Rose, T.J. and Julia, C.C. and Shepherd, M. and et al, . (2016) Faba bean is less susceptible to fertiliser N impacts on biological N2 fixation than chickpea in monoculture and intercropping systems. Biology and Fertility of Soils, 52. pp. 271-276.
![[img]](http://eprints.icrisat.ac.in/style/images/fileicons/application_pdf.png) |
PDF
- Published Version
Restricted to ICRISAT researchers only |
Abstract
High nitrogen (N) fertiliser costs and sustainability concerns have increased interest in cultivating legume crops in the inter-row in coppiced plantation crops. Supplemental N fertiliser applications are likely needed in such systems because the availability of legume-derived N may not match peak tree N demand, but this added N fertiliser will likely suppress biological N2 fixation (%BNF) in the inter-row legumes. We hypothesised that some legume species may be less susceptible to N fertiliser-induced suppression of %BNF and are therefore better suited as legume inter-row crops. We compared the impact of four rates of N fertiliser (0, 50, 100 and 150 kg N ha−1) on %BNF in faba bean (Vicia faba) and chickpea (Cicer arietinum) when cultivated as inter-row legume crops in an established Melaleuca alternifolia plantation and as a monoculture in a glasshouse pots trial. N2 fixation was not completely suppressed in either species at 150 kg N ha−1, with around 40 %BNF maintained in faba bean in the field and glasshouse and around 35 %BNF and 23 %BNF maintained in chickpea in the field and glasshouse, respectively. Faba bean had significantly higher %BNF than chickpea at 100 kg N ha−1 when intercropped in the field, and at 100 and 150 kg N ha−1 in the glasshouse, associated with a higher shoot N demand in faba bean. The results suggest that where soil conditions are suitable for either species, faba bean is more suitable as a green manure intercrop than chickpea when supplementary N fertiliser additions are required.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Coppiced tree crops, Inter-row legumes, 15N natural abundance, Nitrogen cycle, Melaleuca |
| Author Affiliation: | Southern Cross Plant Science, Southern Cross University, PO Box 157, Lismore, NSW 2480, Australia |
| Subjects: | Plant Protection |
| Divisions: | Chickpea |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 10 Jan 2017 06:48 |
| Last Modified: | 10 Jan 2017 06:48 |
| Official URL: | http://dx.doi.org/10.1007/s00374-015-1062-8 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/14655 |
Actions (login required)
 |
View Item |
