Claim · model-written summary
Organic carbon inputs did not account for soil quality indicator abundance or distribution.
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic C inputs, which were 58% and 36% greater in the 3-year rotation than in the 4-year and 2-year rotations, respectively, did not account for differences in SQI abundance or distribution.”
e1“where grain yields of 3-year and 4-year LEI rotations have matched or exceeded yield achieved by a 2-year maize (Zea mays L.) and soybean (Glycine max L.) rotation.”
Title
Patricia A. Lazicki; Matt Liebman; Michelle M. Wander PLoS ONE 2016. doi:10.1371/journal.pone.0164209
Other claims from this paper (12)
- Intervention effect LEI rotations matched or exceeded conventional rotation grain yield.
- Intervention effect POM-C and PMN stocks were greater and more evenly distributed in LEI systems.
- Intervention effect Organic carbon inputs were 58% greater in the 3-year than 4-year rotation.
- Intervention effect Organic carbon inputs were 36% greater in the 3-year than 2-year rotation.
- Observation Soil quality indicators did not vary with crop phase or date.
- Observation Biochemical soil quality indicators were more stratified in conventional soils.
- Observation Surface POM-C and PMN were similar across three systems.
- Observation Conventional subsurface POM-C and PMN stocks were less than half LEI stocks.
- Observation Maize root length density was concentrated in the top 10 cm of conventional plots.
- Observation Maize root length density was evenly distributed between depths in LEI systems.
- Intervention effect Organic amendment and manure incorporation extended the LEI rhizosphere.
- Observation The authors interpret resource distribution and abundance as helping LEI systems sustain comparable or greater yields with fewer inputs.