jar method

Knowledge graph centered on jar method with 73 nodes and 150 connections. Top connected: Rocky Mountain Biological Laboratory, Gothic, Crested Butte, East River, Heterogeneity in Hyporheic Flow, Pore Water Chemis.

Method synopsis

Standardized wet sieving method using Yoder device to determine soil aggregate size distributions. Measures water-stable aggregates across multiple size classes to assess soil structure.

Synthesized from method descriptions across 5 papers using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Soil signals of key mechanisms driving greater protection of organic carbon under aspen compared to spruce forests in a North American montane ecosystem (2025), Biogeosciences. Implementations in other papers (listed below) may differ.

1. Aggregate size distribution analysis
   Around 25 g of largest air-dried aggregates fully saturated with Dickson apparatus, placed on Yoder device with sieves (#4, 10, 17, 70), raised and lowered in water 2.8 cm per stroke at 36 strokes per minute for 10 min. Soil material remaining on each sieve dispersed with 200 mL of 2 g L⁻¹ HMP, mixed for 10 min, passed through sieve again, dried at 105°C for 12 h.
   Quantities: 25 g aggregate samples, 200 mL of 2 g L⁻¹ HMP solution, 4 sieve sizesDuration: 10 min agitation, 10 min mixing, 12 h drying at 105°CConditions: Laboratory conditions, 36 strokes per minute agitation, 105°C drying
   Equipment: Dickson apparatus, Yoder device, sieves (#4, 10, 17, 70), 2 g L⁻¹ HMP solution, drying oven

Typical Equipment

• Dickson apparatus
• Yoder device
• sieves (#4, 10, 17, 70)
• 2 g L⁻¹ HMP solution

Output Measurements

• aggregate size distribution
• geometric mean diameter
• fine aggregate fraction

Papers Using This Protocol (5)

Species Studied With This Protocol

Places Where Used