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| Titel: |
Production of Metarhizium anisopliae spores using nutrient-impregnated membranes and its economic analysis |
| Auteur: |
Bailey, L. A. Rath, A. C. |
| Verschenen in: |
Biocontrol science and technology |
| Paginering: | Jaargang 4 (1994) nr. 3 pagina's 297-307 |
| Jaar: |
1994 |
| Inhoud: |
Metarhizium anisopliae spores were produced on nutrient-impregnated membranes (NIMs). The NIM system involved wetting the membrane with a spore and nutrient suspension, followed by harvesting the spores produced after incubation. The cost efficiency of spore production was assessed for a range of nutrient sources and membrane types. Skim milk powder (20 g l-1) was found to be the most cost-effective nutrient source of the nine nutrients examined. Yield was 5.7 × 106 spores/cm2 after 28 days incubation on a paper membrane. Supplementation of the skim milk with either sucrose (2 g l-1) or dextrose + KNO3 maximized yield. Superwipe, an absorbent fibrous material, was the most efficient of 16 membranes tested which ranged from fibreglass mesh to paper and cloth. A series of small pilot plants were built, but the cost efficiency of spore production decreased as the size of the membrane increased from 24 × 24 cm to 270 ×15cm and up to 100 ×80cm. Yield on the two smaller pilot plants was over 107spores/cm2, but the cost (nutrient and membrane only) of producing 1013 spores (standard dose required per hectare) was around $A37 and was found not to be competitive with spore production on grain. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 15 gevonden artikelen
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