Sample Intensity and Timing for Detecting Acremonium coenophialum Incidence in Tall Fescue Pastures

Autor:	B. B. Reddick, H. A. Fribourg, R. W. Thompson
Rok vydání:	1989
Předmět:	Fescue toxicosis biology Agronomy Acremonium Incidence (epidemiology) Poaceae Elisa assay biology.organism_classification Agronomy and Crop Science Endophyte Festuca arundinacea Acremonium coenophialum
Zdroj:	Agronomy Journal. 81:966-971
ISSN:	1435-0645 0002-1962
DOI:	10.2134/agronj1989.00021962008100060024x
Popis:	Destruction of infected (E+) fescue pastures and reestablishment with endophyte free (E−) seed is beneficial for eliminating fescue toxicosis. In the first study, observed E+ incidence in two pastures increased from 15 or 30% to about 60%, respectively, during the 2-yr. Reasons for this increase are not known. The other pastures, established with 0, 45, 60 and 75% E+ seed had only small increases in E+ incidence. Significant E+ incidence could be detected in the second study at any time during the year. Six to eight samples ha −1 were adequate for characterizing A. coenophialum status. Transect and stratified random samplings gave similar E+ estimates
Databáze:	OpenAIRE
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