Soil Carbon Fractions After Ten Years of Tillage and Crop Rotation in a Haplic Plinthosol
by SIFUNDO NOVEMBER·Updated 2mo ago
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Description
A 10-year field trial initiated in 2012 evaluated the persistence of soil organic carbon fractions under different tillage, crop rotation, and residue management practices. The study, authored by Sifundo November, analyzed soil samples from the 2023/24 cropping cycle across three depth layers (0-20 cm, 20-40 cm, 40-60 cm). It found no-till increased SOC by 0.64%, which was 14.06% more than conventional tillage, and identified principal components explaining 46.47% of SOC stock variability.
Use Cases
Modeling soil organic carbon stock variability based on SOC, carbon sequestration, and humification ratio data.
Comparing the effects of no-till versus conventional tillage on carbon fractions across soil depths.
Analyzing the impact of crop rotation sequences (e.g., maize-fallow-maize) on particulate organic matter.
Evaluating the relationship between residue management and carbon-to-nitrogen ratios in different soil layers.
Assessing the long-term (10-year) persistence of conservation agriculture practices on subsoil carbon.
Strengths
Data from a 10-year field trial (initiated 2012) with a randomized complete block design.
Includes specific percentage increases (e.g., 14.06% more SOC under no-till) and ratios (e.g., C:N of 14.71 g/kg).
Measures three soil depth layers (0-20 cm, 20-40 cm, 40-60 cm) for profile analysis.
Principal component analysis identified key contributors to 46.47% of SOC stock variability.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
Geographic scope is limited to a specific soil type (Haplic Plinthosol) in an unspecified location.
Provenance
Source
Sifundo November via figshare.
Collection Method
Soil samples from a long-term field trial with a strip-split-split plot treatment structure, analyzed in the 2023/24 cropping cycle.
Time Range
Field trial from 2012, with soil sampling in 2023/24.
Freshness
Last updated 2026-04-14 10:56:28; freshness should be verified.
Geography
Likely South Africa (inferred from description context), specific to a Haplic Plinthosol soil type.