Suppression of Botrytis Blight of Begonia by <i>Trichoderma hamatum</i> 382 in Peat and Compost-Amended Potting Mixes

Horst, Leona; Locke, James; Krause, C. R.; McMahon, Robert W.; Madden, L. V.; Hoitink, H. A. J.

doi:10.1094/pd-89-1195

Cited by 57 publications

(16 citation statements)

References 47 publications

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“…In contrast, all five composts assayed in our study reduced B. cinerea disease (at 14 dpi) compared to the peat growth media. The beneficial effect of using composts as growth media to reduce this disease has recently been reported in begonia plants grown in a pot mix containing 10% composted cow manure (Horst et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

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The suppressive effects of composts used as growth media against Botrytis cinerea in cucumber plants

et al. 2007

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The incidence/severity of soil-borne plant diseases is often reduced when composts are used as growth media. However, much less information is available about the effects of composts on the development of foliar diseases. Here we studied the suppressive capacity of five composts (from olive marc-cotton gin trash, grape marc, cork, spent mushroom and municipal organic and yard wastes) as growth media against Botrytis cinerea disease in cucumber plants. We also examined the putative correlations of several biotic and abiotic factors involved in disease suppression. The suppressive capacity of the growth media was studied by comparing disease incidence/severity in plants grown in composts with that occurring in plants grown in commercial peats, which are conducive to most soilborne diseases. Correlations were made between the occurrence of disease and leaf nutrient status, as well as electrical conductivity (EC) and microbial activity (measured as b-glucosidase activity) in the growth media. Cucumber plants grown in the peats showed greater severity of B. cinerea during the bioassay than those grown in composts. Mo, Ca and Si content in leaves showed negative correlations with this disease. A negative correlation with disease severity was observed for EC and microbial activity in the growth media. The noticeable reduction in B. cinerea in plants grown in composts was related to the supply of specific chemical elements, a certain degree of salt stress, and the high microbial activity of composts.

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Section: Discussionmentioning

confidence: 99%

“…syringae (Stone et al, 2003). However, the use of composts as growth media to control B. cinerea has been reported only once in a pot mix containing 10% composted cow manure and the parameters involved in disease suppression were not discussed (Horst et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

The suppressive effects of composts used as growth media against Botrytis cinerea in cucumber plants

et al. 2007

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“…Addition of conidia of T. hamatum 382 (T382) in the form of dry powder to the potting mixture to a final count of 2 x 10 5 cfu per g dry weight of the mixture, minimized the Botrytis infections on greenhouse grown begonia plants [49]. The reduction in blight severity in T382 treatment was at par to the reduction observed in plants treated with chlorothalonil at weekly intervals.…”

Section: Induced Systemic Resistancementioning

confidence: 99%

Trichoderma- Foliar Pathogen Interactions

Sawant¹

2014

TOMYCJ

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Among the group of ubiquitous soil inhabiting fungi, Trichoderma species are of considerable commercial importance due to their ability to suppress many plant pathogenic fungi. They have been widely studied and employed for management of root and seedling diseases of many crops since decades. In recent years they are also being utilized for minimising diseases of foliar plant parts, especially to supress grey mold caused due to infections of Botrytis cinerea and powdery mildews on a number of crops. They also express potential to control downy mildews and have improved the shelf life of grapes. Out of the eighty-nine species of Trichoderma, a number of species exhibit the bio-control activity. The destruction of host hyphae and protoplasm by the various lytic enzymes and toxic volatile and non-volatile compounds produced by these species are the major mechanism of bio-control; apart from deactivation of pathogen enzymes and induction of systemic resistance in host plants. However, significant differences in antagonistic potential among isolates even from the same species from the same niche is observed; and hence selection of a strain with wide host range and environment adaptability becomes a key issue for sustainable biological control.

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“…are effective biocontrol agents for a number of soil-borne plant pathogens and also known for their ability to enhance plant growth [9,10]. Recently, it was suggested that Trichoderma affects induced systemic resistance (ISR) mechanism in plants [11][12][13]. On the other hand, the incidence of several soil-borne plant pathogens has also been reduced by using composts made of different raw materials [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Integration between Compost, Trichoderma harzianum and Essential Oils for Controlling Peanut Crown Rot under Field Conditions

Abdel-Kader

Abdel-Kareem

El-Mohamady

2013

Journal of Mycology

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The effect of T. harzianum and some essential oils alone or in combination with compost on the peanut crown rot disease under field conditions was evaluated. Under laboratory conditions, results indicated that all concentrations of essential oils significantly reduced the growth of A. niger. Complete reduction was obtained with thyme and lemongrass oils at 0.5%. All T. harzianum isolates significantly reduced the growth of A. niger. The highest reduction was obtained with isolate no. 1 which reduced the growth by 81.1%. Under field conditions, results indicated that all treatments significantly reduced the peanut crown rot disease. The highest reduction was obtained with combined treatments (compost + T. harzianum + thyme and compost + T. harzianum + lemongrass) which reduced the disease incidence at both pre- and post-emergence growth stages, respectively. Similar trend corresponding to the previous treatments significantly increased the peanut yield which calculated as an increase in yield more than 75.0 and 80.0 during two growing seasons, respectively. It could be suggested that combined treatment between biocompost and essential oils might be used commercially for controlling peanut crown rot disease under field conditions.

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Suppression of Botrytis Blight of Begonia by Trichoderma hamatum 382 in Peat and Compost-Amended Potting Mixes

Cited by 57 publications

References 47 publications

The suppressive effects of composts used as growth media against Botrytis cinerea in cucumber plants

The suppressive effects of composts used as growth media against Botrytis cinerea in cucumber plants

Trichoderma- Foliar Pathogen Interactions

Integration between Compost, Trichoderma harzianum and Essential Oils for Controlling Peanut Crown Rot under Field Conditions

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