Suppressing poa with low phosphorus

Turf managers have been reporting success with suppressing poa invasion through the use of a low phosphorus strategy. We have proposed a mechanism for how this might work, and also have data supporting this low phosphorus approach.

That said, just how low can you go in your phosphorus applications before you start to adversely affect the health of the bentgrass? As most of you know, phosphorus deficiencies can produce weak turf; one of the first signs that P levels are…