Preparation of an entomopathogenic fungal insect control agent
First Claim
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1. A process for preparing dried mycelia for use as an insect control agent comprising culturing mycelia in a suitable medium, harvesting growing mycelia, treating said mycelia with a chemical protectant to prevent excessive loss of viability during storage, incubating the treated mycelia for about four to five hours at about 22°
- to 26°
C. and about 20 to 40% relative humidity, drying the incubated mycelia at about 4°
C. with rapid air circulation for about 18 hours, drying further the partially dried mycelia at ambient room temperature of about 20°
to 26°
C. with rapid air flow for about four to six hours and then grinding and storing the dried mycelia.
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Abstract
Entomopathogenic fungi useful in the control of insects is prepared by culturing mycelia in a suitable medium, harvesting the growing mycelia, treating the mycelia with a protective agent, drying the treated mycelia and grinding and storing the dried product.
38 Citations
8 Claims
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1. A process for preparing dried mycelia for use as an insect control agent comprising culturing mycelia in a suitable medium, harvesting growing mycelia, treating said mycelia with a chemical protectant to prevent excessive loss of viability during storage, incubating the treated mycelia for about four to five hours at about 22°
- to 26°
C. and about 20 to 40% relative humidity, drying the incubated mycelia at about 4°
C. with rapid air circulation for about 18 hours, drying further the partially dried mycelia at ambient room temperature of about 20°
to 26°
C. with rapid air flow for about four to six hours and then grinding and storing the dried mycelia. - View Dependent Claims (6)
- to 26°
-
2. A process for preparing dried mycelia for use as an insect control agent comprising culturing mycelia in a suitable fermentation medium, harvesting the mycelia while it is in active growth phase by filtering the fermentation medium on a suitable mesh screen to obtain thin mycelial mats, treating the mats with a 10% w/v aqueous solution of maltose, glucose or similar agent to saturation, incubating the treated mats for about four to five hours at about 22°
- to 26°
C. and about 20 to 40% relative humidity, drying the incubated mycelial mats at about 4°
C. and a relative humidity of about 95 to 100% with rapid air circulation for about 18 hours, drying further the partially dried mats at ambient room temperature of about 20°
to 26°
C. with rapid air flow for about four to six hours at a drying rate of about 60 g/ft2 /hr and grinding the mycelia to a powder. - View Dependent Claims (3, 4)
- to 26°
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5. A method of controlling insect populations on plants comprising growing a culture of a fungus of the order Entomophtorales on a suitable fermentation medium, filtering the medium while the fungi are actively growing to obtain a thin mycelial mat, treating the mycelial mat by spraying it to saturation with a chemical protectant to prevent excessive loss of viability during storage, incubating the treated mat for about four to five hours at about 22°
- to 26°
C. and about 20 to 40% relative humidity, drying the incubated mycelial mat at about 4°
C. with rapid air circulation for about 18 hours, drying further the partially dried mycelia at ambient room temperature of about 20°
to 26°
C. with rapid air flow for about four to six hours, grinding the dried mycelial mat to a powder, formulating the dried mycelia as a wettable powder and spraying the wettable powder on plants.
- to 26°
-
7. Mycelia in stable, dry, powdered form, said mycelia having been prepared by culturing mycelia in a suitable medium, harvesting growing mycelia, treating said mycelia with a chemical protectant to prevent excessive loss of viability during storage, incubating the treated mycelia for about four to five hours at about 22°
- to 26°
C. and about 20 to 40% relative humidity, drying the incubated mycelia at about 4°
C. with rapid air circulation for about 18 hours, drying further the partially dried mycelia at ambient room temperature of about 20°
to 26°
C. with rapid air flow for about four to six hours and grinding the dried mycelia, said mycelia being wettable and useful as an insect control agent. - View Dependent Claims (8)
- to 26°
Specification