Administrative Report Or Publication
 

Perennial ryegrass grown for seed (western Oregon) [2005]

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https://ir.library.oregonstate.edu/concern/administrative_report_or_publications/zp38wd13s

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  • Perennial ryegrass is grown for turf or forage seed on a broad range of soils in western Oregon. All perennial ryegrass varieties are similar in their nutrient requirements. Typical seed yield is between 1,400 and 1,800 lb/acre. Higher seed yields (up to 2,500 lb/acre) may be produced on better soils, but higher yields do not require additional nutrients. Plant growth regulators often are used to increase perennial ryegrass yields, but they do not increase the need for nitrogen, phosphorus, potassium, or sulfur fertilizer. Appropriate management practices from seedbed preparation to harvest must be performed in a timely manner for optimum yield. Low soil pH, poor drainage, insects, diseases, and weeds all reduce seed yield. Increasing fertilizer rates when nutrients already are in adequate supply will not compensate for other limiting factors.
  • Revised August 2005. Replaced by EM 9086. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
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