REX DUO k.c

Synergy against cereal and beet diseases

When an agronomist faces the need not just to treat a localized infection outbreak, but to provide comprehensive crop protection, the choice often falls on proven solutions. REX DUO by BASF is a classic example of how a combination of two active ingredients from different chemical classes covers a wide range of pathogens frequently found in wheat, barley, and sugar beet.

Why this fungicide stands out

The main advantage of the product lies in the combination of thiophanate-methyl (benzimidazoles) and epoxiconazole (triazoles). This partnership works at two levels:

• Contact Protection: Thiophanate-methyl creates a barrier on the plant surface, preventing spore germination.
• Systemic Action: Epoxiconazole quickly penetrates plant tissues, halting mycelial growth even when the disease has already started to progress.

Unlike mono-preparations, REX DUO minimizes the risk of resistance development. This is critical for farms that utilize the same fields for cereals year after year, where pathogens can quickly adapt to specialized fungicides.

Practical application aspects

The product shows high efficacy against net blotch, septoria, fusarium head blight, and powdery mildew. However, effectiveness depends on proper application. The dosage rate is 0.4–0.6 L/ha, making it an economically viable choice for intensive farming. The pre-harvest interval is 20–30 days, requiring careful planning of agronomic operations.

Strengths: Reliable control of a wide list of fungal diseases and high mobility of active substances within the plant.

Things to consider: This is a Class 2 hazard product, requiring strict adherence to safety protocols when handling plant protection products. It is optimal for those who need to manage crop protection effectively with one or two applications during critical growth stages.