Efficacy of soil solarization, Trichoderma harzianum, and coffee pulp amendment against Armillaria sp.
Hoil solarization was evaluated singly or in combination with Trichoderma harzianum infestation or coffee pulp amendment for its effect on wood-borne inoculum of an Armillaria sp. pathogenic on tea. Solarization increased maximum soil temperatures at 10 cm depth by 9-12°C and reduced viability of Armillaria sp. up to 100 percent. Its efficacy was similar at 5, 10, and 15 cm soil depths. Trichoderma harzianum applied to the soil surrounding the blocks of inoculum also significantly reduced viability of the pathogen. Application of 20 g of the wheat bran culture of the antagonist in every 1000 cm3 of soil surrounding the blocks of inoculum, following solarization for 5 week, caused total loss of Armillaria inoculum viability and was similar to 10 week of solarization without application of the antagonist. The coffee pulp amendment reduced inoculum viability slightly though this effect was apparent only in non-solarized soil.
| Main Authors: | , , , |
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| Format: | biblioteca |
| Published: |
2003
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| Subjects: | SALVADO DE TRIGO, ARMILLARIA, COFFEA ARABICA, TRICHODERMA HARZIANUM, CONTROL BIOLOGICO, AGENTES DE CONTROL BIOLOGICO, CONTROL CULTURAL, MEDIO DE CULTIVO, PLAGUICIDAS MICROBIANOS, ENFERMEDADES FUNGOSAS, INFESTACION, ENFERMEDADES DE LAS PLANTAS, ORGANISMOS PATOGENOS, SUELO, TEMPERATURA DEL SUELO, VIABILIDAD, SOLARIZACION DE SUELOS, |
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