Management effects on near-surface soil properties in a temperate corn-soybean cropping system

Moore, Eric Britt

doi:10.31274/etd-20210609-125

Cited by 1 publication

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Volumetric water contents at saturation were extracted directly from the measured values. Volumetric water contents at field capacity were estimated as the measured volumetric water content at a matric potential of −100 cmH 2 O (Moore, 2021). We used this approximation because the matric potential that approximates field capacity depends on the depth to the water table.…”

Section: Discussionmentioning

confidence: 99%

“…Two trials were on commercial farm fields, and two trials were part of a UUSDA research experiment. We assessed the effects of long-term cover cropping on soil water content at saturation, soil water content at matric potentials approximating field capacity (−100 cmH 2 O; Moore, 2021), and the soil water retention curve. To complement and contextualize these data, we also measured soil texture, soil organic matter, and bulk densities of the soil samples.…”

Section: Propose a Causal Model Connecting Ccs To Changes In Soilmentioning

confidence: 99%

“…The causal model was built using literature relevant to midwestern systems, and when applicable was limited to evidence drawn from research conducted with a cereal rye cover crop (Supplemental material S5). The model was simplified to exclude the effects of soil erosion, soil texture, tillage, and landscape position, which are all factors that could potentially influence how soil responds to cover cropping (Moore, 2021). Rather, we present this simple casusal model to provide a base from which to build.…”

Section: Causal Modelmentioning

confidence: 99%

See 2 more Smart Citations

Site‐specific effects of winter cover crops on soil water storage

Nichols

Moore

Gailans

et al. 2022

Agrosystems Geosci & Env

View full text Add to dashboard Cite

Addition of an overwintering cereal rye (Secale cereale L.) cover crop (CC) to midwestern maize (Zea mays L.)-based systems offers several environmental benefits, but the long-term effects of this practice on soil hydrological properties are not well understood. We utilized four long-term (10+ yr) trials (two commercial fields, two research plots) in Iowa that included a replicated winter rye CC and no-cover treatment in no-till maize/soybean [Glycine max (L.) Merr.] systems. We took intact 7.62cm diam. soil samples from a 10-to-18-cm depth shortly after cash crop planting in the spring. We measured the soil water retention curve using matric potentials ranging from saturation to -500 cmH 2 O. In addition, we measured organic matter, textural composition, and bulk densities of the soil samples. At the depth sampled, CCs did not meaningfully affect bulk density, water contents at saturation, or air-entry potentials at any trial, nor increase the percentage of macropores. At two trials, soil water content at field capacity (-100 cmH 2 O) in the CC treatments was 2.5 vol% (SE: 1.2%; commercial field) and 2.4 vol% (SE: 1.3%; research plot) higher compared with the no-cover treatments. This increase could meaningfully reduce the amount of water drained from a field after a saturating rain and should be considered when assessing CC impacts on landscape hydrology. The presence or absence of a CC effect on field capacity was not related to CC aboveground biomass production, previous cash crop, or soil texture at the trial sites. Based on our results, a causal model, and previous literature we hypothesize CC root characteristics are key to understanding variable effects of CCs on soil water storage. Our results indicate it is possible for CCs to meaningfully affect soil water storage, but more research is needed on the mechanisms by which these changes occur. INTRODUCTIONAddition of an overwintering cereal rye (Secale cereale L.) cover crop (CC) to midwestern maize (Zea mays L.)based systems potentially offers several environmental benefits including reduced soil erosion and nutrient pollution Abbreviations: CC, cover crop.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Propose a Causal Model Connecting Ccs To Changes In Soilmentioning

confidence: 99%

Section: Causal Modelmentioning

confidence: 99%

See 1 more Smart Citation