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| Titel: |
Efficacy of Trematophoma lignicola Petrak as a Biological Control Agent for Amaranthus retroflexus L. |
| Auteur: |
Lawrie, J. Agallou, E. Greaves, M. P. Down, V. M. |
| Verschenen in: |
Biocontrol science and technology |
| Paginering: | Jaargang 11 (2001) nr. 5 pagina's 583-595 |
| Jaar: |
2001-10-01 |
| Inhoud: |
The pathogenicity of Trematophoma lignicola on Amaranthus retroflexus was increased when its conidia were formulated in oilseed rape emulsion. However, this formulation did not reduce the dew period required to allow conidial germination and infection of the host, nor did it protect the conidia from desiccation before the onset of dew. The fungus gave effective control of A. retroflexus plants up to the 4-true-leaf stage. Plants with 5 to 6-true-leaves were infected and their dry weight reduced, but plants with more than 6-true-leaves were unaffected. Plants grown in warm conditions (18-21°C/12-15°C, day/night) were more likely to be successfully controlled than those grown in the cold (10-12°C/7-8°C; day/night). Significant dry weight loss of A. retroflexus plants were achieved at application volumes down to 100 l ha -1 at 5 ×10 6 conidia ml -1 . More effective control was achieved by application of conidia of T. lignicola than mycelial or pycnidial applications. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 9 gevonden artikelen
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