Phytoseiid predatory mite releasing system and method for production
AssigneeKoppert B.V.
InventorsKarel Jozef Florent Bolckmans, Yvonne Maria Van Houten, Adelmar Emmanuel Van Baal, Arno Theodoor Stam
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Abstract
The present invention in general relates to the field of biological crop protection by use of phytoseiid predatory mites. More particularly the present invention relates to a system for releasing a phytoseiid predatory mite in a crop and novel uses of host mites in such phytoseiid predatory mite releasing system. The phytoseiid predatory mite releasing system according to the invention and the uses according to the invention are characterised by the selection a host mite species having an intrinsic growth rate (rm) of <0.28.
Claims22
A phytoseiid predatory mite releasing system comprising:
- a population of the phytoseiid predatory mite;
- a food source for the individuals of the phytoseiid predatory mite population, comprising a population of a host mite;
- a carrier comprising a food source for the host mite;
- wherein a mite species having an intrinsic growth rate (rm) of <0.28 is selected as the host mite.
A method of for manufacturing a phytoseiid predatory mite releasing system, the method comprising:
- using a host mite having an growth (rm) of <0.28 wherein phytoseiid predatory mite releasing system comprises:
- a population of the phytoseiid predatory mite;
- a food source for the individuals of the phytoseiid predatory mite population;
- a carrier comprising a food source for the host mite;
- said phytoseiid predatory mite releasing system having phytoseiid predatory mite releasing activity of at least 7 weeks and/or a cumulative production of phytoseiid predators of at least 400/gram carrier.
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A method for producing a phytoseiid predatory mite releasing system comprising:
- (A) selecting a phytoseiid predatory mite;
- (B) rearing the phytoseiid predatory mite in a rearing composition comprising:
- a population of the phytoseiid predatory mite;
- a population of a rearing host mite;
- a food source for the rearing host mite;
- (C) optionally, adding a population of an additional host mite to the rearing composition;
- (D) providing a container suitable to hold the phytoseiid predatory mite, said container having an exit for mobile stages of the phytoseiid predatory mite;
- (E) packing the rearing composition, optionally together with the additional host in the container;
- wherein for the rearing host and/or for the optional additional host, a host mite having an intrinsic growth rate (rm) of <0.28 is selected.
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Dependencies are inferred from the claim text.