Proxy and warm weather
March 26, 2007
Applications of Proxy (ethephon) or Proxy plus Primo usually provide good to excellent control of Poa seedheads. However, every once in a while, we hear of a case where control was less than the typical 75% - 95%. These cases usually coincide with spurts of hot weather (maximum air temperatures over 80F, or 27C).
The bulk of what we know about hot weather and decreased Proxy performance comes from descriptions and anecdotes from superintendents. While these are highly valuable, we…