Background Information

Since 2018, 56 spring wheat PGR trials have been conducted and harvest data collected.
Two PGRs, Moddus and Manipulator, were utilized in this trial. Manipulator was applied on 47 sites and Moddus on eight sites. An alternative product was also applied to one site.
Site seeding rates ranged from 90 – 170 lb/ac. All utilized varieties had a lodging rating of good or better.

Summary

There was only a statistically significant positive yield response to PGR application at nine (or 16 per cent) of sites. Eight of those sites were sprayed with Manipulator, while one was sprayed with a Kinetin PGR. There was a significantly negative yield response to a PGR application at one site. At the sites with a positive yield response, yields increased on average 3.17 bu/ac. At all sites where a positive significant yield difference was found, the application of a PGR improved returns between $1.43 and $31/ ac, when accounting for product cost only. At sites where no significant yield increases were observed, there was a $17.30/ac loss, when accounting for product cost only.

Superscript letters indicate significant differences