Next Article in Journal
Vegetation Degradation of Guanshan Grassland Suppresses the Microbial Biomass and Activity of Soil
Previous Article in Journal
Restoring the Unrestored: Strategies for Restoring Global Land during the UN Decade on Ecosystem Restoration (UN-DER)
Previous Article in Special Issue
The Effects of Management (Tillage, Fertilization, Plant Density) on Soybean Yield and Quality in a Three-Year Experiment under Transylvanian Plain Climate Conditions
Article

Effect of Previous Crop Roots on Soil Compaction in 2 Yr Rotations under a No-Tillage System

Northern Plains Agricultural Research Laboratory, ARS-USDA, 1500 N Central Avenue, Sidney, MT 59270, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Richard Cruse and Teodor Rusu
Land 2021, 10(2), 202; https://doi.org/10.3390/land10020202
Received: 23 December 2020 / Revised: 8 February 2021 / Accepted: 12 February 2021 / Published: 17 February 2021
(This article belongs to the Special Issue Soil Tillage Systems and Conservative Agriculture)
Compacted soils affect global crop productivity and environmental quality. A field study was conducted from 2014 to 2020 in the northern Great Plains, USA, to evaluate the effect of various rooting systems on soil compaction in 2 yr rotations of camelina (Camelina sativa L.), carinata (Brassica carinata A.) and a cover crop mix planted in place of fallow with durum (Triticum durum D.). The study was designed as a randomized complete block with three replications in a no-tillage system. The soil was classified as Dooley sandy loam (fine-loamy, mixed, superactive, frigid Typic Argiustolls) derived from glacial till parent material. Three measurements of soil penetration resistance (PR) were taken with a penetrometer to a depth of 0–30 cm within each plot. Soil moisture contents were determined using a TDR sensor at the time of PR measurements. Both measurements were monitored prior to planting in spring and after harvest. Initial PR results from spring 2014 showed that all plots had an average of 2.244 MPa between the 8–20 cm depth, due to a history of tillage and wheel traffic caused by various field activities. Covariance analysis indicated that soil PR was not significantly affected by crop type and moisture content. After one cycle of the 2 yr rotation, the 2016 measurements indicated that the compacted layer existed at the same initial depths. However, after two and three cycles, soil PR values were reduced to 1.480, 1.812, 1.775, 1.645 MPa in spring 2018 and 1.568, 1.581, 1.476, 1.458 MPa in 2020 under camelina, carinata, cover crop mix, and durum treatments, respectively. These findings indicate that previous cover crop roots could effectively improve soil compaction by penetrating the compacted layer, decompose over time and form voids and root channels. Although these results are novel and significant, further research is needed on different soils and under cover crops with different root systems to support our findings prior to making any conclusion. View Full-Text
Keywords: soil compaction; penetration resistance; biological method; root channels; bio-pores soil compaction; penetration resistance; biological method; root channels; bio-pores
Show Figures

Figure 1

MDPI and ACS Style

Jabro, J.D.; Allen, B.L.; Rand, T.; Dangi, S.R.; Campbell, J.W. Effect of Previous Crop Roots on Soil Compaction in 2 Yr Rotations under a No-Tillage System. Land 2021, 10, 202. https://doi.org/10.3390/land10020202

AMA Style

Jabro JD, Allen BL, Rand T, Dangi SR, Campbell JW. Effect of Previous Crop Roots on Soil Compaction in 2 Yr Rotations under a No-Tillage System. Land. 2021; 10(2):202. https://doi.org/10.3390/land10020202

Chicago/Turabian Style

Jabro, Jay D., Brett L. Allen, Tatyana Rand, Sadikshya R. Dangi, and Joshua W. Campbell. 2021. "Effect of Previous Crop Roots on Soil Compaction in 2 Yr Rotations under a No-Tillage System" Land 10, no. 2: 202. https://doi.org/10.3390/land10020202

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop