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| Content Provider | Springer Nature Link |
|---|---|
| Author | Espisa, Daniel Sale, Peter Tang, Caixian |
| Copyright Year | 2017 |
| Abstract | Legume break crops provide a series of agronomic benefits to the following wheat crop in a rotation. Phosphorus-efficient break-crop plants can mobilise P from non-labile pools in the soil and this could be made available to wheat plants after the decomposition of the break-crop residues. This study aimed to examine the contribution to P uptake by wheat plants, of residues from five different break crops with different maturities and C:P ratios.Wheat plants were grown in a soil that varied in P status (Olsen P 7 to 30 mg kg$^{−1}$) and was labelled with $^{32}$P and amended with crop residues at a rate of 1% (w/w). Soil and plant samples were taken after 42 days of plant growth. Wheat plants were analysed for growth and P uptake. Soil samples were analysed for P availability and microbial P content.Wheat growth was suppressed with the addition of residues to the soil, with P uptake closely related to shoot growth. The residue-P contribution ranged between 5 and 52% of the P taken up by wheat plants. The amount of P transferred from the residues to the wheat ranged between 6 and 15% of total residue P. Microbial P increased 2-fold in the low- and moderate-P soils with the addition of residues.The transfer of P from break-crop residues to the wheat plant (as % total residue P) is small in the short term regardless of residue quality and soil P status but incorporating residues increased the microbial P uptake in low- and moderate-P soils. |
| Starting Page | 361 |
| Ending Page | 375 |
| Page Count | 15 |
| File Format | |
| ISSN | 0032079X |
| Journal | Plant and Soil |
| Volume Number | 416 |
| Issue Number | 1-2 |
| e-ISSN | 15735036 |
| Language | English |
| Publisher | Springer International Publishing |
| Publisher Date | 2017-03-16 |
| Publisher Place | Cham |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | $^{32}$P isotope Break crops C-to-P ratio Crop rotation Microbial P Plant P uptake Plant Sciences Soil Science & Conservation Plant Physiology Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Soil Science Plant Science |
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