On-Farm Crop Yield Response to Lime Application Rates in Ethiopia

80 Ethiopian farms participated in a two-year randomized trial measuring maize, wheat, faba bean, and soybean yields under four lime application rates. The dataset contains plot-level yield measurements for the first and second years after lime application, capturing both direct and residual effects. It was generated by the GAIA project and authored by Tesfaye Shiferaw SIDA from CIMMYT.

Use Cases

• Modeling crop yield response functions based on lime application rates.
• Evaluating the residual effects of a single lime application on crop performance over two seasons.
• Analyzing the economic viability of lime use for different crops based on yield data.
• Linking plot-level agronomic data with predicted soil properties using the provided soil sample identifier.

Strengths

• Data from 80 on-farm replications provides realistic field-scale variability.
• Two years of yield measurements allow analysis of both immediate and residual lime effects.
• Includes four major crops (maize, wheat, faba bean, soybean) for comparative analysis.
• Designed for interoperability with external soil datasets and a provided agronomic terminology lookup table.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the specific trial locations in Ethiopia.

Provenance

Source

CIMMYT Harvested Dataverse

Collection Method

Researcher-managed on-farm trials following a randomized complete block design.

Time Range

Two years after trial establishment (Year 1 and Year 2).

Freshness

Last updated 2026-04-20 14:54:03; freshness should be verified.

Geography

Ethiopia