Irrigation Frequency and Volume has Little Influence on Phytophthora Root Rot in Container-grown Rhododendron

Autor: Jerry E. Weiland, Carolyn. F. Scagel, Niklaus J. Grünwald, E. Anne Davis, Bryan R. Beck, Jesse N. Mitchell
Rok vydání: 2022
Předmět:
Zdroj: Journal of Environmental Horticulture. 40:67-78
ISSN: 2573-5586
0738-2898
Popis: We evaluated whether reducing irrigation frequency and volume alters the ability of Phytophthora plurivora and P. cinnamomi to cause root rot on rhododendron grown in a noninfested potting medium or media infested with 1 or 100 propagules per gram (ppg) of pathogen. Plants were irrigated to maintain a substrate moisture of >70% container capacity (1.0X), one-half volume of 1.0X (0.5X), or two times the volume of 1.0X at each irrigation event for one week, followed by no irrigation, until soil moisture reached Species used in this study: Phytophthora species (Phytophthora cinnamomi Rands; Phytophthora plurivora T. Jung and T.I. Burgess); rhododendron, Rhododendron catawbiense Michx. ‘Album', ‘Roseum Elegans', and ‘Roseum Pink'.
Databáze: OpenAIRE