Formulation of mycoherbicidal strains of Fusarium oxysporum

Biomass abundant in chlamydospores obtained by liquid fermentation of mycoherbicidal strains of Fusarium oxysporum was incorporated into alginate prills with various food substrates and granular formulations such as corn flour : starch, wheat flour : kaolin, rice : wheat flour, and rice : wheat glut...

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Bibliographic Details
Published in:Weed science 1998-08, Vol.46 (4), p.501-507
Main Authors: Hebbar, K. P., Lumsden, R. D., Lewis, J. A., Poch, S. M., Bailey, B. A.
Format: Article
Language:English
Subjects:
ALGINATE
ALGINATES
ALGINATOS
APTITUD COLONIZADORA
APTITUD PARA LA CONSERVACION
APTITUDE A COLONISER
APTITUDE A LA CONSERVATION
AUXILIAIRE DE LUTTE BIOLOGIQUE
BIOLOGICAL CONTROL
BIOLOGICAL CONTROL ORGANISMS
Biomass
CHLAMYDOSPORES
COLONIZING ABILITY
CONTROL BIOLOGICO
Corn flour
DESHERBAGE
ERYTHROXYLUM
ERYTHROXYLUM COCA
ESCARDA
ESPORAS FUNGICAS
ESPORULACION
FORMULACIONES
FORMULATION
FORMULATIONS
FUNGAL SPORES
Fusarium
FUSARIUM OXYSPORUM
FUSARIUM OXYSPORUM F.SP. ERYTHROXYLI
HERBICIDAS
HERBICIDE
HERBICIDES
KEEPING QUALITY
Liquids
LUTTE BIOLOGIQUE
MICROBIAL PESTICIDES
MYCOHERBICIDES
ORGANISMOS PARA CONTROL BIOLOGICO
PAPAVER SOMNIFERUM
PESTICIDE MICROBIEN
PLAGUICIDAS MICROBIANOS
RACINE
RAICES
RHIZOSPHERE
Rice
RIZOSFERA
ROOTS
Shelf life
Special Topics
SPORE FONGIQUE
SPORULATION
Starches
STORAGE LIFE
VIABILIDAD
VIABILITE
VIABILITY
WEED CONTROL
Wheat flour
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Summary:Biomass abundant in chlamydospores obtained by liquid fermentation of mycoherbicidal strains of Fusarium oxysporum was incorporated into alginate prills with various food substrates and granular formulations such as corn flour : starch, wheat flour : kaolin, rice : wheat flour, and rice : wheat gluten formulations. These fungal strains cause vascular wilts in coca (Erythroxylum coca var. coca) and in poppy (Papavar somniferum). Fungal strain, formulation method, and interaction of these two parameters significantly affected the shelf life of the formulations at room temperature as well as the ability to form secondary propagules on 1% water agar. In bioassays, there were no significant differences among F. oxysporum strain EN4-S formulations in their ability to colonize root tissue or the rhizosphere of E. coca seedlings. The study indicates that most of the formulations meet at least three of the four criteria important for biological control agents to be effective: low losses in viability during the formulation process, satisfactory shelf life at room temperature, abundant secondary chlamydospore formation, and rhizosphere colonization.
ISSN:0043-1745
1550-2759
DOI:10.1017/S0043174500090962