Genetic and environmental variation in alfalfa forage quality from variety testing experiments conducted in North America between 1986 and 1999

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By Daniel Wiersma1, Wayne G. Hartman, Stanislav Pejša2, Sylvie Brouder3, Jeffrey Volenec3

1. Corteva Agriscience, Johnston, IA 2. Purdue Libraries 3. Department of Agronomy, Purdue University

The dataset contains data used to analyze genetic and environmental effects on alfalfa forage quality and corresponding forage yield. Data were compiled from variety tests conducted by University researchers in the US and Canada from 1986 through...

Additional materials available

Version 1.0 - published on 15 Jun 2020 doi:10.4231/02PR-9H36 - cite this Archived on 24 Jul 2020

Licensed under CC0 1.0 Universal



The dataset contains forage quality data from alfalfa variety tests conducted by researchers in the US from 1986 through 1999. All trials measured forage yield, while a subset also measured stand persistence; these data are also available in PURR. The data were aggregated from the Alfalfa Variety Performance Database originally compiled in 2000 by Daniel W. Wiersma and Wayne G. Hartman (doi: 10.4231/PHKH-4334). The database was used to analyze long-term trends in genetic improvement of alfalfa yield, quality, and agronomic performance.

The forage quality file contains cultivar- and harvest-specific forage quality and corresponding yield data. It is organized by Trial, and includes trial-specific spatial (state, latitude, longitude, elevation), and temporal (year of trial, harvest number, harvest date, planting date) details. Finally, when available soil type and statistics are also provided. A companion dataset contains the characteristics of these alfalfa varieties (doi: 10.4231/FMY9-6966).

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