FIPRONIL: A NEW SOIL AND FOLIAR INSECTICIDE FOR COTTON
Mar 13, 2017

Crop Protection Croprotection-NorthAmerica
Abstract                                                                         Back to Table of contents

Fipronil [(+)-5-amino-1-(2,6-dichloro-a,a,a-trifluoro-p-toly)-4-tri-fluoromethylsulfinylpyrazole-3-carbonitrile] is a new pyrazole insecticide that provides excellent control of many foliar insects on cotton.  Fipronil at 100 g a.i./ha applied in-furrow at planting to the soil effectively controls thrips, Frankliniella spp.  Fipronil applied at 50-65 g a.i./ha to foliage controls boll weevil, Anthonomus grandis grandis.

Conclusions

Field trials conducted between 1989 and 1993 demonstrated that fipronil is very effective at low use rates on economically important cotton pests:  thrips and boll weevil.  Fipronil, a phenyl pyrazole, represents a new class of chemistry, with a unique mode of action.  The product can effectively control thrips as a preventive spray applied in-furrow or as a curative treatment applied as a foliar spray for thrips and boll weevil.  Fipronil use to control the above mentioned insects during early season would slow insecticide resistance development to the organophosphate class of insecticides, which have been the primary products used as foliar sprays to control early season insect pests.

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