Single application prophylaxis against gray mold in pot rose and pelargonium with Ulocladium atrum

D S Yohalem; K Paaske; K Kristensen; J Larsen

doi:10.1016/j.biocontrol.2007.01.007

Single application prophylaxis against gray mold in pot rose and pelargonium with Ulocladium atrum

D S Yohalem
, K Paaske
, K Kristensen
, J Larsen

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

3 Citationer (Scopus)

Abstract

Experiments were conducted to clarify the optimal dose and timing of single applications of Ulocladium atrum for control of gray mold on pot rose and pelargonium under conditions similar to those found in commercial greenhouses. In general, application of the antagonist 1-d prior to infestation with conidia of Botrytis cinerea was more effective than application after the infection period. For pot rose, the minimum effective dose when compared to the fungicide fenhexamid was 10⁶ conidia ml^-1 and persisted for up to 21-d in direct comparison to the fungicide. The effect of pre-emptive application of the antagonist, while significant, was smaller and persisted for a shorter time on pelargonium; when compared to the fungicide, U. atrum was ineffective; however, high application rates and pre-emptive application were more effective than lower application rates or application subsequent to the infection

Originalsprog	Engelsk
Tidsskrift	Biological Control
Vol/bind	41
Nummer	1
Sider (fra-til)	94-98
Antal sider	5
ISSN	1049-9644
DOI	https://doi.org/10.1016/j.biocontrol.2007.01.007
Status	Udgivet - 2007

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@article{eeaf116083a711dc9264000ea68e967b,

title = "Single application prophylaxis against gray mold in pot rose and pelargonium with Ulocladium atrum",

abstract = "Experiments were conducted to clarify the optimal dose and timing of single applications of Ulocladium atrum for control of gray mold on pot rose and pelargonium under conditions similar to those found in commercial greenhouses. In general, application of the antagonist 1-d prior to infestation with conidia of Botrytis cinerea was more effective than application after the infection period. For pot rose, the minimum effective dose when compared to the fungicide fenhexamid was 106 conidia ml-1 and persisted for up to 21-d in direct comparison to the fungicide. The effect of pre-emptive application of the antagonist, while significant, was smaller and persisted for a shorter time on pelargonium; when compared to the fungicide, U. atrum was ineffective; however, high application rates and pre-emptive application were more effective than lower application rates or application subsequent to the infection",

keywords = "Botrytis cinerea, Botryotinia, Ulocladium atrum, Rosa hybrida, Pelargonium zonale, Gray mold, Teldor, Competitive saprophytic colonization, Geranium",

author = "Yohalem, \{D S\} and K Paaske and K Kristensen and J Larsen",

year = "2007",

doi = "10.1016/j.biocontrol.2007.01.007",

language = "English",

volume = "41",

pages = "94--98",

journal = "Biological Control",

issn = "1049-9644",

publisher = "Academic Press Inc.",

number = "1",

}

TY - JOUR

T1 - Single application prophylaxis against gray mold in pot rose and pelargonium with Ulocladium atrum

AU - Yohalem, D S

AU - Paaske, K

AU - Kristensen, K

AU - Larsen, J

PY - 2007

Y1 - 2007

N2 - Experiments were conducted to clarify the optimal dose and timing of single applications of Ulocladium atrum for control of gray mold on pot rose and pelargonium under conditions similar to those found in commercial greenhouses. In general, application of the antagonist 1-d prior to infestation with conidia of Botrytis cinerea was more effective than application after the infection period. For pot rose, the minimum effective dose when compared to the fungicide fenhexamid was 106 conidia ml-1 and persisted for up to 21-d in direct comparison to the fungicide. The effect of pre-emptive application of the antagonist, while significant, was smaller and persisted for a shorter time on pelargonium; when compared to the fungicide, U. atrum was ineffective; however, high application rates and pre-emptive application were more effective than lower application rates or application subsequent to the infection

AB - Experiments were conducted to clarify the optimal dose and timing of single applications of Ulocladium atrum for control of gray mold on pot rose and pelargonium under conditions similar to those found in commercial greenhouses. In general, application of the antagonist 1-d prior to infestation with conidia of Botrytis cinerea was more effective than application after the infection period. For pot rose, the minimum effective dose when compared to the fungicide fenhexamid was 106 conidia ml-1 and persisted for up to 21-d in direct comparison to the fungicide. The effect of pre-emptive application of the antagonist, while significant, was smaller and persisted for a shorter time on pelargonium; when compared to the fungicide, U. atrum was ineffective; however, high application rates and pre-emptive application were more effective than lower application rates or application subsequent to the infection

KW - Botrytis cinerea

KW - Botryotinia

KW - Ulocladium atrum

KW - Rosa hybrida

KW - Pelargonium zonale

KW - Gray mold

KW - Teldor

KW - Competitive saprophytic colonization

KW - Geranium

U2 - 10.1016/j.biocontrol.2007.01.007

DO - 10.1016/j.biocontrol.2007.01.007

M3 - Journal article

SN - 1049-9644

VL - 41

SP - 94

EP - 98

JO - Biological Control

JF - Biological Control

IS - 1

ER -

Single application prophylaxis against gray mold in pot rose and pelargonium with Ulocladium atrum

Abstract

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