Texas Bluegrass Responses to Seeding Rate and Fertilization

Autor:	W. D. Pitman, J. C. Read
Rok vydání:	2007
Předmět:	geography geography.geographical_feature_category biology Physiology Soil acidification food and beverages Sowing biology.organism_classification Pasture Human fertilization Poa arachnifera Agronomy Soil pH Seeding Agronomy and Crop Science Plant nutrition
Zdroj:	Journal of Plant Nutrition. 30:309-319
ISSN:	1532-4087 0190-4167
DOI:	10.1080/01904160601118190
Popis:	Texas bluegrass has potential as a cool-season perennial pasture grass for the south-central USA. Slow stand establishment in competitive environments is a limitation. Forage production of this grass increases with nitrogen (N), and rhizome growth increases with phosphorus (P). Stand responses by Texas bluegrass from three seed sources to seeding rate and a complete mixed fertilizer were assessed from 1997 through 2005 on a Louisiana Coastal Plain site. A linear response (R2 = 0.39, P ≤ 0.0001) to seeding rate in March 1998 persisted through 2005, even though stands at all seeding rates improved over time. Stands did not differ (P > 0.05) among seed sources. At only the higher seeding rates, rhizome mass increased with fertilization. Soil pH decreased with fertilization, and pH was positively correlated with the final stand rating in 2005. Direct stand responses to fertilization were not detected. Lack of competitive advantage, despite growth responses, and soil acidification with fertilization i...
Databáze:	OpenAIRE
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