84 research outputs found
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Using seed moisture as a harvest management tool
Seed moisture content is the most reliable indicator of seed maturity and harvest timing in grass seed crops. There are two significant times during harvest that knowledge of seed moisture is critical: at swathing and at combining. Swathing within the correct range of seed moisture content will maximize seed yield and minimize seed losses during harvest. Taking an accurate measurement of seed moisture content is a key component of economic grass seed crop management. This publication covers these two topics relating to seed moisture: (1) The Role of Seed Moisture in Grass Seed Harvest Systems. (2) How to Accurately Measure Seed Moisture on the Farm.Published January 2011. Reviewed April 2014. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalogKeywords: seed moisture, harvest management, swathing, grass see
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Perennial ryegrass grown for seed (western Oregon) [2005]
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/catalo
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2011 Seed production research at Oregon State University, USDA-ARS cooperating
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2010 Seed production research at Oregon State University, USDA-ARS cooperating
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