The new and unique solution to flexible and robust cereal disease control.
Questar™ is a new fungicide for the control of Septoria tritici, brown rust and yellow rust in winter wheat, winter triticale, winter spelt and durum wheat.
Questar is broad-spectrum fungicide containing Fenpicoxamid, more commonly known as Inatreq™ active.
Inatreq active offers a new and unique site of action for curative and persistent protection against all Septoria strains. Using Corteva’s patented i-Q4 technology, it provides near 100% leaf coverage and is highly flexible in application, delivering robust, market-leading protection so you can secure your yield and the future of your farm.
Characteristics of Inatreq active:
Questar MUST always be used in a mixture with a partner product which has a different mode of action.
Inatreq™ application advice for 2023. Click here for further information.
Questar™ must always be used in mixture with a product with a different mode of action at a dose that offers robust control.
You must not apply more than one application of Questar to any cereal crop in the same year.
Questar should be used in accordance with the instructions for use for the target disease at the specific growth rate indicated.
Product Registration Number:
50g/L Fenpicoxamid (Inatreq active) (FRAC Code 21)
Emulsifiable Concentrate (iQ-4 formulation)
Maximum Single Dose Rate:
Maximum Total Dose:
Maximum Number of Applications:
1 per crop per season
Beginning of stem elongation (GS 30)- end of flowering (GS 69)
Aquatic Buffer Zone:
Buffer zone is determined by the STRIPE Water Tool but if the ditch is dry only a 1m buffer zone is required
®™Trademarks of Corteva Agriscience and its affiliated companies. Use plant protection products safely. Always read the label and product information before use.