Claim · model-written summary
At season end, crops did not differ in soil nitrate.
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Verbatim
e0“At the end of growth season, however, there were no crop effects on soil nitrate levels”
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 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 conclude that high biomass chickpea and fababean crops will not spare significant soil nitrogen at the studied initial nitrate levels.
- Recommendation The authors suggest nitrate sparing may occur at higher soil nitrate or with smaller crops, especially fababean.