Timing Proxy applications

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Poa seedhead management with Proxy (ethephon) plus Primo (trinexepac-ethyl) combinations is well documented, as demonstrated in this research report . However, good results occur only when these products are applied at the right time. Spray too early, and you waste your money and time. But spray too late, and the products have much less efficacy.

Ideally, your first application should be made just before poa seedheads appear. But identifying an invisible plant part just isn't…