Here’s a new article from our seed production research and extension team on frequency and seasonal timing of irrigation and its effects on seed yield and yield components in perennial ryegrass (Lolium perenne L.) seed crops.  Field trials were conducted in the Willamette Valley over a 5-year period at OSU’s Hyslop Farm.

Irrigation system (TG Chastain photo)
Irrigation system (TG Chastain photo)

This article will appear in an upcoming issue of Field Crops Research.

Key findings of the article:

• Spring irrigation increased seed yield of perennial ryegrass but fall irrigation did not.
• Most perennial ryegrass cultivars tested responded to spring irrigation with increased seed yield.
• Seed yield increases attributable to spring irrigation resulted from increased seed number and seed weight.
• Seed yield was not substantially affected by the expression of other seed yield components.

The article can be found at the link below:

Chastain, T.G., C.M. King, W.C. Young III, C.J. Garbacik, and D.J. Wysocki. 2015. Irrigation frequency and seasonal timing effects on perennial ryegrass (Lolium perenne) seed production. Field Crops Research 180:126-134.


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