Final published version, 573 KB, PDF document
Available under license: CC BY: Creative Commons Attribution 4.0 International License
Final published version
Licence: CC BY: Creative Commons Attribution 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Inter- and intra-species intercropping of barley cultivars and legume species, as affected by soil phosphorus availability
AU - Darch, Tegan
AU - Giles, Courtney D.
AU - Blackwell, Martin S. A.
AU - George, Timothy S.
AU - Brown, Lawrie K.
AU - Blackburn, Daniel
AU - Shand, Charles A.
AU - Stutter, Marc Ian
AU - Lumsdon, David G.
AU - Mezeli, Malika
AU - Wendler, Renate
AU - Zhang, Hao
AU - Wearing, Catherine Louise
AU - Cooper, Patricia
AU - Haygarth, Philip Matthew
PY - 2018/6
Y1 - 2018/6
N2 - Aims Intercropping can improve plant yields and soil phosphorus (P) use efficiency. This studycompares inter- and intra-species intercropping, and determines whether P uptake and shoot biomass accumulation in intercrops are affected by soil P availability.Methods Four barley cultivars (Hordeum vulgare L.) and three legume species (Trifolium subterreneum, Ornithopus sativus and Medicago truncatula) were selected on the basis of their contrasting root exudation and morphological responses to P deficiency. Monoculturesand barley-barley and barley-legume intercrops were grown for 6 weeks in a pot trial at very limiting, slightly limiting and excess available soil P. Aboveground biomass and shoot P were measured.Results Barley-legume intercrops had 10–70% greater P accumulation and 0–40% greater biomassthan monocultures, with the greatest gains occurring at or below the sub-critical P requirement forbarley. No benefit of barley-barley intercropping was observed. The plant combination had no significant effect on biomass and P uptake observed in intercropped treatments.Conclusions Barley-legume intercropping shows promise for sustainable production systems, especiallyat low soil P. Gains in biomass and P uptake come from inter- rather than intra-speciesintercropping, indicating that plant diversity resulted in decreased competition between plants for P.
AB - Aims Intercropping can improve plant yields and soil phosphorus (P) use efficiency. This studycompares inter- and intra-species intercropping, and determines whether P uptake and shoot biomass accumulation in intercrops are affected by soil P availability.Methods Four barley cultivars (Hordeum vulgare L.) and three legume species (Trifolium subterreneum, Ornithopus sativus and Medicago truncatula) were selected on the basis of their contrasting root exudation and morphological responses to P deficiency. Monoculturesand barley-barley and barley-legume intercrops were grown for 6 weeks in a pot trial at very limiting, slightly limiting and excess available soil P. Aboveground biomass and shoot P were measured.Results Barley-legume intercrops had 10–70% greater P accumulation and 0–40% greater biomassthan monocultures, with the greatest gains occurring at or below the sub-critical P requirement forbarley. No benefit of barley-barley intercropping was observed. The plant combination had no significant effect on biomass and P uptake observed in intercropped treatments.Conclusions Barley-legume intercropping shows promise for sustainable production systems, especiallyat low soil P. Gains in biomass and P uptake come from inter- rather than intra-speciesintercropping, indicating that plant diversity resulted in decreased competition between plants for P.
KW - Legume
KW - Barley
KW - Phosphorus availability
KW - Plant diversity
KW - Yield
KW - Phosphorus uptake
U2 - 10.1007/s11104-017-3365-z
DO - 10.1007/s11104-017-3365-z
M3 - Journal article
VL - 427
SP - 125
EP - 138
JO - Plant and Soil
JF - Plant and Soil
SN - 0032-079X
IS - 1-2
ER -