Effect of cover crops on hysteresis and anisotropy of soil hydraulic properties

Polich, Nicolás Guillermo; Lozano, Luis Alberto; Villarreal, Rafael; Salazar, María Paz; Bellora, Guido Lautaro; Barraco, C. Miriam Raquel; Soracco, Germán

doi:10.1016/j.geodrs.2022.e00586

Cited by 1 publication

(1 citation statement)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our study observed the highest 𝐷𝐴 values for NT, although minor differences (p>0.05) were observed between treatments. Similar results were reported by Polich et al [60] in a study that combined management practices with winter cover crops. The higher 𝐷𝐴 observed for NT under cover crops is associated with less soil disturbance, improved root development, and the accumulation of plant residues on the soil surface, which favors the appearance of pore clusters [50].…”

Section: Resultssupporting

confidence: 90%

X-ray Microtomography Analysis of Integrated Crop-Livestock Production Impact on Soil Pore Architecture

Gaspareto,

Pires

2024

Preprint

View full text Add to dashboard Cite

Integrated crop-livestock production (ILP) is an interesting alternative for more sustainable soil use. However, more studies are needed to analyze soil pore properties under ILP at the micrometer scale. Thus, this study proposes a detailed analysis of soil pore architecture at the micrometer scale in three dimensions. For this purpose, samples of an Oxisol under ILP subjected to minimum tillage (MT) and no-tillage (NT) with ryegrass as cover crop (C) and silage (S) were investigated. The soil micromorphological properties of the soil were analyzed using X-ray microtomography. The MT(C) system showed the highest values of porosity (c. 20.4%), connectivity (c. 32.8×103), volume (c. 26%), and number of pores (c. 32%) in a rod-like shape. On the other hand, the MT(S), NT(C), and NT(S) systems showed higher tortuosities (c. 2.2, c. 2.0, and c. 2.1) and lower pore connectivities (c. 8.3×103, c. 6.9×103, and c. 6.2×103), especially in S use. Ellipsoidal and rod-shaped pores predominated over spheroidal and disc-shaped pores in all treatments. The results of this study show that the use of ryegrass as a cover crop improves soil physical properties, especially in MT. For S use, the type of soil management (MT or NT) did not show any differences.

show abstract

Section: Resultssupporting

confidence: 90%