s00374-020-01484-7 | |
dc.relation.isPartOf | Biology and Fertility of Soils | |
dc.relation.uri | https://doi.org/10.1007/s00374-020-01484-7 | |
dc.rights | © Springer-Verlag GmbH Germany, part of Springer Nature 2020 | |
dc.subject | cereal-legume intercrop | |
dc.subject | phosphorus fractionation | |
dc.subject | acid phosphomonoesterase | |
dc.subject | phosphorus-use efficiency | |
dc.subject | low nitrogen application | |
dc.title | Soybean (Glycine max (L.) Merrill) intercropping with reduced nitrogen input influences rhizosphere phosphorus dynamics and phosphorus acquisition of sugarcane (Saccharum officinarum) | |
dc.type | Journal Article | |
lu.contributor.unit | Lincoln University | |
lu.contributor.unit | Faculty of Agriculture and Life Sciences | |
lu.contributor.unit | Department of Soil and Physical Sciences | |
lu.identifier.orcid | 0000-0002-3082-994X | |
pubs.issue | 7 | |
pubs.publication-status | Published | |
pubs.publisher-url | http://dx.doi.org/10.1007/s00374-020-01484-7 | |
pubs.volume | 56 |