Main points:
No signs of phytotoxicity were observed during the test, and there was no lodging of plants.
The results of the BBCH 35–35 and BBCH 37–39 stages showed that all the product rates tested had a tendency to reduce plant height compared to untreated fields.
Assessments at BBCH stages 73–75 showed that all product rates tested tended to reduce internode length compared to untreated plots.
In most cases, the treated product standards increased the number of grains in the ears compared to untreated fields. In addition, in most cases, the grain quality in the treated fields was higher than in the control fields.

Overall, the yield and quality of winter wheat grains increased in all treated fields. The highest winter wheat yield and 1000-grain weight during the growing season were observed in variant 1, where the following products were used:
1. A: BBCH 28–30 – MaxSi 0.5 l/ha together with a mixture of Naturamer Culture 0.6 l/ha and Naturamer Phosphorus Glow 1.0 l/ha.
2. B: BBCH 32–33 – MaxSi 0.5 l/ha.