Suppression of Phytophthora capsici in Chile Pepper Using Brassica juncea and Hordeum vulgare Cover Crop Residues and Trichoderma harzianum as a Biocontrol Agent

Phytophthora blight, caused by Phytophthora capsici, is a serious disease of many vegetable crops worldwide. In New Mexico, U.S.A., the disease affects chile pepper (Capsicum annuum L.), a major crop in the state. There is no single tool that effectively controls the disease. Continuous research is...

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Veröffentlicht in:Plant disease. - 1997. - 107(2023), 11 vom: 28. Nov., Seite 3457-3463
1. Verfasser: Mason, Makane (VerfasserIn)
Weitere Verfasser: Lehnhoff, Erik A, Trainor, Patrick J, Sanogo, Soum
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Brassica juncea Capsicum annuum Hordeum vulgare Trichoderma harzianum biofumigation integrated pest management plasticulture Soil
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520 |a Phytophthora blight, caused by Phytophthora capsici, is a serious disease of many vegetable crops worldwide. In New Mexico, U.S.A., the disease affects chile pepper (Capsicum annuum L.), a major crop in the state. There is no single tool that effectively controls the disease. Continuous research is needed in identifying combination of tools that can reduce the impact of Phytophthora blight. We explored the potential of combining cover crops and biocontrol agents to reduce soilborne diseases. This study aimed to evaluate the effects of Indian mustard (Brassica juncea L.) cover crop on the antagonistic ability of Trichoderma harzianum against P. capsici in vitro and to quantify the impacts of combining soil amendment with residues from B. juncea and barley (Hordeum vulgare L.) cover crops and plastic covering on infection of chile pepper seedlings by P. capsici under greenhouse conditions. Volatiles from macerated tissue of B. juncea significantly reduced P. capsici and T. harzianum growth in the absence of soil by 89.0 and 79.0%, respectively. When incorporated in soils, volatiles from macerated tissue of B. juncea significantly reduced P. capsici and T. harzianum by 33.4 and 7.8%, respectively. T. harzianum was more resilient to B. juncea biofumigation than P. capsici. Significant reduction in disease incidence was observed with B. juncea-fumigated soil, while no disease suppression was observed with soil incorporation of H. vulgare residues. Covering soil with plastic was necessary for increasing the efficacy of B. juncea biofumigation 
650 4 |a Journal Article 
650 4 |a Brassica juncea 
650 4 |a Capsicum annuum 
650 4 |a Hordeum vulgare 
650 4 |a Trichoderma harzianum 
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650 4 |a integrated pest management 
650 4 |a plasticulture 
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700 1 |a Lehnhoff, Erik A  |e verfasserin  |4 aut 
700 1 |a Trainor, Patrick J  |e verfasserin  |4 aut 
700 1 |a Sanogo, Soum  |e verfasserin  |4 aut 
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