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Pyridanil (Sumitomo / Valent). USDA- funded field trials for new pesticide.

Also known as Pyridalyl (CAS No. 179101-81-6)

From: http://www.pjbpubs.co.uk/agroproj/demo/PestDemo/pestprofile.htm

(downloaded August 2001)

S-1812

 

PRODUCT SUMMARY:
S-1812 is a dihalopropene insecticide in development at Sumitomo. Field trials in the US indicate that S-1812 provides commercial levels of control of lepidopteran larvae in cotton. Sumitomo report the main crop targets are cotton and fruiting and leafy vegetables. The 4EC and 35WP formulations have been used in field trials reported by the Extension Services in the US.

The IR-4 Project (USDA-funded minor crops registration project) has identified the following crops as potential targets for S1812; eggplant (aubergine), groundcherry, ornamentals, pepino, pepper, tomato, tomatillo. Valent USA will be responsible for the development in the US although the expected date for approval in US is not known. S-1812 is in official trials in Japan. Sumitomo are considering development in the EU.

STRUCTURE:

 

CHEMICAL NAMES:
IUPAC:
2-[3-[2,6-dichloro-4-[(3,3-dichloroallyl)oxy]phenoxy]propoxy]-5-(trifluoromethyl)pyridine

CAS:
2-[3-[2,6-dichloro-4-[(3,3-dichloro-2-propenyl)oxy]phenoxy]propoxy]-5-(trifluoromethyl)pyridine

 

 

 

ENVIRONMENTAL PROFILE:
S1812 is reported to be safe to beneficials.

 

FORMULATIONS:

 

PRIMARY TARGETS:
Helicoverpa zea, Heliothis virescens, Heliothis armigera, Plutella xylostella, Pieris rapae

 

CROP USES:
Cotton, eggplant (aubergine), tomato, tomatillo, pepino, pepper, ornamentals, groundcherry, fruiting and leafy vegetables.

 

APPLICATION RATES:
56-112g ai/ha

 

ACTIVITY SUMMARY:
Reports of field and laboratory trials conducted in 1998-1999 by the Extension Services in Mississippi and Florida and the USDA Agricultural Research Service show that foliar applications of S1812 to cotton demonstrated good control of Heliothis spp larvae including cotton bollworm and that the efficacy was equivalent to that shown by the commercial standards, Bacillus thuringiensis (Steward) or spinosad (Tracer).

Combinations of S1812 and lambda-cyhalothrin (Karate) were also effective for the control of lepidopteran larvae. S1812 provided good residual activity in these trials. Patent information reporting findings of synergy in mixtures suggests that S-1812 combinations with pyrethroids and organophospates are of future development potential. The patents also suggest that combinations of pyrethroids and S1812 can provide effective control of Heliothis armigera resistant to synthetic pyrethroid products.

Laboratory studies with residual assays show that S1812 provides good to excellent selectivity to beneficial species such as green lacewings and big-eyed bugs. Some toxic effects were observed on flower bugs (Orius insidiosus) and Trichogramma pretiosum. However, the toxicity of S1812 in the test reported was less than that of spinosad and suggests that S1812 has potential for use in IPM programs.

 

FIELD TRIAL DATA:
Pepper
PA Stansly, JM Conner & MA Pomerinke, University of Florida, 1998

Eggplant
PA Stansly, JM Conner & MA Pomerinke, University of Florida, 1998

Tomato
PA Stansly, JM Conner & MA Pomerinke, University of Florida, 1998

Cotton
JT Reed & CS Jackson, N. Mississippi Research & Extension Centre, 1999

 

LITERATURE REFS:
Arthropod Management Tests (Entomological Society of America), 1999, 24
Patent; CN 1238125 (15.12.99) Pesticide Composition with synergistic activity
Patent; JP 2000169305 (20.6.00) Insecticide/acaricide composition containing 3,5-dichloro-1-(3,3-dichloro-2-propenyloxy)-4-(3-(5-trifluoromethylpyridin-2-yloxy)propyloxy)benzene
Patent; US 5530015 Dihaloprene compounds, insecticidal/acaricidal compositions containing them and intermediate compounds for their preparation.
Patent; US 5698702 Intermediate compounds for use in the production of dihaloprene compounds.

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