Claim · model-written summary
The authors conclude that high biomass chickpea and fababean crops will not spare significant soil nitrogen at the studied initial nitrate levels.
- Taxon
- fababean and chickpea
Cicer arietinum
Vicia fabae0 - Outcome
- will not spare significant amounts of soil Ne0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under the starting soil nitrate levels in this experiment, levels typical of many cropping soils in the region, high-biomass fababean and chickpea crops will not spare significant amounts of soil N”
Title
J. E. Turpin; D. F. Herridge; M. J. Robertson Australian Journal of Agricultural Research 2002. doi:10.1071/ar01136
Other claims from this paper (15)
- Intervention effect Chickpea grain yield was unaffected by fertilizer nitrogen supply and ranged from 2.0–2.4 t/ha.
- Intervention effect Fababean grain yield was unaffected by fertilizer nitrogen supply and ranged from 3.7–4.6 t/ha.
- Intervention effect Wheat grain yield rose from 1.6 t/ha at 0N to 4.8 t/ha at 100N.
- Observation Fababean fixed more nitrogen than chickpea, with ranges of 209–275 and 146–214 kg/ha, respectively.
- Observation Fababean had 69–88% nitrogen derived from fixation.
- Observation Chickpea had 64–85% nitrogen derived from fixation.
- Observation Under high early soil nitrogen, fababean depended more on fixation than chickpea, 45% versus 12%.
- Observation Under high early soil nitrogen, fababean fixed more nitrogen than chickpea, 57 versus 16 kg/ha.
- Observation Under high early soil nitrogen, fababean used less soil nitrogen than chickpea, 69 versus 118 kg/ha.
- Observation Early soil nitrate was significantly higher under fababean than chickpea or wheat.
- Observation At season end, crops did not differ in soil nitrate.
- Observation The chickpea soil nitrogen balance was positive, 80–135 kg N/ha.
- Observation The fababean soil nitrogen balance was positive, 79–157 kg N/ha.
- Observation The wheat soil nitrogen balance was negative, –20 to –66 kg N/ha.
- Recommendation The authors suggest nitrate sparing may occur at higher soil nitrate or with smaller crops, especially fababean.