User profiles for Kenneth M. Wacha

Kenneth M. Wacha

USDA-ARS
Verified email at usda.gov
Cited by 468

From soilscapes to landscapes: A landscape‐oriented approach to simulate soil organic carbon dynamics in intensively managed landscapes

AN Papanicolaou, KM Wacha… - Journal of …, 2015 - Wiley Online Library
Most available biogeochemical models focus within a soil profile and cannot adequately
resolve contributions of the lighter size fractions of organic rich soils for enrichment ratio (ER) …

Tillage-induced surface soil roughness controls the chemistry and physics of eroded particles at early erosion stage

…, S Singh, ANT Papanicolaou, KM Wacha… - Soil and Tillage …, 2021 - Elsevier
Intensive row crop agriculture on loess mantled hillslopes in the upper Midwest, USA,
accelerates soil erosion and the loss of organic matter by increasing soil aggregate breakdown, …

Cropping pattern changes diminish agroecosystem services in North and South Dakota, USA

…, C Dold, EJ Kistner‐Thomas, KM Wacha - Agronomy …, 2020 - Wiley Online Library
In the past several decades, North and South Dakota have experienced increased agricultural
expansion and crop rotation simplification, namely an increase in corn (Zea mays L.)– …

Control of tillage disturbance on the chemistry and proportion of raindrop-liberated particles from soil aggregates

…, MN Hughes, Y Tong, ANT Papanicolaou, KM Wacha… - Geoderma, 2018 - Elsevier
In most agricultural systems, the raindrop-induced breakdown of soil aggregates is the
initial process of surface soil erosion and redistribution of soil organic matter. The …

[HTML][HTML] The role of hydraulic connectivity and management on soil aggregate size and stability in the Clear Creek Watershed, Iowa

KM Wacha, ANT Papanicolaou, CP Giannopoulos… - Geosciences, 2018 - mdpi.com
The role of tillage practices on soil aggregate properties has been mainly addressed at the
pedon scale (ie, soilscape scale) by treating landscape elements as disconnected. However, …

Flow resistance interactions on hillslopes with heterogeneous attributes: Effects on runoff hydrograph characteristics

…, JR Frankenberger, KM Wacha - Water resources …, 2018 - Wiley Online Library
An improved modeling framework for capturing the effects of space and time‐variant resistance
to overland flow is developed for intensively managed landscapes. The framework builds …

Quantifying the changes of soil surface microroughness due to rainfall impact on a smooth surface

…, KM Wacha, CG Wilson, M Elhakeem - Nonlinear Processes …, 2017 - npg.copernicus.org
This study examines the rainfall-induced change in soil microroughness of a bare smooth
soil surface in an agricultural field. The majority of soil microroughness studies have focused …

Impact of management practices on carbon and water fluxes in corn–soybean rotations

…, TJ Sauer, TB Moorman, KM Wacha - Agrosystems …, 2019 - Wiley Online Library
… Aspirational corn GPP was lower than conventional with 1285 and 1405 g C m −2 , and
no difference in soybean with 750 and 742 g C m −2 . Linear regression (p < 0.05) showed …

The impact of tillage row orientation on physical and chemical sediment enrichment

KM Wacha, ANT Papanicolaou… - Agrosystems …, 2020 - Wiley Online Library
This study aimed to better understand how tillage row orientation with respect to dominant
flow‐pathway along hillslope impacts runoff and the transport of different sediment size …

A new dynamic wetness index (DWI) predicts soil moisture persistence and correlates with key indicators of surface soil geochemistry

…, A Stumpf, T Hou, ANT Papanicolaou, KM Wacha… - Geoderma, 2020 - Elsevier
Commonly, the topographic influence on soil hydrology is calculated as a Topographic
Wetness Index (TWI), which often correlates with surface soil properties, such as carbon and …