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 wheat, durum wheat, rye, triticale, and spelt.
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 protection so you can secure your yield and the future of your farm.
Characteristics of Inatreq active:
Latest Inatreq active statement and technical statement here.
Questar™ must always be used in mixture with a product with a different mode of action at a dose that offers robust control.
Do not apply more than one application of any product containing Inatreq (fenpicoxamid) 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)
5 litres and 7.5 litres
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:
Boom sprayer must be fitted with three star drift reduction technology for 30m from the top of any surface water bodies. If the ditch contains water an unsprayed buffer zone of 12m must be observed, if dry this is reduced to 1m.
®™Trademarks of Corteva Agriscience and its affiliated companies. Use plant protection products safely. Always read the label and product information before use.